10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Quarterly Period Ended September 30, 2023

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Transition Period from             to             

Commission File No. 1-11778

CHUBB LIMITED

(Exact name of registrant as specified in its charter)

Switzerland	98-0091805
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

Baerengasse 32
Zurich, Switzerland CH-8001
(Address of principal executive offices) (Zip Code)

+41 (0)43 456 76 00

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:
Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Shares, par value CHF 0.50 per share	CB	New York Stock Exchange
Guarantee of Chubb INA Holdings Inc. 0.30% Senior Notes due 2024	CB/24A	New York Stock Exchange
Guarantee of Chubb INA Holdings Inc. 0.875% Senior Notes due 2027	CB/27	New York Stock Exchange
Guarantee of Chubb INA Holdings Inc. 1.55% Senior Notes due 2028	CB/28	New York Stock Exchange
Guarantee of Chubb INA Holdings Inc. 0.875% Senior Notes due 2029	CB/29A	New York Stock Exchange
Guarantee of Chubb INA Holdings Inc. 1.40% Senior Notes due 2031	CB/31	New York Stock Exchange
Guarantee of Chubb INA Holdings Inc. 2.50% Senior Notes due 2038	CB/38A	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes  ☑                                                 No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

Yes  ☑                                                 No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☑	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes  ☐                                               No  ☑

The number of registrant’s Common Shares (CHF 0.50 par value) outstanding as of October 11, 2023 was 407,989,898.

CHUBB LIMITED

INDEX TO FORM 10-Q

Part I.	FINANCIAL INFORMATION		Page
Item 1.	Financial Statements:
	Consolidated Balance Sheets (Unaudited) September 30, 2023 and December 31, 2022		3
	Consolidated Statements of Operations and Comprehensive Income (Unaudited) Three and Nine Months Ended September 30, 2023 and 2022		4
	Consolidated Statements of Shareholders' Equity (Unaudited) Three and Nine Months Ended September 30, 2023 and 2022		5
	Consolidated Statements of Cash Flows (Unaudited) Nine Months Ended September 30, 2023 and 2022		6
	Notes to Consolidated Financial Statements (Unaudited)
	Note 1.	General and significant accounting policies	7
	Note 2.	Acquisitions	12
	Note 3.	Investments	16
	Note 4.	Fair value measurements	22
	Note 5.	Reinsurance	30
	Note 6.	Deferred acquisition costs	30
	Note 7.	Goodwill, Value of business acquired, and Other intangible assets	32
	Note 8.	Unpaid losses and loss expenses	34
	Note 9.	Future policy benefits	37
	Note 10.	Policyholders' account balances	41
	Note 11.	Market risk benefits	44
	Note 12.	Separate accounts	45
	Note 13.	Commitments, contingencies, and guarantees	46
	Note 14.	Shareholders' equity	52
	Note 15.	Share-based compensation	55
	Note 16.	Postretirement benefits	56
	Note 17.	Other income and expense	58
	Note 18.	Segment information	58
	Note 19.	Earnings per share	61
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		63
Item 3.	Quantitative and Qualitative Disclosures About Market Risk		102
Item 4.	Controls and Procedures		105
Part II.	OTHER INFORMATION
Item 1.	Legal Proceedings		106
Item 1A.	Risk Factors		106
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds and Issuer Repurchases of Equity Securities		107
Item 5.	Other Information		108
Item 6.	Exhibits		109

2

PART I FINANCIAL INFORMATION

ITEM 1. Financial Statements

CONSOLIDATED BALANCE SHEETS (Unaudited)

Chubb Limited and Subsidiaries                                

	September 30, 2023		December 31, 2022
(in millions of U.S. dollars, except share and per share data)			As Adjusted
Assets
Investments
Short-term investments, at fair value (amortized cost – $5,455 and $4,962)	$	5,454	$	4,960
Fixed maturities available for sale, at fair value, net of valuation allowance - $158 and $169     (amortized cost – $109,355 and $93,355)	99,766		85,220
Fixed maturities held to maturity, at amortized cost, net of valuation allowance - nil and $34     (fair value – nil and $8,439)	—		8,848
Private debt held-for-investment, at amortized cost	2,401		—
Equity securities, at fair value	3,395		827
Private equities	13,362		12,355
Other investments	5,583		1,341
Total investments (refer to Note 3 for balances associated with variable interest entities (VIEs))	129,961		113,551
Cash, including restricted cash $192 and $115 (refer to Note 3 for balances associated with VIEs)	2,778		2,127
Securities lending collateral	1,469		1,523
Accrued investment income	1,040		941
Insurance and reinsurance balances receivable, net of valuation allowance - $53 and $52	13,907		11,933
Reinsurance recoverable on losses and loss expenses, net of valuation allowance - $370 and $351	19,750		18,859
Reinsurance recoverable on policy benefits	315		302
Deferred policy acquisition costs	6,856		6,031
Value of business acquired	3,675		3,702
Goodwill	19,554		16,228
Other intangible assets	6,844		5,441
Prepaid reinsurance premiums	3,514		3,136
Investments in partially-owned insurance companies	188		2,507
Separate account assets	5,306		5,190
Other assets	7,591		7,546
Total assets	$	222,748	$	199,017
Liabilities
Unpaid losses and loss expenses	$	79,705	$	75,747
Unearned premiums	22,684		19,713
Future policy benefits	13,109		10,476
Market risk benefits	770		800
Policyholders' account balances	7,178		3,140
Separate account liabilities	5,306		5,190
Insurance and reinsurance balances payable	8,481		7,780
Securities lending payable	1,469		1,523
Accounts payable, accrued expenses, and other liabilities	8,422		7,148
Deferred tax liabilities	759		377
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	2,617		1,419
Short-term debt	700		475
Long-term debt	13,736		14,402
Trust preferred securities	308		308
Total liabilities	165,244		148,498
Commitments and contingencies (refer to Note 13)
Shareholders’ equity
Common Shares (CHF 0.50 and 24.15 par value; 431,451,586 and 446,376,614 shares issued; 407,984,339 and 414,594,856 shares outstanding)	241		10,346
Common Shares in treasury (23,467,247 and 31,781,758 shares)	(3,747)		(5,113)
Additional paid-in capital	15,887		7,166
Retained earnings	51,510		48,305
Accumulated other comprehensive income (loss) (AOCI)	(11,518)		(10,185)
Total Chubb shareholders’ equity	52,373		50,519
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)	5,131		—
Total shareholders' equity	57,504		50,519
Total liabilities and shareholders’ equity	$	222,748	$	199,017

See accompanying notes to the Consolidated Financial Statements

3

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (Unaudited)

Chubb Limited and Subsidiaries

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars, except per share data)			As Adjusted				As Adjusted
Revenues
Net premiums written	$	13,104	$	12,012	$	35,765	$	31,494
Increase in unearned premiums	(430)		(482)		(1,950)		(1,678)
Net premiums earned	12,674		11,530		33,815		29,816
Net investment income	1,314		979		3,566		2,689
Net realized gains (losses)	(103)		(456)		(484)		(936)
Market risk benefits gains (losses)	(32)		69		(154)		85
Total revenues	13,853		12,122		36,743		31,654
Expenses
Losses and loss expenses	7,106		7,063		17,937		16,833
Policy benefits (includes remeasurement gains of $25, $17, $21, and $11)	938		707		2,565		1,441
Policy acquisition costs	2,178		1,970		6,142		5,415
Administrative expenses	1,060		883		2,959		2,479
Interest expense	174		150		499		416
Other (income) expense	(154)		202		(550)		(9)
Amortization of purchased intangibles	84		69		226		211
Cigna integration expenses	14		23		51		26
Total expenses	11,400		11,067		29,829		26,812
Income before income tax	2,453		1,055		6,914		4,842
Income tax expense	413		263		1,189		907
Net income	$	2,040	$	792	$	5,725	$	3,935
Net loss attributable to noncontrolling interests	(3)		—		(3)		—
Net income attributable to Chubb	$	2,043	$	792	$	5,728	$	3,935
Other comprehensive income (loss)
Change in:
Unrealized depreciation	$	(2,170)	$	(3,045)	$	(1,578)	$	(12,041)
Current discount rate on future policy benefits	683		479		497		1,546
Instrument-specific credit risk on market risk benefits	(5)		8		3		48
Cumulative foreign currency translation adjustment	(317)		(942)		(279)		(1,631)
Other, including postretirement benefit liability adjustment	37		(59)		52		(35)
Other comprehensive loss, before income tax	(1,772)		(3,559)		(1,305)		(12,113)
Income tax (expense) benefit related to OCI items	—		109		(104)		1,071
Other comprehensive loss	(1,772)		(3,450)		(1,409)		(11,042)
Comprehensive income (loss)	268		(2,658)		4,316		(7,107)
Comprehensive loss attributable to noncontrolling interests	(79)		—		(79)		—
Comprehensive income (loss) attributable to Chubb	$	347	$	(2,658)	$	4,395	$	(7,107)
Earnings per share
Basic earnings per share attributable to Chubb	$	4.99	$	1.90	$	13.90	$	9.34
Diluted earnings per share attributable to Chubb	$	4.95	$	1.89	$	13.79	$	9.26

See accompanying notes to the Consolidated Financial Statements

4

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited)

Chubb Limited and Subsidiaries

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars)			As Adjusted				As Adjusted
Common Shares
Balance – beginning of period	$	241	$	10,666	$	10,346	$	10,985
Par value reduction	—		—		(9,759)		—
Cancellation of treasury shares	—		(320)		(346)		(639)
Balance – end of period	241		10,346		241		10,346
Common Shares in treasury
Balance – beginning of period	(3,174)		(6,794)		(5,113)		(7,464)
Common Shares repurchased	(606)		(685)		(1,758)		(2,815)
Cancellation of treasury shares	—		2,473		2,869		4,983
Net shares issued under employee share-based compensation plans	33		28		255		318
Balance – end of period	(3,747)		(4,978)		(3,747)		(4,978)
Additional paid-in capital
Balance – beginning of period	16,163		7,707		7,166		8,478
Net shares redeemed (issued) under employee share-based    compensation plans	3		10		(203)		(185)
Exercise of stock options	(2)		(8)		(15)		(35)
Share-based compensation expense	75		66		230		205
Par value reduction	—		—		9,759		—
Funding of dividends declared to Retained earnings	(352)		(346)		(1,050)		(1,034)
Balance – end of period	15,887		7,429		15,887		7,429
Retained earnings
Balance – beginning of period	49,467		48,355		48,305		47,403
Net income attributable to Chubb	2,043		792		5,728		3,935
Cancellation of treasury shares	—		(2,153)		(2,523)		(4,344)
Funding of dividends declared from Additional paid-in capital	352		346		1,050		1,034
Dividends declared on Common Shares	(352)		(346)		(1,050)		(1,034)
Balance – end of period	51,510		46,994		51,510		46,994
Accumulated other comprehensive income (loss) (AOCI)
Balance – beginning of period	(9,822)		(8,666)		(10,185)		(1,074)
Other comprehensive loss	(1,696)		(3,450)		(1,333)		(11,042)
Balance – end of period	(11,518)		(12,116)		(11,518)		(12,116)
Total Chubb shareholders’ equity	$	52,373	$	47,675	$	52,373	$	47,675
Noncontrolling interests
Balance – beginning of period	$	—	$	—	$	—	$	—
Consolidation of Huatai Group	5,210		—		5,210		—
Net loss attributable to noncontrolling interests	(3)		—		(3)		—
Other comprehensive loss attributable to noncontrolling interests	(76)		—		(76)		—
Balance – end of period	$	5,131	$	—	$	5,131	$	—
Total shareholders' equity	$	57,504	$	47,675	$	57,504	$	47,675

See accompanying notes to the Consolidated Financial Statements

5

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

Chubb Limited and Subsidiaries

	Nine Months Ended
	September 30
	2023		2022
(in millions of U.S. dollars)			As Adjusted
Cash flows from operating activities
Net income	$	5,725	$	3,935
Adjustments to reconcile net income to net cash flows from operating activities
Net realized (gains) losses	484		936
Market risk benefits (gains) losses	154		(85)
Amortization of premiums/discounts on fixed maturities	(80)		185
Amortization of purchased intangibles	226		211
Equity in net income of partially-owned entities	(610)		(180)
Deferred income taxes	39		55
Unpaid losses and loss expenses	3,270		4,805
Unearned premiums	2,085		1,904
Future policy benefits	570		117
Insurance and reinsurance balances payable	23		544
Accounts payable, accrued expenses, and other liabilities	(392)		337
Income taxes payable	(6)		(108)
Insurance and reinsurance balances receivable	(1,618)		(1,756)
Reinsurance recoverable	(388)		(1,850)
Deferred policy acquisition costs	(832)		(355)
Other	796		(95)
Net cash flows from operating activities	9,446		8,600
Cash flows from investing activities
Purchases of fixed maturities available for sale	(21,613)		(23,533)
Purchases of fixed maturities held to maturity	(208)		(454)
Purchases of equity securities	(968)		(837)
Sales of fixed maturities available for sale	11,293		14,142
Sales of equity securities	531		4,453
Maturities and redemptions of fixed maturities available for sale	5,107		7,882
Maturities and redemptions of fixed maturities held to maturity	708		1,357
Net change in short-term investments	484		(1,106)
Net derivative instruments settlements	(56)		(52)
Private equity contributions	(1,313)		(2,194)
Private equity distributions	938		649
Acquisition of subsidiaries (net of cash acquired)	216		(5,095)
Other	(553)		(414)
Net cash flows used for investing activities	(5,434)		(5,202)
Cash flows from financing activities
Dividends paid on Common Shares	(1,044)		(1,030)
Common Shares repurchased	(1,848)		(2,783)
Proceeds from issuance of repurchase agreements	3,778		3,552
Repayment of long-term debt	(475)		—
Repayment of repurchase agreements	(3,832)		(2,554)
Proceeds from share-based compensation plans	140		198
Policyholder contract deposits	415		321
Policyholder contract withdrawals	(269)		(285)
Tax withholding payments for share-based compensation plans	(100)		(100)
Other	(90)		(49)
Net cash flows used for financing activities	(3,325)		(2,730)
Effect of foreign currency rate changes on cash and restricted cash	(36)		(215)
Net increase in cash and restricted cash	651		453
Cash and restricted cash – beginning of period	2,127		1,811
Cash and restricted cash – end of period	$	2,778	$	2,264
Supplemental cash flow information
Taxes paid	$	1,101	$	964
Interest paid	$	345	$	339

See accompanying notes to the Consolidated Financial Statements

6

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

Chubb Limited and Subsidiaries

1. General and significant accounting policies

a) Basis of presentation

Chubb Limited is a holding company incorporated in Zurich, Switzerland. Chubb Limited, through its subsidiaries, provides a broad range of insurance and reinsurance products to insureds worldwide. Our results are reported through the following business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. Refer to Note 18 for additional information.

The interim unaudited consolidated financial statements include the accounts of Chubb Limited and its subsidiaries (collectively, Chubb, we, us, or our), over which Chubb exercises control, including Huatai Group, our majority-owned subsidiary, and minority-owned entities such as variable interest entities (VIEs) in which Chubb is considered the primary beneficiary. Noncontrolling interests on the consolidated financial statements represent the portion of majority-owned subsidiaries and VIEs in which we do not have direct equity ownership. These interim unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) and, in the opinion of management, reflect all adjustments necessary for a fair statement of the results and financial position for such periods. All significant intercompany accounts and transactions, including internal reinsurance transactions, have been eliminated.

On July 1, 2023, Chubb increased its investment in Huatai Group from approximately 64.2 percent to approximately 69.6 percent. Accordingly, Chubb discontinued the equity method of accounting for its investment in Huatai Group and applied consolidation accounting. Business activity for, and the financial position of, Huatai Group is reported at 100 percent on the Consolidated Financial Statements starting when Chubb obtained control of Huatai Group on July 1, 2023. The relevant amounts attributable to shareholders other than Chubb (representing approximately 30.4 percent of Huatai Group) are reflected under Noncontrolling interests, Net income (loss) attributable to noncontrolling interests, and Comprehensive income (loss) attributable to noncontrolling interests in the Consolidated Financial Statements. Refer to Note 2 for additional information.

Huatai Group's life and asset management businesses are included in the Life Insurance segment, and Huatai Group's P&C business is included in the Overseas General Insurance segment. Results for Huatai Group's non-insurance operations, comprising real estate and holding company activity, are included in Corporate.

The results of operations and cash flows for any interim period are not necessarily indicative of the results for the full year. These consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our 2022 Form 10-K.

b) Accounting policies adopted upon consolidation of Huatai Group

The following accounting policies have been adopted or updated upon the consolidation of Huatai Group and its subsidiaries (collectively, Huatai) in the third quarter of 2023:

Asset management and performance fee revenue and expenses

Huatai's asset management companies recognize revenue and expenses unrelated to Chubb's core insurance operations from the management of third-party assets. These revenues include fixed-rate management fees, which are recognized in the period in which the services are performed, and asset performance fees, which are recognized to the extent it is probable that a significant reversal will not occur. These fees and expenses are included in Other (income) expense on the Consolidated statements of operations. Refer to Note 17 for additional information.

Private debt held-for-investment, at amortized cost

Private debt held-for-investment are investments related principally to the funding of public and private projects that are mostly infrastructure related, and were acquired as part of Huatai’s investment portfolio upon consolidation. They have stated interest rates and maturity dates with fixed or determinable payments. Private debt held-for-investment are carried at amortized cost, net of a valuation allowance for credit losses. Interest income is recorded when earned.

Other investments

Chubb consolidates entities in which it has a controlling interest or is a primary beneficiary of a VIE. Huatai’s asset management businesses create investment entities known as sponsored investment products which include mutual funds with primary holdings in fixed maturities.

7

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

Other investments principally comprised these fixed maturities. These securities are reported at fair value with changes in fair value reported through the Consolidated statements of operations within Net realized gains (losses) as required under investment company accounting standards.

Consolidation of variable interest entities (VIEs)

Chubb consolidates entities in which it has a controlling interest or is a primary beneficiary of a VIE. Huatai's asset management businesses create investment entities known as sponsored investment products which include mutual funds with primary holdings in fixed maturities. These entities are created for varied purposes during the ordinary course of business, such as to obtain returns from investments, and to collect management fees for the assets managed on behalf of the third party investors. While many investors may not be related parties, Huatai invests in these funds at various ownership percentages. We determined that we are the primary beneficiary of these VIEs and generally consolidate when we hold an economic interest of 10 percent or more. The consolidation of VIEs records 100 percent of the underlying assets and liabilities of the mutual funds within the Consolidated balance sheets. The relevant amounts attributable to investors other than Chubb are reflected as Noncontrolling interests. Where Huatai's ownership in these sponsored investment products is less than 10 percent, we generally would not expect to be the primary beneficiary of these VIEs. Refer to Note 3 g) for additional information.

c) Accounting guidance adopted in 2023

Targeted Improvements to the Accounting for Long-Duration Contracts

Effective January 1, 2023, we adopted new guidance on the accounting for long-duration contracts (LDTI). The new accounting guidance requires more frequent updating of assumptions and a standardized discount rate for the future policy benefit liability, a requirement to use the fair value measurement model for policies with market risk benefits, simplified amortization of deferred acquisition costs, and enhanced disclosures.

With the exception of market risk benefits, we adopted this guidance on a modified retrospective basis. Under the modified retrospective basis, the liability for future policy benefits is updated to remove any amounts related to changes to the original discount rate at January 1, 2021 (the transition date) in AOCI and future cash flow assumptions are applied to contracts in force. The liability for future policy benefits prior to the transition date continues to use the original discount rate (interest accretion rate). The guidance for long-duration contracts applicable to market risk benefits, primarily assumed reinsurance programs involving minimum benefit guarantees under variable annuity contracts, was adopted on a retrospective transition approach. Under the retrospective transition approach, we calculated the fair value of market risk benefits which were previously accounted for under an insurance accounting model and recognized an adjustment to retained earnings as of January 1, 2021.

On January 1, 2021, we recognized a cumulative effect adjustment and increased beginning retained earnings by $52 million, and decreased AOCI by $1.8 billion. Results for the prior reporting periods in this report are presented in accordance with the new guidance. We also adopted the required disclosures in Note 6 Deferred acquisition costs, Note 9 Future policy benefits, Note 10 Policyholders’ account balances, Note 11 Market risk benefits, and Note 12 Separate accounts.

8

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The impact of adoption of the new guidance on our historical financial statements is as follows:

	December 31, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated balance sheet
Reinsurance recoverable on losses and loss expenses	$	18,901	$	(42)	$	18,859
Reinsurance recoverable on policy benefits	303		(1)		302
Deferred policy acquisition costs	5,788		243		6,031
Value of business acquired	3,596		106		3,702
Prepaid reinsurance premiums	3,140		(4)		3,136
Investments in partially-owned insurance companies	2,877		(370)		2,507
Unpaid losses and loss expenses	76,323		(576)		75,747
Unearned premiums	20,360		(647)		19,713
Future policy benefits	10,120		356		10,476
Market risk benefits	—		800		800
Insurance and reinsurance balances payable	7,795		(15)		7,780
Deferred tax liabilities	292		85		377
Retained Earnings	48,334		(29)		48,305
Accumulated other comprehensive income (loss)	(10,193)		8		(10,185)

Excluded from the table above is the reclassification of Separate account assets, Separate account liabilities, and Policyholders' account balances as separate line items on the Consolidated balance sheets. Separate accounts assets were previously classified in Other assets, and Separate account liabilities and Policyholders' account balances were previously classified in Accounts payable, accrued expenses, and other liabilities.

9

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

	Three Months Ended						Nine Months Ended
	September 30, 2022						September 30, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted		As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statements of operations and comprehensive income
Net premiums written	$	12,020	$	(8)	$	12,012	$	31,521	$	(27)	$	31,494
Net premiums earned	11,535		(5)		11,530		29,838		(22)		29,816
Net realized gains (losses)	(384)		(72)		(456)		(787)		(149)		(936)
Market risk benefits gains (losses)	—		69		69		—		85		85
Losses and loss expenses	7,279		(216)		7,063		17,474		(641)		16,833
Policy benefits	486		221		707		790		651		1,441
Policy acquisition costs	1,975		(5)		1,970		5,451		(36)		5,415
Other (income) expense	188		14		202		(21)		12		(9)
Income tax expense	265		(2)		263		913		(6)		907
Net Income	812		(20)		792		4,001		(66)		3,935
Other comprehensive income
Change in current discount rate on future policy benefits	—		479		479		—		1,546		1,546
Change in instrument-specific credit risk on market risk benefits	—		8		8		—		48		48
Income tax benefit related to OCI items	165		(56)		109		1,222		(151)		1,071
Comprehensive income (loss)	(3,093)		435		(2,658)		(8,529)		1,422		(7,107)

	Nine Months Ended
	September 30,2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statement of cash flows
Net cash flows from operating activities	$	8,592	$	8	$	8,600
Net cash flows used for financing activities	(2,722)		(8)		(2,730)

10

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of future policy benefits:

	Life Insurance								Overseas General Insurance				Offsetting Equity Line Classification
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		A&H		Total
Future policy benefits
Balance – December 31, 2020 (1)	$	391	$	2,578	$	2,270	$	72	$	754	$	6,065
Effect of change in current discount rate	63		1,189		299		17		19		1,587		AOCI
Balance – January 1, 2021	$	454	$	3,767	$	2,569	$	89	$	773	$	7,652

(1)     Includes future policy benefits previously included within Unpaid losses on the pre-adoption Consolidated balance sheets, primarily certain international A&H business, and excludes deferred profit liability and certain guaranteed minimum death benefits reclassified to Market risk benefits on the post adoption period balance sheets.

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of market risk benefits:

(in millions of U.S. dollars)			Offsetting Equity Line Classification
Market risk benefits
Balance – December 31, 2020	$	1,138
Cumulative effect of changes in instrument-specific credit risk between original contract issuance date and transition date (1)	84		AOCI
Other fair value adjustments	(59)		Retained Earnings
Balance – January 1, 2021	$	1,163

(1)     Includes $77 million of instrument-specific credit risk allocated from retained earnings to AOCI.

Significant accounting policies

The following accounting policies have been updated to reflect the adoption of LDTI. Refer to Note 1 in the 2022 Form 10-K for a complete description of our accounting policies.

Deferred policy acquisition costs (DAC)

Policy acquisition costs on long-duration contracts are grouped by contract type and issue year into cohorts consistent with the grouping used in estimating the associated liability. Deferred policy acquisition costs are amortized on a constant level basis over the expected term of the related contracts to approximate straight-line amortization. The constant level basis used for amortization is the face amount in force and is projected using the same assumptions used in estimating the liability for future policy benefits. If those projected assumptions change in future periods, they will be reflected in the cohort level amortization basis at that time. Unexpected changes in the in-force portfolio, due to variances in mortality and lapse experience, are recognized over the contract term. Changes in future mortality and lapse assumptions are also recognized prospectively over the remaining expected contract term.

Future policy benefits

For traditional and limited-payment contracts, contracts are grouped into cohorts by contract type and issue year to determine a liability for future policy benefits. The future policy benefit liability (FPBL) is the present value of estimated future policy benefits to be paid to or on behalf of policyholders and certain related expenses less the present value of estimated future net premiums to be collected from policyholders, and is accrued as premium revenue is recognized. The valuation of this liability requires management to make estimates and assumptions regarding expenses, mortality, and persistency. Estimates are primarily based on historical experience. Actual results could differ materially from these estimates.

The liability is adjusted for differences between actual and expected experience. With the exception of the expense assumption, we review our future cash flow assumptions at least annually to determine if the net premium ratio (NPR), the mechanism used to record the liability as premium is earned, used to calculate the liability should be changed at that time. We have elected to use expense assumptions that are locked in at contract inception and are not subsequently reviewed or updated. Each quarter, we update the cash flows expected over the entire life of each cohort for actual historical experience and projected future cash

11

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

flows. These updated cash flows are used to calculate the revised NPR, which is used to derive an updated FPBL as of the beginning of the current reporting period, discounted at the original contract issuance discount rate. This amount is then compared to the carrying amount of the liability as of that same date, but before the updating of cash flow assumptions, to determine the current period change in FPBL. This current period change in the liability is the liability remeasurement gain or loss and is recorded in Policy benefits in the Consolidated statements of operations. In subsequent periods, the revised NPR is used to measure the FPBL until future revisions become required.

For traditional and limited-payment contracts, the discount rate assumption based on an upper-medium grade fixed-income instrument yield. An equivalent rate is derived based on A-credit-rated fixed-income instruments with similar duration to the liability. The discount rate assumption is updated quarterly and used to remeasure the liability at each reporting date, with the resulting change reflected in Other comprehensive income. For liability cash flows that are projected beyond the duration of market-observable A-credit-rated fixed-income instruments, we use the last market-observable yield level, as the basis for a linear interpolation to determine yield assumptions for durations that do not have market-observable yields.

Deferred profit liability

For limited-payment products, gross premiums received in excess of net premiums are deferred at initial recognition as a deferred profit liability (DPL) and recorded as a component of Future policy benefits in the Consolidated balance sheets. Net premiums are measured using actual cash flows and future cash flow assumptions consistent with those used in the measurement of the liability for future policy benefits and remeasured quarterly. The DPL is amortized in proportion to the discounted in-force policies. Interest is accreted on the balance of the DPL using the discount rate consistent with the interest accretion on the FPBL. The recalculated DPL, including adjusted amortization through the current period, is compared to the current carrying amount and the difference is recognized as an adjustment to Policy benefits in the Consolidated statements of operations as a remeasurement gain or loss.

Market risk benefits

Chubb reinsures various death and living benefit guarantees associated with variable annuities issued primarily in the United States, which are referred to as market risk benefits. These reinsurance contracts provide both protection to the ceding entity from other-than-nominal capital market risk and expose us to other-than-nominal capital market risk.

Market risk benefits are measured at fair value using a valuation model based on current net exposures, market data, our experience, and other factors. Changes in fair value are recognized in Market risk benefits gains (losses) in the Consolidated statements of operations, except the change in fair value due to a change in the instrument-specific credit risk, which is recognized in other comprehensive income. Refer to Note 11 for additional information.

2. Acquisitions

Huatai Group

Huatai Insurance Group Co., Ltd. (Huatai Group) is a Chinese financial services holding company and the parent company of, among others, Huatai Property & Casualty Insurance Co., Ltd. (Huatai P&C), Huatai Life Insurance Co., Ltd. (Huatai Life), Huatai Asset Management Co., Ltd., and Huatai Baoxing Fund Management Co., Ltd., of which Huatai Group owns 100 percent, 80 percent, 82 percent, and 85 percent, respectively (collectively, Huatai).

On July 1, 2023, Chubb increased its investment in Huatai Group from approximately 64.2 percent to approximately 69.6 percent. Chubb paid $318 million for the incremental 5.4 percent ownership interest.

On October 1, 2023, we closed on an incremental ownership interest of approximately 2.5 percent for $146 million, which was previously paid as a deposit. Chubb has agreements in place to acquire approximately 14.1 percent of incremental ownership interests, pending completion of certain closing conditions, of which approximately 3 percent also requires regulatory approval. We have paid deposits of $416 million for the approximately 14.1 percent of ownership interests, and the remaining aggregate purchase price to be paid upon closing is approximately $433 million, based on current exchange rates. Refer to Note 2 to the Consolidated Financial Statements in our 2022 Form 10-K for additional information.

12

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

Upon discontinuation of the equity method of accounting, Chubb remeasured the 64.2 percent equity method investment to its fair value of $4.1 billion as of July 1, 2023, resulting in a one-time realized gain of $744 million after-tax, reflecting the remeasurement of the previously held equity interest's historical carrying value to fair value. There was also a net realized and unrealized loss of $17 million after-tax reflecting the write-off of AOCI loss balances accumulated while under the equity method of $611 million with an offset to realized loss of $628 million.

The acquisition of a controlling majority interest in Huatai Group generated $3,394 million of Goodwill, attributable to expected growth and profitability, and $1,655 million of Other intangible assets. None of the goodwill is expected to be deductible for income tax purposes. Additionally, the acquisition of a controlling majority interest in Huatai Group generated $309 million of Value of business acquired (VOBA). Chubb financed the transaction through available cash on hand. Direct costs related to the acquisition were expensed as incurred. These include one-time costs that are directly attributable to third-party consulting fees and other professional and legal fees related to the acquisition.

The following table summarizes Chubb's best estimate of fair value of the assets acquired and liabilities assumed on July 1, 2023. The fair value of assets and liabilities are preliminary and may change with offsetting adjustments to goodwill. Chubb may make further adjustments to its purchase price allocation and the fair value of noncontrolling interest through the end of the permissible one-year measurement period.

Preliminary estimate of Huatai Group assets and liabilities consolidated	July 1
(in millions of U.S. dollars)	2023
Assets
Investments and Cash	$	13,346
Accrued investment income	60
Insurance and reinsurance balances receivable	277
Reinsurance recoverable on losses and loss expenses	581
Reinsurance recoverable on future policy benefits	27
Value of business acquired	309
Goodwill and intangible assets	5,049
Other assets	748
Total assets	$	20,397
Liabilities
Unpaid losses and loss expenses	$	831
Unearned premiums	800
Future policy benefits	2,287
Policyholders' account balances	4,014
Insurance and reinsurance balances payable	644
Accounts payable, accrued expenses, and other liabilities	702
Deferred tax liabilities	232
Repurchase agreements	1,269
Total liabilities	$	10,779
Net acquired assets, including goodwill, attributable to Chubb	4,408
Net acquired assets, attributable to noncontrolling interests	5,210
Net acquired assets, including goodwill	$	9,618

The following table summarizes the results of the acquired Huatai Group operations that have been included within our Consolidated statements of operations for the three and nine months ended September 30, 2023:

(in millions of U.S. dollars)
Total revenues	$	389
Net loss	$	(11)
Net loss attributable to Chubb	$	(9)

13

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The preliminary purchase price allocation to intangible assets recorded in connection with the Huatai Group acquisition and their related useful lives at July 1, 2023, are as follows:

(in millions of U.S. dollars)	Amount		Weighted-average useful life
Definite life
Agency distribution relationships	$	332	20 years
Asset management customer contracts	94		16 years
Unearned premium reserves (UPR) intangible asset	95		3 years
Land use rights	569		31 years
Technology	45		6 years
Indefinite life
Trademarks	398		Indefinite
Asset management mutual funds	122		Indefinite
Total identified intangible assets	$	1,655

The following table presents supplemental unaudited pro forma consolidated information for the periods indicated as though the acquisition of a controlling majority interest in Huatai Group that occurred on July 1, 2023, had instead occurred on January 1, 2022. The unaudited pro forma consolidated financial information is presented for informational purposes only and is not necessarily indicative of the operating results that would have occurred had the acquisition of a controlling majority interest been consummated on January 1, 2022, nor is it necessarily indicative of future operating results. Significant assumptions used to determine pro forma operating results include amortization of VOBA and other intangible assets.

	Three Months Ended				Nine Months Ended
Pro forma:	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Net premiums earned	$	12,674	$	11,952	$	34,605	$	30,996
Total revenues	$	13,755	$	12,612	$	37,589	$	33,019
Net income	$	1,905	$	787	$	5,595	$	3,975
Net income attributable to Chubb	$	1,912	$	777	$	5,587	$	3,935

Cigna’s Accident and Health (A&H) and Life Insurance Business in Asian Markets

On July 1, 2022, we completed the acquisition of the life and non-life insurance companies that house the personal accident, supplemental health, and life insurance business of Cigna in several Asian markets. Chubb paid approximately $5.4 billion in cash for the operations, which include Cigna's accident and health (A&H) and life business in Korea, Taiwan, New Zealand, Thailand, Hong Kong, and Indonesia, collectively referred to as Cigna's business in Asia. This complementary strategic acquisition expands our presence and advances our long-term growth opportunity in Asia. Effective July 1, 2022, the results of operations of this acquired business are reported primarily in our Life Insurance segment and, to a lesser extent, our Overseas General Insurance segment. Refer to the 2022 Form 10-K for additional information on this acquisition.

The acquisition of Cigna's business in Asia generated $1,177 million of goodwill, attributable to expected growth and profitability, and $309 million of other intangible assets. None of the goodwill is expected to be deductible for income tax purposes. Additionally, the acquisition of Cigna's business in Asia generated $3,633 million of value of business acquired (VOBA). Chubb financed the transaction through a combination of available cash and $2.0 billion in repurchase agreements that expired at the end of 2022. Direct costs related to the acquisition were expensed as incurred.

14

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The following table summarizes the fair value of the assets acquired and liabilities assumed at July 1, 2022:

Assets acquired and liabilities assumed from Cigna's business in Asia	July 1
(in millions of U.S. dollars)	2022
Assets
Investments and Cash	$	5,274
Accrued investment income	33
Insurance and reinsurance balances receivable	52
Reinsurance recoverable on losses and loss expenses	3
Reinsurance recoverable on future policy benefits	85
Value of business acquired	3,633
Goodwill and intangible assets	1,486
Other assets	648
Total assets	$	11,214
Liabilities
Unpaid losses and loss expenses	$	12
Unearned premiums	60
Future policy benefits	3,856
Insurance and reinsurance balances payable	115
Accounts payable, accrued expenses, and other liabilities	926
Deferred tax liabilities	886
Total liabilities	$	5,855
Net acquired assets, including goodwill	5,359
Total	$	11,214

The following table summarizes the results of the acquired Cigna business in Asia that have been included within our Consolidated statements of operations for the three and nine months ended September 30, 2022:

(in millions of U.S. dollars)
Total revenues	$	681
Net income	$	17

The following table presents supplemental unaudited pro forma consolidated information for the periods indicated as though the acquisition of Cigna's business in Asia that occurred on July 1, 2022, had instead occurred on January 1, 2021. The unaudited pro forma consolidated financial information is presented for informational purposes only and is not necessarily indicative of the operating results that would have occurred had the acquisition been consummated on January 1, 2021, nor is it necessarily indicative of future operating results. Significant assumptions used to determine pro forma operating results include amortization of VOBA and other intangible assets and recognition of interest expense associated with the repurchase agreement transactions used to effect the acquisition.

	Three Months Ended		Nine Months Ended
Pro forma:	September 30		September 30
(in millions of U.S. dollars)	2022		2022
Net premiums earned	$	11,530	$	31,341
Total revenues	$	12,124	$	33,161
Net income	$	837	$	4,172

15

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

3. Investments

a) Transfers of securities

In June 2023, we determined that we no longer have the intent to hold securities in our held to maturity (HTM) portfolio until maturity. As a result, our entire HTM securities portfolio was transferred to the available for sale (AFS) portfolio. This decision allowed us to increase our flexibility to execute on our investment strategy and take advantage of the continuing higher reinvestment environment while not making any major change to our current asset allocation. At the time of the transfer on June 30, 2023, these securities had a carrying value of $8.2 billion and a fair value of $7.8 billion, resulting in an increase to Unrealized depreciation in OCI of $428 million, after-tax. This transfer represents a non-cash transaction and does not impact the Consolidated Statements of Cash Flows.

b) Fixed maturities

September 30, 2023	Amortized Cost		Valuation Allowance		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Available for sale
U.S. Treasury / Agency	$	3,944	$	—	$	2	$	(265)	$	3,681
Non-U.S.	34,912		(53)		239		(2,381)		32,717
Corporate and asset-backed securities	44,932		(104)		61		(4,034)		40,855
Mortgage-backed securities	22,402		(1)		6		(2,802)		19,605
Municipal	3,165		—		2		(259)		2,908
	$	109,355	$	(158)	$	310	$	(9,741)	$	99,766

December 31, 2022	Amortized Cost		Valuation Allowance		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Available for sale
U.S. Treasury / Agency	$	2,792	$	—	$	5	$	(171)	$	2,626
Non-U.S.	28,064		(59)		108		(2,205)		25,908
Corporate and asset-backed securities	40,547		(107)		49		(3,534)		36,955
Mortgage-backed securities	17,871		(3)		4		(2,021)		15,851
Municipal	4,081		—		8		(209)		3,880
	$	93,355	$	(169)	$	174	$	(8,140)	$	85,220

December 31, 2022	Amortized Cost		Valuation Allowance		Net Carrying Value		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Held to maturity
U.S. Treasury / Agency	$	1,417	$	—	$	1,417	$	1	$	(48)	$	1,370
Non-U.S.	1,140		(4)		1,136		—		(82)		1,054
Corporate and asset-backed securities	1,733		(28)		1,705		1		(126)		1,580
Mortgage-backed securities	1,456		(1)		1,455		—		(104)		1,351
Municipal	3,136		(1)		3,135		1		(52)		3,084
	$	8,882	$	(34)	$	8,848	$	3	$	(412)	$	8,439

16

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The following table presents the amortized cost of our held to maturity securities according to S&P rating:

	December 31, 2022
(in millions of U.S. dollars, except for percentages)	Amortized cost		% of Total
AAA	$	1,612	18	%
AA	5,023		57	%
A	1,634		18	%
BBB	593		7	%
BB	20		—	%
Total	$	8,882	100	%

The following table presents fixed maturities by contractual maturity:

	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)	Net Carrying Value		Fair Value		Net Carrying Value		Fair Value
Available for sale
Due in 1 year or less	$	4,805	$	4,805	$	2,962	$	2,962
Due after 1 year through 5 years	31,738		31,738		24,791		24,791
Due after 5 years through 10 years	27,452		27,452		26,679		26,679
Due after 10 years	16,166		16,166		14,937		14,937
	80,161		80,161		69,369		69,369
Mortgage-backed securities	19,605		19,605		15,851		15,851
	$	99,766	$	99,766	$	85,220	$	85,220
Held to maturity
Due in 1 year or less	$	—	$	—	$	1,015	$	1,003
Due after 1 year through 5 years	—		—		3,658		3,531
Due after 5 years through 10 years	—		—		1,460		1,423
Due after 10 years	—		—		1,260		1,131
	—		—		7,393		7,088
Mortgage-backed securities	—		—		1,455		1,351
	$	—	$	—	$	8,848	$	8,439

Expected maturities could differ from contractual maturities because borrowers may have the right to call or prepay obligations, with or without call or prepayment penalties. 

c) Gross unrealized loss

Fixed maturities in an unrealized loss position at September 30, 2023, and December 31, 2022, comprised both investment grade and below investment grade securities for which fair value declined, principally due to rising interest rates since the date of purchase. Refer to Note 1 e) in the 2022 Form 10-K for further information on factors considered in the evaluation of expected credit losses.

17

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The following tables present, for AFS fixed maturities in an unrealized loss position (including securities on loan) that are not deemed to have expected credit losses, the aggregate fair value and gross unrealized loss by length of time the security has been in an unrealized loss position:

	0 – 12 Months				Over 12 Months				Total
September 30, 2023	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
(in millions of U.S. dollars)
U.S. Treasury / Agency	$	1,108	$	(32)	$	2,449	$	(233)	$	3,557	$	(265)
Non-U.S.	8,591		(280)		16,631		(1,670)		25,222		(1,950)
Corporate and asset-backed securities	10,120		(362)		22,672		(2,441)		32,792		(2,803)
Mortgage-backed securities	5,827		(249)		13,450		(2,510)		19,277		(2,759)
Municipal	1,389		(51)		1,269		(208)		2,658		(259)
Total AFS fixed maturities	$	27,035	$	(974)	$	56,471	$	(7,062)	$	83,506	$	(8,036)

	0 – 12 Months				Over 12 Months				Total
December 31, 2022	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
(in millions of U.S. dollars)
U.S. Treasury / Agency	$	2,152	$	(125)	$	386	$	(46)	$	2,538	$	(171)
Non-U.S.	15,538		(1,012)		5,490		(704)		21,028		(1,716)
Corporate and asset-backed securities	25,687		(1,793)		4,190		(552)		29,877		(2,345)
Mortgage-backed securities	10,561		(1,033)		4,770		(941)		15,331		(1,974)
Municipal	3,251		(152)		155		(48)		3,406		(200)
Total AFS fixed maturities	$	57,189	$	(4,115)	$	14,991	$	(2,291)	$	72,180	$	(6,406)

At September 30, 2023, the tax benefit on certain unrealized losses in our investment portfolio was reduced by a valuation allowance of $1,108 million necessary due to limitations on the utilization of these losses. As part of evaluating whether it was more likely than not that we could realize these losses, we considered realized gains, carryback ability and available tax planning strategies.

The following table presents a roll-forward of valuation allowance for expected credit losses on fixed maturities:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Available for sale
Valuation allowance for expected credit losses - beginning of period	$	193	$	78	$	169	$	14
Provision for expected credit loss	34		91		172		169
Write-offs charged against the expected credit loss	(1)		—		(5)		—
Foreign currency revaluation	—		(2)		—		(2)
Recovery of expected credit loss	(68)		(20)		(178)		(34)
Valuation allowance for expected credit losses - end of period	$	158	$	147	$	158	$	147
Held to maturity
Valuation allowance for expected credit losses - beginning of period	$	—	$	34	$	34	$	35
Provision for expected credit loss	—		—		—		1
Recovery of expected credit loss	—		(1)		(34)		(3)
Valuation allowance for expected credit losses - end of period	$	—	$	33	$	—	$	33

18

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

d) Net realized gains (losses)

The following table presents the components of Net realized gains (losses):

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Fixed maturities:
Gross realized gains	$	97	$	144	$	116	$	545
Gross realized losses	(185)		(331)		(457)		(1,158)
Net (provision for) recovery of expected credit losses	34		(70)		44		(133)
Impairment (1)	(16)		(22)		(60)		(111)
Total fixed maturities	(70)		(279)		(357)		(857)
Equity securities	(100)		(80)		(61)		(287)
Private equities	40		(42)		75		17
Foreign exchange	(67)		202		(122)		546
Investment and embedded derivative instruments	9		(198)		(92)		(232)
Other derivative instruments	(7)		(19)		(6)		(9)
Other (2)	92		(40)		79		(114)
Net realized gains (losses) (pre-tax)	$	(103)	$	(456)	$	(484)	$	(936)

(1)Relates to certain securities we intended to sell and securities written to market entering default.

(2)The three and nine months ended September 30, 2023 Includes a one-time realized gain of $116 million as a result of the consolidation of Huatai Group.

Realized gains and losses from Other investments, Equity securities and Private equities from the table above include sales of securities and unrealized gains and losses from fair value changes as follows:

									Three Months Ended
									September 30
	2023								2022
(in millions of U.S. dollars)	Other Investments		Equity Securities		Private Equities		Total		Equity Securities		Private Equities		Total
Net gains (losses) recognized during the period	$	(1)	$	(100)	$	40	$	(61)	$	(80)	$	(42)	$	(122)
Less: Net gains (losses) recognized from sales of securities	—		(45)		—		(45)		(12)		—		(12)
Unrealized gains (losses) recognized for securities still held at reporting date	$	(1)	$	(55)	$	40	$	(16)	$	(68)	$	(42)	$	(110)

19

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

									Nine Months Ended
									September 30
	2023								2022
(in millions of U.S. dollars)	Other Investments		Equity Securities		Private Equities		Total		Equity Securities		Private Equities		Total
Net gains (losses) recognized during the period	$	(1)	$	(61)	$	75	$	13	$	(287)	$	17	$	(270)
Less: Net gains (losses) recognized from sales of securities	—		(48)		—		(48)		406		—		406
Unrealized gains (losses) recognized for securities still held at reporting date	$	(1)	$	(13)	$	75	$	61	$	(693)	$	17	$	(676)

e) Alternative investments

Alternative investments include partially-owned investment companies, investment funds, and limited partnerships measured at fair value using net asset value (NAV) as a practical expedient. The following table presents, by investment category, the expected liquidation period, fair value, and maximum future funding commitments of alternative investments:

	Expected Liquidation Period of Underlying Assets	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)		Fair Value		Maximum Future Funding Commitments		Fair Value		Maximum Future Funding Commitments
Financial	2 to 10 Years	$	1,219	$	384	$	1,074	$	505
Real assets	2 to 13 Years	2,136		526		2,166		681
Distressed	2 to 8 Years	1,160		810		1,048		755
Private credit	3 to 8 Years	319		309		215		429
Traditional	2 to 14 Years	8,222		4,280		7,424		5,025
Vintage	1 to 3 Years	78		—		55		—
Investment funds	Not Applicable	228		—		373		—
		$	13,362	$	6,309	$	12,355	$	7,395

Included in all categories in the above table, except for Investment funds, are investments for which Chubb will never have the contractual option to redeem but receives distributions based on the liquidation of the underlying assets. Further, for all categories except for Investment funds, Chubb does not have the ability to sell or transfer the investments without consent from the general partner of the individual funds.

Investment Category:	Consists of investments in private equity funds:
Financial	targeting financial services companies, such as financial institutions and insurance services worldwide
Real assets	targeting investments related to hard physical assets, such as real estate, infrastructure and natural resources
Distressed	targeting distressed corporate debt/credit and equity opportunities in the U.S.
Private credit	targeting privately originated corporate debt investments, including senior secured loans and subordinated bonds
Traditional	employing traditional private equity investment strategies, such as buyout and growth equity globally
Vintage	funds where the initial fund term has expired

    

20

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

Investment funds employ various investment strategies, such as long/short equity and arbitrage/distressed. Included in this category are investments for which Chubb has the option to redeem at agreed upon value as described in each investment fund’s subscription agreement. Depending on the terms of the various subscription agreements, investment fund investments may be redeemed monthly, quarterly, semi-annually, or annually. If Chubb wishes to redeem an investment fund investment, it must first determine if the investment fund is still in a lock-up period (a time when Chubb cannot redeem its investment so that the investment fund manager has time to build the portfolio). If the investment fund is no longer in its lock-up period, Chubb must then notify the investment fund manager of its intention to redeem by the notification date prescribed by the subscription agreement. Subsequent to notification, the investment fund can redeem Chubb’s investment within several months of the notification. Notice periods for redemption of the investment funds are up to 270 days. Chubb can redeem its investment funds without consent from the investment fund managers.

f) Restricted assets

Chubb is required to maintain assets on deposit with various regulatory authorities to support its insurance and reinsurance operations. These requirements are generally promulgated in the statutory regulations of the individual jurisdictions. The assets on deposit are available to settle insurance and reinsurance liabilities. Chubb is also required to restrict assets pledged under repurchase agreements, which represent Chubb's agreement to sell securities and repurchase them at a future date for a predetermined price. We use trust funds in certain large reinsurance transactions where the trust funds are set up for the benefit of the ceding companies and generally take the place of letter of credit (LOC) requirements. We have investments in segregated portfolios primarily to provide collateral or guarantees for LOC and derivative transactions. Included in restricted assets at September 30, 2023, and December 31, 2022, are investments, primarily fixed maturities, totaling $17,505 million and $15,721 million, respectively, and cash of $192 million and $115 million, respectively.

The following table presents the components of restricted assets:

	September 30		December 31
(in millions of U.S. dollars)	2023		2022
Trust funds	$	8,462	$	8,120
Deposits with U.S. regulatory authorities	2,290		2,345
Deposits with non-U.S. regulatory authorities	3,366		2,959
Assets pledged under repurchase agreements	2,753		1,527
Other pledged assets	826		885
Total	$	17,697	$	15,836

g) Variable interest entities (VIEs)

Consolidated VIEs

Certain subsidiaries of Huatai Group are the investment manager of, and maintain investments in, sponsored investment products that are considered Variable Interest entities (VIEs). Refer to Note 1 for further information on our consolidation criteria. The assets of these VIEs are not available to our creditors, and the investors in these VIEs have no recourse to Chubb in excess of the assets contained within the VIEs. Our economic exposures are limited to our investments based on our ownership interest in these VIEs. Our total exposure to these sponsored investment products represents the value of our economic ownership interest.

21

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The following table presents the balances related to these sponsored investment products accounted for as VIEs that were recorded on our Consolidated balance sheets, including our net interest in these sponsored investment products:

	September 30
(in millions of U.S. dollars)	2023
Short-term investments	$	466
Equity securities	986
Private equities	21
Other investments	3,937
Total investments of consolidated VIEs	5,410
Cash	164
Other assets	22
Total assets of consolidated VIEs	$	5,596
Other liabilities	32
Repurchase agreements	837
Total liabilities of consolidated VIEs	869
Noncontrolling interests	3,176
Chubb's net interest in consolidated VIEs	$	1,551

The carrying value of assets and liabilities on the Consolidated balance sheets relating to nonconsolidated sponsored investment products where we are not the primary beneficiary is immaterial.

4. Fair value measurements

a) Fair value hierarchy

Fair value of financial assets and financial liabilities is estimated based on the framework established in the fair value accounting guidance. The guidance defines fair value as the price to sell an asset or transfer a liability (an exit price) in an orderly transaction between market participants and establishes a three-level valuation hierarchy based on the reliability of the inputs. The fair value hierarchy gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data.

The three levels of the hierarchy are as follows:

•Level 1 – Unadjusted quoted prices for identical assets or liabilities in active markets;

•Level 2 – Includes, among other items, inputs other than quoted prices that are observable for the asset or liability such as

interest rates and yield curves, quoted prices for similar assets and liabilities in active markets, and quoted prices for identical or similar assets and liabilities in markets that are not active; and

•Level 3 – Inputs that are unobservable and reflect management’s judgments about assumptions that market participants

would use in pricing an asset or liability.

We categorize financial instruments within the valuation hierarchy at the balance sheet date based upon the lowest level of inputs that are significant to the fair value measurement.

We use pricing services to obtain fair value measurements for the majority of our investment securities. Based on management’s understanding of the methodologies used, these pricing services only produce an estimate of fair value if there is observable market information that would allow them to make a fair value estimate. Based on our understanding of the market inputs used by the pricing services, all applicable investments have been valued in accordance with GAAP. We do not adjust prices obtained from pricing services. The following is a description of the valuation techniques and inputs used to determine fair values for financial instruments carried at fair value, as well as the general classification of such financial instruments pursuant to the valuation hierarchy.

22

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

Fixed maturities

We use pricing services to estimate fair value measurements for the majority of our fixed maturities. The pricing services use market quotations for fixed maturities that have quoted prices in active markets; such securities are classified within Level 1. For fixed maturities other than U.S. Treasury securities that generally do not trade on a daily basis, the pricing services prepare estimates of fair value measurements using their pricing applications or pricing models, which include available relevant market information, benchmark curves, benchmarking of like securities, sector groupings, and matrix pricing. Additional valuation factors that can be taken into account are nominal spreads, dollar basis, and liquidity adjustments. The pricing services evaluate each asset class based on relevant market and credit information, perceived market movements, and sector news. The market inputs used in the pricing evaluation, listed in the approximate order of priority include: benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, reference data, and industry and economic events. The extent of the use of each input is dependent on the asset class and the market conditions. Given the asset class, the priority of the use of inputs may change, or some market inputs may not be relevant. Additionally, fixed maturities valuation is more subjective when markets are less liquid due to the lack of market based inputs (i.e., stale pricing) and may require the use of models to be priced. The lack of market based inputs may increase the potential that an investment's estimated fair value is not reflective of the price at which an actual transaction would occur. The overwhelming majority of fixed maturities are classified within Level 2 because the most significant inputs used in the pricing techniques are observable. For a small number of fixed maturities, we obtain a single broker quote (typically from a market maker). Due to the disclaimers on the quotes that indicate that the price is indicative only, we include these fair value estimates in Level 3. 

Equity securities

Equity securities with active markets are classified within Level 1 as fair values are based on quoted market prices. For equity securities in markets which are less active, fair values are based on market valuations and are classified within Level 2. Equity securities for which pricing is unobservable are classified within Level 3.

Short-term investments

Short-term investments, which comprise securities due to mature within one year of the date of purchase that are traded in active markets, are classified within Level 1 as fair values are based on quoted market prices. Securities such as commercial paper and discount notes are classified within Level 2 because these securities are typically not actively traded due to their approaching maturity, and as such, their cost approximates fair value. Short-term investments for which pricing is unobservable are classified within Level 3.

Private equities

Fair values for the majority of Private equities including investments in partially-owned investment companies, investment funds, and limited partnerships are based on their respective NAV and are excluded from the fair value hierarchy table below.

Other investments

Certain of our long-duration contracts are supported by assets that do not qualify for separate account reporting under GAAP. These assets comprise mutual funds, classified within Level 1 in the valuation hierarchy on the same basis as other equity securities traded in active markets. Other investments principally include fixed maturities carried at fair value with changes in fair value recorded through the Consolidated statements of operations. These fixed maturities principally relate to the acquired Huatai investment portfolio and are classified within Level 2. Also included are life insurance policies collateralizing investments held in rabbi trusts maintained by Chubb for deferred compensation plans and supplemental retirement plans. These policies are carried at cash surrender value and are classified in the valuation hierarchy within Level 2.

Securities lending collateral

The underlying assets included in Securities lending collateral in the Consolidated balance sheets are fixed maturities which are classified in the valuation hierarchy on the same basis as other fixed maturities. Excluded from the valuation hierarchy is the corresponding liability related to Chubb’s obligation to return the collateral plus interest as it is reported at contract value and not fair value in the Consolidated balance sheets.

Investment derivatives

Actively traded investment derivative instruments, including futures, options, and forward contracts are classified within Level 1 as fair values are based on quoted market prices. The fair value of cross-currency swaps and interest rate swaps is based on market valuations and is classified within Level 2. Investment derivative instruments are recorded in either Other assets or Accounts payable, accrued expenses, and other liabilities in the Consolidated balance sheets.

23

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

Derivatives designated as hedging instruments

Certain of our derivatives are cross-currency swaps designated as fair value and net investment hedging instruments. The fair value of cross-currency swaps and interest rate swaps is based on market valuations and is classified within Level 2. Investment derivative instruments are recorded in either Other assets or Accounts payable, accrued expenses, and other liabilities in the Consolidated balance sheets.

Other derivative instruments

We maintain positions in exchange-traded equity futures contracts designed to limit exposure to a severe equity market decline, which would cause an increase in expected claims and, therefore, an increase in market risk benefits (MRB) reserves and our MRB reinsurance business. Our positions in exchange-traded equity futures contracts are classified within Level 1. The fair value of the majority of the remaining positions in other derivative instruments is based on significant observable inputs including equity security and interest rate indices. Accordingly, these are classified within Level 2. Other derivative instruments based on unobservable inputs are classified within Level 3. Other derivative instruments are recorded in either Other assets or Accounts payable, accrued expenses, and other liabilities in the Consolidated balance sheets.

Separate account assets

Separate account assets represent segregated funds where investment risks are borne by the customers, except to the extent of certain guarantees made by Chubb. Separate account assets principally comprise mutual funds classified within Level 1 in the valuation hierarchy on the same basis as other equity securities traded in active markets. Separate account assets also include fixed maturities classified within Level 2 because the most significant inputs used in the pricing techniques are observable. Excluded from the valuation hierarchy are the corresponding liabilities as they are reported at contract value and not fair value in the Consolidated balance sheets.

24

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

Financial instruments measured at fair value on a recurring basis, by valuation hierarchy

September 30, 2023	Level 1		Level 2		Level 3		Total
(in millions of U.S. dollars)
Assets:
Fixed maturities available for sale
U.S. Treasury / Agency	$	3,084	$	597	$	—	$	3,681
Non-U.S.	—		32,084		633		32,717
Corporate and asset-backed securities	—		38,286		2,569		40,855
Mortgage-backed securities	—		19,580		25		19,605
Municipal	—		2,908		—		2,908
	3,084		93,455		3,227		99,766
Equity securities	3,310		—		85		3,395
Short-term investments	2,546		2,906		2		5,454
Other investments (1)	569		4,364		—		4,933
Securities lending collateral	—		1,469		—		1,469
Investment derivatives	42		—		—		42
Derivatives designated as hedging instruments	—		48		—		48
Other derivative instruments	53		—		—		53
Separate account assets	5,217		89		—		5,306
Total assets measured at fair value (1)(2)	$	14,821	$	102,331	$	3,314	$	120,466
Liabilities:
Investment derivatives	$	168	$	—	$	—	$	168
Derivatives designated as hedging instruments	—		68		—		68
Other derivative instruments	—		4		—		4
Market risk benefits (3)	—		—		770		770
Total liabilities measured at fair value	$	168	$	72	$	770	$	1,010

(1)Excluded from the table above are policy loans of $603 million, and other investments of $47 million at September 30, 2023, measured using NAV as a practical expedient.

(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $13,362 million at September 30, 2023, measured using NAV as a practical expedient.

(3)Refer to Note 11 for additional information on Market risk benefits.

25

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

December 31, 2022	Level 1		Level 2		Level 3		Total
(in millions of U.S. dollars)
Assets:
Fixed maturities available for sale
U.S. Treasury / Agency	$	2,100	$	526	$	—	$	2,626
Non-U.S.	—		25,344		564		25,908
Corporate and asset-backed securities	—		34,506		2,449		36,955
Mortgage-backed securities	—		15,840		11		15,851
Municipal	—		3,880		—		3,880
	2,100		80,096		3,024		85,220
Equity securities	737		—		90		827
Short-term investments	3,108		1,849		3		4,960
Other investments (1)	552		399		—		951
Securities lending collateral	—		1,523		—		1,523
Investment derivative instruments	82		—		—		82
Derivatives designated as hedging instruments	—		17		—		17
Other derivative instruments	33		—		—		33
Separate account assets	5,101		89		—		5,190
Total assets measured at fair value (1)(2)	$	11,713	$	83,973	$	3,117	$	98,803
Liabilities:
Investment derivatives	$	139	$	—	$	—	$	139
Derivatives designated as hedging instruments	—		53		—		53
Market risk benefits (3)	—		—		800		800
Total liabilities measured at fair value	$	139	$	53	$	800	$	992

(1)Excluded from the table above are policy loans of $343 million and other investments of $47 million at December 31, 2022, measured using NAV as a practical expedient.

(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $12,355 million at December 31, 2022, measured using NAV as a practical expedient.

(3)Refer to Note 11 for additional information on Market risk benefits.

26

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

Level 3 financial instruments

The following tables present a reconciliation of the beginning and ending balances of financial instruments measured at fair value using significant unobservable inputs (Level 3). Excluded from the following tables is the reconciliation of Market risk benefits, refer to Note 11 for additional information:

Three Months Ended September 30, 2023 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities		Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities
Balance, beginning of period	$	649	$	2,524	$	10	$	86	$	3
Transfers into Level 3	—		—		—		—		—
Transfers out of Level 3	(22)		(10)		—		—		—
Change in Net Unrealized Gains/Losses in OCI	(6)		6		—		—		—
Net Realized Gains/Losses	(2)		(4)		—		—		—
Purchases	46		158		16		4		—
Sales	(17)		(40)		—		(5)		(1)
Settlements	(15)		(65)		(1)		—		—
Balance, end of period	$	633	$	2,569	$	25	$	85	$	2
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(1)	$	(4)	$	—	$	—	$	—
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	(8)	$	4	$	—	$	—	$	—

Three Months Ended September 30, 2022 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities		Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities
Balance, beginning of period	$	549	$	2,261	$	19	$	81	$	9
Transfers into Level 3	—		2		—		—		—
Transfers out of Level 3	—		(4)		—		—		—
Change in Net Unrealized Gains/Losses in OCI	(34)		(16)		—		—		—
Net Realized Gains/Losses	(4)		(9)		—		3		(1)
Purchases	39		164		4		3		1
Sales	(19)		(8)		—		(4)		—
Settlements	(25)		(94)		(4)		—		(6)
Balance, end of period	$	506	$	2,296	$	19	$	83	$	3
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(1)	$	(3)	$	—	$	3	$	(1)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	(35)	$	(19)	$	—	$	—	$	—

27

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

Nine Months Ended September 30, 2023 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities		Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities
Balance, beginning of period	$	564	$	2,449	$	11	$	90	$	3
Transfers into Level 3	21		3		—		—		—
Transfers out of Level 3	(22)		(23)		—		—		—
Change in Net Unrealized Gains/Losses in OCI	5		8		—		—		(1)
Net Realized Gains/Losses	(3)		(7)		—		(6)		—
Purchases	151		481		16		15		3
Sales	(52)		(70)		—		(14)		(3)
Settlements	(31)		(272)		(2)		—		—
Balance, end of period	$	633	$	2,569	$	25	$	85	$	2
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(1)	$	(6)	$	—	$	(6)	$	—
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	1	$	2	$	—	$	—	$	—

Nine Months Ended September 30, 2022 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities		Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities
Balance, beginning of period	$	633	$	2,049	$	26	$	77	$	7
Transfers into Level 3	23		41		—		1		—
Transfers out of Level 3	(23)		(97)		(5)		—		—
Change in Net Unrealized Gains/Losses in OCI	(88)		(68)		—		—		—
Net Realized Gains/Losses	(6)		(9)		—		7		(1)
Purchases	108		658		4		6		8
Sales	(44)		(59)		—		(8)		—
Settlements	(97)		(219)		(6)		—		(11)
Balance, end of period	$	506	$	2,296	$	19	$	83	$	3
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(3)	$	(4)	$	—	$	6	$	(1)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	(89)	$	(71)	$	—	$	—	$	—

b) Financial instruments disclosed, but not measured, at fair value

Chubb uses various financial instruments in the normal course of its business. Our insurance contracts are excluded from fair value of financial instruments accounting guidance, and therefore, are not included in the amounts discussed below.

The carrying values of cash, other assets, other liabilities, and other financial instruments not included below approximated their fair values. Refer to the 2022 Form 10-K for information on the fair value methods and assumptions for investments in partially-owned insurance companies, short-term and long-term debt, repurchase agreements, and trust-preferred securities.

28

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The following tables present fair value, by valuation hierarchy, and carrying value of the financial instruments not measured at fair value:

September 30, 2023	Fair Value								Net Carrying Value
(in millions of U.S. dollars)	Level 1		Level 2		Level 3		Total
Assets:
Private debt held-for-investment	$	—	$	—	$	2,389	$	2,389	$	2,401
Total assets	$	—	$	—	$	2,389	$	2,389	$	2,401
Liabilities:
Repurchase agreements	$	—	$	2,617	$	—	$	2,617	$	2,617
Short-term debt	—		688		—		688		700
Long-term debt	—		11,627		—		11,627		13,736
Trust preferred securities	—		362		—		362		308
Total liabilities	$	—	$	15,294	$	—	$	15,294	$	17,361

Private debt held-for-investment is related to Huatai and its consolidation. The fair value of Private debt held-for-investment is derived using a discounted cash flow approach, which includes an evaluation of forecasted contractual cash flows and yield curve information, among other loan characteristics and assumptions. These assumptions are derived from internal and third party sources. Since the valuation is derived from model-based techniques, Private debt held-for-investment is classified within Level 3 of the valuation hierarchy.

December 31, 2022	Fair Value								Net Carrying Value
(in millions of U.S. dollars)	Level 1		Level 2		Level 3		Total
Assets:
Fixed maturities held to maturity
U.S. Treasury / Agency	$	1,299	$	71	$	—	$	1,370	$	1,417
Non-U.S.	—		1,054		—		1,054		1,136
Corporate and asset-backed securities	—		1,580		—		1,580		1,705
Mortgage-backed securities	—		1,351		—		1,351		1,455
Municipal	—		3,084		—		3,084		3,135
Total assets	$	1,299	$	7,140	$	—	$	8,439	$	8,848
Liabilities:
Repurchase agreements	$	—	$	1,419	$	—	$	1,419	$	1,419
Short-term debt	—		473		—		473		475
Long-term debt	—		12,495		—		12,495		14,402
Trust preferred securities	—		383		—		383		308
Total liabilities	$	—	$	14,770	$	—	$	14,770	$	16,604

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

5. Reinsurance

Reinsurance recoverable on ceded reinsurance

	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)	Net Reinsurance Recoverable (1)		Valuation allowance		Net Reinsurance Recoverable (1)		Valuation allowance
Reinsurance recoverable on unpaid losses and loss expenses	$	17,808	$	318	$	17,086	$	289
Reinsurance recoverable on paid losses and loss expenses	1,942		52		1,773		62
Reinsurance recoverable on losses and loss expenses	$	19,750	$	370	$	18,859	$	351
Reinsurance recoverable on policy benefits	$	315	$	1	$	302	$	4

(1)Net of valuation allowance for uncollectible reinsurance.

The increase in reinsurance recoverable on losses and loss expenses was primarily due to the consolidation of Huatai and unfavorable prior period development on ceded reserves.

The following table presents a roll-forward of valuation allowance for uncollectible reinsurance related to Reinsurance recoverable on loss and loss expenses:

	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023		2022
Valuation allowance for uncollectible reinsurance - beginning of period	$	351	$	329
Provision for uncollectible reinsurance	27		30
Write-offs charged against the valuation allowance	(8)		(4)
Foreign exchange revaluation	—		(3)
Valuation allowance for uncollectible reinsurance - end of period	$	370	$	352

For additional information, refer to Note 1 d) to the Consolidated Financial Statements of our 2022 Form 10-K.

6. Deferred acquisition costs

Deferred acquisition costs comprise capitalized costs on short-duration contracts of $3,283 million and $2,809 million and long-duration contracts of $3,573 million and $2,979 million at September 30, 2023, and September 30, 2022, respectively. The assumptions used to amortize DAC were consistent with the assumptions used to estimate the liability for future policy benefits for nonparticipating traditional and limited-payment contracts.

The following tables present a roll-forward of deferred acquisitions costs on long-duration contracts included in the Life Insurance segment:

	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Term Life		Universal Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	320	$	776	$	395	$	902	$	121	$	2,514
Capitalizations	118		85		102		392		25		722
Amortization expense	(74)		(57)		(16)		(100)		(15)		(262)
Other (including foreign exchange)	8		(20)		7		(13)		(4)		(22)
Balance - end of period	$	372	$	784	$	488	$	1,181	$	127	$	2,952
Overseas General Insurance segment excluded from table											621
Total deferred acquisition costs on long-duration contracts											$	3,573

30

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Term Life		Universal Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	246	$	771	$	334	$	745	$	108	$	2,204
Capitalizations	111		95		46		166		39		457
Amortization expense	(56)		(55)		(14)		(72)		(16)		(213)
Other (including foreign exchange)	(2)		(50)		(16)		(20)		(14)		(102)
Balance - end of period	$	299	$	761	$	350	$	819	$	117	$	2,346
Overseas General Insurance segment excluded from table											633
Total deferred acquisition costs on long-duration contracts											$	2,979

31

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

7. Goodwill, Value of business acquired, and Other intangible assets

Goodwill

The following table presents a roll-forward of Goodwill by segment:

(in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Chubb Consolidated
Balance at December 31, 2022	$	6,945	$	2,230	$	134	$	4,605	$	371	$	1,943	$	16,228
Consolidation of Huatai Group (1)	—		—		—		562		—		2,832		3,394
Foreign exchange revaluation and other	—		—		—		44		—		(112)		(68)
Balance at September 30, 2023	$	6,945	$	2,230	$	134	$	5,211	$	371	$	4,663	$	19,554

(1)Includes $1.0 billion attributable to noncontrolling interests.

Value of business acquired

Value of business acquired (VOBA) represents the fair value of the future profits of in-force long duration contracts from businesses acquired, principally Cigna's Asian business, and is amortized in relation to the profit emergence of the underlying contracts. The VOBA calculation is based on many factors including mortality, morbidity, persistency, investment yields, expenses, and the discount rate, with the discount rate being the most significant factor.

The following table presents a roll-forward of VOBA:

	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023
Balance, beginning of period	$	3,702
Consolidation of Huatai Group	309
Amortization of VOBA (1)	(235)
Foreign exchange revaluation and other	(101)
Balance, end of period	$	3,675

(1)Recognized in Policy acquisition costs in the Consolidated statements of operations.

The following table presents, as of September 30, 2023, the expected estimated pre-tax amortization expense related to VOBA at current foreign currency rates, for the fourth quarter of 2023 and for the next five years:

For the Years Ending December 31 (in millions of U.S. dollars)	Total amortization of VOBA
Fourth quarter of 2023	$	67
2024	270
2025	230
2026	202
2027	181
2028	165
Total	$	1,115

32

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

Other intangible assets

Other intangible assets that are subject to amortization principally relate to agency distribution relationships, renewal rights, and patents. Other intangible assets that are not subject to amortization principally relate to trademarks. For other intangible assets related to the consolidation of Huatai, refer to Note 2.

(in millions of U.S. dollars)	September 30 2023		December 31 2022
Subject to amortization	$	3,350	$	2,459
Not subject to amortization	3,494		2,982
Total	$	6,844	$	5,441

The following table presents, as of September 30, 2023, the expected pre-tax amortization expense of purchased intangibles, at current foreign currency exchange rates, for the fourth quarter of 2023 and for the next five years:

For the Years Ending December 31 (in millions of U.S. dollars)	Total amortization of purchased intangibles		Amortization of Huatai UPR intangible asset (1)		Amortization of Huatai land use rights (2)		Total amortization
Fourth quarter of 2023	$	84	$	16	$	3	$	103
2024	312		30		12		354
2025	286		16		12		314
2026	269		7		12		288
2027	249		3		13		265
2028	240		—		13		253
Total	$	1,440	$	72	$	65	$	1,577

(1)Recognized in Policy acquisition costs in the Consolidated statements of operations.

(2)Recognized in Other (income) expense in the Consolidated statements of operations.

33

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

8. Unpaid losses and loss expenses

The following table presents a reconciliation of beginning and ending Unpaid losses and loss expenses:

	Nine Months Ended
	September 30
	2023		2022
(in millions of U.S. dollars)			As Adjusted
Gross unpaid losses and loss expenses – beginning of period	$	75,747	$	72,330
Reinsurance recoverable on unpaid losses – beginning of period (1)	(17,086)		(16,132)
Net unpaid losses and loss expenses – beginning of period	58,661		56,198
Net losses and loss expenses incurred in respect of losses occurring in:
Current year	18,604		17,755
Prior years (2)	(667)		(922)
Total	17,937		16,833
Net losses and loss expenses paid in respect of losses occurring in:
Current year	4,853		4,511
Prior years	10,158		9,217
Total	15,011		13,728
Consolidation of Huatai Group	405		—
Foreign currency revaluation and other	(95)		(1,280)
Net unpaid losses and loss expenses – end of period	61,897		58,023
Reinsurance recoverable on unpaid losses (1)	17,808		17,313
Gross unpaid losses and loss expenses – end of period	$	79,705	$	75,336

(1)    Net of valuation allowance for uncollectible reinsurance.

(2)    Relates to prior period loss reserve development only and excludes prior period development related to reinstatement premiums, expense adjustments, earned premiums, and development on international A&H lines totaling $71 million and $213 million for the nine months ended September 30, 2023 and 2022, respectively.

Gross and net unpaid losses and loss expenses increased $4.0 billion and $3.2 billion for the nine months ended September 30, 2023, respectively, principally reflecting underlying exposure growth and the consolidation of Huatai. The increase in net unpaid losses also reflected seasonality in our crop insurance business. This increase was partially offset by favorable prior period development and by large payments related to the Boy Scouts of America.

34

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

Prior Period Development

Prior period development (PPD) arises from changes to loss estimates recognized in the current year that relate to loss events that occurred in previous calendar years and excludes the effect of losses from the development of earned premium from previous accident years. Long-tail lines include lines such as workers' compensation, general liability, and financial lines; while short-tail lines include lines such as most property lines, energy, personal accident, and agriculture.

The following table summarizes (favorable) and adverse PPD by segment:

	Three Months Ended September 30						Nine Months Ended September 30
(in millions of U.S. dollars)	Long-tail		Short-tail		Total		Long-tail		Short-tail		Total
2023
North America Commercial P&C Insurance	$	107	$	(191)	$	(84)	$	(23)	$	(279)	$	(302)
North America Personal P&C Insurance	—		(119)		(119)		—		(135)		(135)
North America Agricultural Insurance	—		(9)		(9)		—		(12)		(12)
Overseas General Insurance	(52)		3		(49)		(52)		(201)		(253)
Global Reinsurance	—		—		—		7		(32)		(25)
Corporate	61		—		61		131		—		131
Total	$	116	$	(316)	$	(200)	$	63	$	(659)	$	(596)
2022
North America Commercial P&C Insurance	$	(29)	$	(137)	$	(166)	$	(315)	$	(246)	$	(561)
North America Personal P&C Insurance	—		(133)		(133)		—		(187)		(187)
North America Agricultural Insurance	—		9		9		—		(17)		(17)
Overseas General Insurance	(5)		—		(5)		(5)		(233)		(238)
Global Reinsurance	—		—		—		(7)		29		22
Corporate	73		—		73		272		—		272
Total	$	39	$	(261)	$	(222)	$	(55)	$	(654)	$	(709)

Significant prior period movements by segment, principally driven by reserve reviews completed during each respective period, are discussed in more detail below. The remaining net development for long-tail lines and short-tail business for each segment and Corporate comprises numerous favorable and adverse movements across a number of lines and accident years, none of which is significant individually or in the aggregate.

North America Commercial P&C Insurance. Net favorable development for the three months ended September 30, 2023 included $71 million in workers' compensation lines, mainly due to lower than expected loss experience, and $188 million in commercial property and marine lines, mainly due to net lower than expected development impacting the most recent accident years. The favorable development was partially offset by adverse development of $222 million in commercial excess and umbrella lines, driven by higher than expected loss development, principally related to automobile exposures.

Net favorable development for the nine months ended September 30, 2023 included $379 million in workers' compensation lines, $113 million in commercial property and marine lines, and $101 million in surety, all mainly driven by lower than expected development. These favorable movements were partially offset by adverse development of $227 million in commercial excess and umbrella lines and $125 million in commercial auto liability, both driven by higher than expected loss experience.

35

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

Net favorable development for the three months ended September 30, 2022 included $164 million from lower than expected loss experience in workers’ compensation lines and $66 million, net of premium adjustments, from lower claims activity in large multi-line loss sensitive accounts. The favorable development was partially offset by net adverse development of $58 million from higher than expected claims severity in commercial auto liability, and $71 million in commercial umbrella/excess portfolios. Net favorable development on our short-tail businesses primarily included $132 million in property and marine portfolios, where paid and reported loss activity for the most recent accident years was lower than expected. Net favorable development for the nine months ended September 30, 2022 also included favorable development in workers’ compensation lines due to updates to loss development factors and our annual assessment of multi-claimant events, including industrial accidents.

North America Personal P&C Insurance. Net favorable development for the three and nine months ended September 30, 2023 included $263 million and $244 million, respectively, in homeowners and valuables lines, mainly due to lower than expected loss experience in accident year 2022. The favorable development was partially offset by net adverse development of $145 million in the three months ended September 30, 2023 in personal excess liability due to adverse development on reported losses.

Net favorable development for the three and nine months ended September 30, 2022 included favorable development in the homeowners and valuables lines of business, driven by lower than expected claims reserve development.

Overseas General Insurance. Net favorable development for the three months ended September 30, 2023 included favorable loss emergence in financial lines of $77 million primarily in accident years 2019 and prior of partially offset by net adverse development of $51 million in political risks. Net favorable development for the nine months ended September 30, 2023, also included net favorable development of $147 million in property and marine lines, and $45 million in A&H lines.

Net favorable development for the three months ended September 30, 2022, included lower than expected paid and reported loss activity of $82 million in casualty lines, including primary and excess lines in Continental Europe, the U.K., and Asia Pacific, and $34 million in environmental lines. The favorable development was partially offset by net adverse development of $114 million in financial lines, including Directors and Officers (D&O) due to a combination of higher than expected development on specific claims and increased expected future development in the U.K., Continental Europe, Asia Pacific, and London wholesale business. Net favorable development for the nine months ended September 30, 2022, also included net favorable development of $75 million in A&H lines, $67 million in property lines, and $53 million in personal lines.

Corporate. Net adverse development for the three months ended September 30, 2023 and 2022, included adverse development for environmental liabilities. Net adverse development for the nine months ended September 30, 2023 and 2022 also included adverse development for molestation claims of $49 million and $155 million, respectively.

36

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

9. Future policy benefits

The following tables present a roll-forward of the liability for future policy benefits included in the Life Insurance segment:

Present Value of Expected Net Premiums	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	818	$	2,301	$	9,863	$	42	$	13,024
Beginning balance at original discount rate	879		2,354		10,409		43		13,685
Effect of changes in cash flow assumptions	35		40		(811)		2		(734)
Effect of actual variances from expected experience	(13)		6		(120)		—		(127)
Adjusted beginning of period balance	901		2,400		9,478		45		12,824
Consolidation of Huatai Group	3		1,690		145		12		1,850
Issuances	90		274		1,066		5		1,435
Interest accrual	45		62		421		1		529
Net premiums collected (1)	(127)		(375)		(998)		(15)		(1,515)
Other (including foreign exchange)	(9)		(56)		(212)		18		(259)
Ending balance at original discount rate	903		3,995		9,900		66		14,864
Effect of changes in discount rate assumptions	(69)		(62)		(497)		(1)		(629)
Balance – end of period	$	834	$	3,933	$	9,403	$	65	$	14,235

(1)Net premiums collected represent the portion of gross premiums collected from policyholders that is used to fund expected benefit.

Present Value of Expected Future Policy Benefits	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	1,427	$	6,048	$	14,206	$	239	$	21,920
Beginning balance at original discount rate	1,555		6,225		15,022		250		23,052
Effect of changes in cash flow assumptions	31		44		(848)		3		(770)
Effect of actual variances from expected experience	(10)		12		(114)		—		(112)
Adjusted beginning of period balance	1,576		6,281		14,060		253		22,170
Consolidation of Huatai Group	17		3,659		163		298		4,137
Issuances	90		276		1,065		5		1,436
Interest accrual	54		176		514		6		750
Benefits payments	(119)		(212)		(1,065)		(8)		(1,404)
Other (including foreign exchange)	92		22		(628)		178		(336)
Ending balance at original discount rate	1,710		10,202		14,109		732		26,753
Effect of changes in discount rate assumptions	(152)		(274)		(790)		(11)		(1,227)
Balance – end of period	$	1,558	$	9,928	$	13,319	$	721	$	25,526

37

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

	September 30, 2023
Liability for Future Policy Benefits	Life Insurance								Overseas General Insurance		Chubb Consolidated
(in millions of U.S. dollars, except for years)	Term Life		Whole Life		A&H		Other		A&H		Total
Net liability for future policy benefits	$	724	$	5,995	$	3,916	$	656	$	718	$	12,009
Deferred profit liability	223		707		156		14		—		1,100
Net liability for future policy benefits, per consolidated balance sheet	947		6,702		4,072		670		718		13,109
Less: Reinsurance recoverable on future policy benefits	111		47		103		21		33		315
Net liability for future policy benefits, after reinsurance recoverable	$	836	$	6,655	$	3,969	$	649	$	685	$	12,794
Weighted-average duration (years)	10.2		26.5		10.3		15.1		4.9		18.7

Present Value of Expected Net Premiums	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	422	$	1,341	$	2,520	$	30	$	4,313
Beginning balance at original discount rate	397		1,243		2,323		28		3,991
Effect of changes in cash flow assumptions	—		(3)		(29)		—		(32)
Effect of actuarial variances from expected experience	(31)		12		(120)		—		(139)
Adjusted beginning of period balance	366		1,252		2,174		28		3,820
Acquisition of Cigna	445		1,078		8,191		23		9,737
Issuances	95		155		348		3		601
Interest accrual	45		37		184		1		267
Net premiums collected (1)	(93)		(156)		(445)		(9)		(703)
Other (including foreign exchange)	(46)		(102)		(487)		(4)		(639)
Ending balance at original discount rate	812		2,264		9,965		42		13,083
Effect of changes in discount rate assumptions	(59)		(95)		(531)		(1)		(686)
Balance – end of period	$	753	$	2,169	$	9,434	$	41	$	12,397

(1)Net premiums collected represent the portion of gross premiums collected from policyholders that is used to fund expected benefit.

38

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

Present Value of Expected Future Policy Benefits	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	921	$	4,785	$	4,939	$	130	$	10,775
Beginning balance at original discount rate	858		3,833		4,589		122		9,402
Effect of changes in cash flow assumptions	(5)		(3)		(41)		11		(38)
Effect of actuarial variances from expected experience	(32)		14		(126)		—		(144)
Adjusted beginning of period balance	821		3,844		4,422		133		9,220
Acquisition of Cigna	668		2,267		10,542		106		13,583
Issuances	100		155		348		3		606
Interest accrual	52		123		242		3		420
Benefits payments	(82)		(151)		(469)		(2)		(704)
Other (including foreign exchange)	(112)		(207)		(651)		(102)		(1,072)
Ending balance at original discount rate	1,447		6,031		14,434		141		22,053
Effect of changes in discount rate assumptions	(126)		(308)		(790)		(16)		(1,240)
Balance – end of period	$	1,321	$	5,723	$	13,644	$	125	$	20,813

	September 30, 2022
Liability for Future Policy Benefits	Life Insurance								Overseas General Insurance		Chubb Consolidated
(in millions of U.S. dollars, except for years)	Term Life		Whole Life		A&H		Other		A&H		Total
Net liability for future policy benefits	$	568	$	3,554	$	4,210	$	84	$	735	$	9,151
Deferred profit liability	172		450		125		8		—		755
Net liability for future policy benefits, per consolidated balance sheet	740		4,004		4,335		92		735		9,906
Less: Reinsurance recoverable on future policy benefits	111		56		107		—		38		312
Net liability for future policy benefits, after reinsurance recoverable	$	629	$	3,948	$	4,228	$	92	$	697	$	9,594
Weighted-average duration (years)	9.0		24.7		11.0		13.5		5.1		16.2

39

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The following table presents the amount of undiscounted expected gross premiums and expected future policy benefit payments included in the Life Insurance segment:

	September 30		September 30
(in millions of U.S. dollars)	2023		2022
Term Life
Undiscounted expected future benefit payments	$	2,492	$	2,189
Undiscounted expected future gross premiums	$	2,884	$	2,503
Discounted expected future benefit payments	$	1,558	$	1,321
Discounted expected future gross premiums	$	1,910	$	1,682
Whole Life
Undiscounted expected future benefit payments	$	23,457	$	15,631
Undiscounted expected future gross premiums	$	9,478	$	6,654
Discounted expected future benefit payments	$	9,928	$	5,723
Discounted expected future gross premiums	$	7,654	$	5,173
A&H
Undiscounted expected future benefit payments	$	23,168	$	23,873
Undiscounted expected future gross premiums	$	34,055	$	34,659
Discounted expected future benefit payments	$	13,319	$	13,644
Discounted expected future gross premiums	$	20,604	$	20,193
Other
Undiscounted expected future benefit payments	$	977	$	265
Undiscounted expected future gross premiums	$	103	$	102
Discounted expected future benefit payments	$	721	$	125
Discounted expected future gross premiums	$	92	$	92

The following table presents the amount of revenue and interest recognized in the statement of operations:

	Gross Premiums or Assessments				Interest Accretion
	Nine Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Life Insurance
Term Life	$	511	$	361	$	9	$	7
Whole Life	858		411		114		86
A&H	2,171		1,226		93		58
Other	54		71		5		2
Overseas General Insurance
A&H	1,175		1,075		—		—
Total	$	4,769	$	3,144	$	221	$	153

40

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The following table presents the weighted-average interest rates:

	Interest Accretion Rate				Current Discount Rate
	September 30				September 30
	2023		2022		2023		2022
Life Insurance
Term Life	2.9	%	2.6	%	6.0	%	6.1	%
Whole Life	3.2	%	3.9	%	4.7	%	5.5	%
A&H	3.7	%	3.6	%	6.7	%	6.1	%
Other	2.6	%	3.7	%	4.3	%	6.2	%

10. Policyholders' account balances

The following tables present a roll-forward of policyholders' account balances:

	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Universal Life		Other		Total
Balance – beginning of period	$	1,719	$	1,421	$	3,140
Consolidation of Huatai Group	602		3,412		4,014
Premiums received	275		228		503
Policy charges (1)	(135)		(8)		(143)
Surrenders and withdrawals	(69)		(113)		(182)
Benefit payments	(6)		(81)		(87)
Interest credited	39		43		82
Other (including foreign exchange)	(42)		(107)		(149)
Balance, end of period	$	2,383	$	4,795	$	7,178

	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Universal Life		Other		Total
Balance – beginning of period	$	1,612	$	1,154	$	2,766
Acquisition of Cigna	10		345		355
Premiums received	292		55		347
Policy charges (1)	(141)		(8)		(149)
Surrenders and withdrawals	(55)		(39)		(94)
Benefit payments	(3)		(15)		(18)
Interest credited	30		25		55
Other (including foreign exchange)	(69)		(185)		(254)
Balance, end of period	$	1,676	$	1,332	$	3,008

(1)Contracts included in the policyholder account balances are generally charged a premium and/or monthly assessments on the basis of the account balance.

41

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

	September 30
	2023						2022
(in millions of U.S. dollars, except for percentages)	Universal Life			Other			Universal Life			Other
Weighted-average crediting rate	3.8		%	2.1		%	3.7		%	2.6		%
Net amount at risk (1)	$	10,493		$	1,675		$	10,116		$	1,503
Cash Surrender Value	$	1,596		$	3,655		$	934		$	1,280

(1)For those guarantees of benefits that are payable in the event of death, the net amount at risk is defined as the current guaranteed minimum death benefit in excess of the current account balance at the balance sheet date.

The following tables present the balance of account values by range of guaranteed minimum crediting rates and the related range of difference, in basis points, between rates being credited to policyholders and the respective guaranteed minimum:

Universal Life

	September 30, 2023
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	3	$	—	$	56	$	563	$	622
2.01% – 4.00%	472		377		558		333		1,740
Greater than 4.00%	21		—		—		—		21
Total	$	496	$	377	$	614	$	896	$	2,383

	September 30, 2022
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	3	$	—	$	59	$	505	$	567
2.01% – 4.00%	456		394		228		—		1,078
Greater than 4.00%	31		—		—		—		31
Total	$	490	$	394	$	287	$	505	$	1,676

Other policyholders' account balances

	September 30, 2023
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	1,328	$	—	$	1,719	$	799	$	3,846
2.01% – 4.00%	112		487		27		—		626
Greater than 4.00%	323		—		—		—		323
Total	$	1,763	$	487	$	1,746	$	799	$	4,795

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

	September 30, 2022
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	411	$	—	$	191	$	424	$	1,026
2.01% – 4.00%	—		—		—		—		—
Greater than 4.00%	306		—		—		—		306
Total	$	717	$	—	$	191	$	424	$	1,332

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

11. Market risk benefits

Our reinsurance programs covering variable annuity guarantees, comprising guaranteed living benefits (GLB) and guaranteed minimum death benefits (GMDB), meet the definition of Market risk benefits (MRB). The following table presents a roll-forward of MRB:

	Nine Months Ended September 30
(in millions of U.S. dollars)	2023		2022
Balance – beginning of period	$	800	$	812
Balance, beginning of period, before effect of changes in the instrument-specific credit risk	776		755
Interest rate changes	(117)		(561)
Effect of changes in equity markets	(69)		633
Effect of changes in volatilities	51		14
Effect of changes in future expected policyholder behavior	89		40
Effect of timing and all other	19		(29)
Balance, end of period, before effect of changes in the instrument-specific credit risk	$	749	$	852
Effect of changes in the instrument-specific credit risk	21		9
Balance – end of period	$	770	$	861
Weighted-average age of policyholders (years)	73		73
Net amount at risk	$	2,138	$	2,885

Excluded from the table above are MRB gains (losses) of $(181) million and $186 million for the nine months ended September 30, 2023 and 2022, respectively, reported in the Consolidated statements of operations, relating to the market risk benefits' economic hedge and other net cash flows. There is no reinsurance recoverable associated with our liability for MRB.

In the third quarter of 2023, we completed a review of policyholder behavior related to annuitizations, partial withdrawals, lapses, and mortality for our variable annuity reinsurance business.

•As annuitization and partial withdrawal experience continued to emerge, we refined our assumptions for an additional year of data. The annuitization assumption updates included treaty-based and age-based behavior, as well as a refresh of our annuitization rates which depend on the value of the guarantees. These refinements resulted in a net increase of approximately $92 million to the MRB fair value, recognized as a Market risk benefits loss.

•We also refined our lapse and mortality assumptions based on additional emerging experience. The changes had an insignificant impact on the MRB fair value.

For MRB, Chubb estimates fair value using an internal valuation model which includes a number of factors including interest rates, equity markets, credit risk, current account value, market volatility, expected annuitization rates and other policyholder behavior, and changes in policyholder mortality. All reinsurance treaties contain claim limits, which are also factored into the valuation model.

	Valuation Technique	Significant Unobservable Inputs	September 30, 2023			September 30, 2022
			Ranges	Weighted Average(1)		Ranges	Weighted Average(1)
MRB (1)	Actuarial model	Lapse rate	0.5% – 30%	4.0	%	0.5% – 30.4%	3.8	%
		Annuitization rate	0% – 100%	4.8	%	0% – 100%	4.6	%

(1)The weighted-average lapse and annuitization rates are determined by weighting each treaty's rates by the MRB contract's fair value.

The most significant policyholder behavior assumptions include lapse rates for MRBs, and GLB annuitization rates. Assumptions regarding lapse rates and GLB annuitization rates differ by treaty, but the underlying methodologies to determine rates applied to each treaty are comparable.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

A lapse rate is the percentage of in-force policies surrendered in a given calendar year. All else equal, as lapse rates increase, ultimate claim payments will decrease. In general, the base lapse function assumes low lapse rates during the surrender charge period, followed by a "spike" lapse rate in the year immediately following the surrender charge period, and then reverting to an ultimate lapse rate, typically over a 2-year period. This base rate is adjusted downward for policies with more valuable guarantees (policies with guaranteed values far in excess of their account values). Partial withdrawals and the impact of older policyholders with tax-qualified contracts (due to required minimum distributions) are also reflected in our modeling.

The GLB annuitization rate is the percentage of policies for which the policyholder will elect to annuitize using the guaranteed benefit provided under the GLB. All else equal, as GLB annuitization rates increase, ultimate claim payments will increase, subject to treaty claim limits. All GLB reinsurance treaties include claim limits to protect Chubb in the event that actual annuitization behavior is significantly higher than expected. In general, Chubb assumes that GLB annuitization rates will be higher for policies with more valuable guarantees (policies with guaranteed values far in excess of their account values). Chubb also assumes that GLB annuitization rates increase as policyholders get older. In addition, it is also assumed that GLB annuitization rates are higher in the first year immediately following the waiting period (the first year the policies are eligible to annuitize using the GLB) in comparison to all subsequent years. Chubb does not yet have fully credible annuitization experience for all clients.

The effect of changes in key market factors on assumed lapse and annuitization rates reflect emerging trends using data available from cedants. For treaties with limited experience, rates are established by blending the experience with data received from other ceding companies. The model and related assumptions are regularly re-evaluated by management and enhanced, as appropriate, based upon additional experience obtained related to policyholder behavior and availability of updated information such as market conditions, market participant assumptions, and demographics of in-force annuities.

12. Separate accounts

Separate account assets represent segregated funds where investment risks are borne by the customers, except to the extent of certain guarantees made by Chubb. The assets that support variable contracts are measured at fair value and are reported as Separate account assets and corresponding liabilities are reported within Separate account liabilities on the Consolidated balance sheets. Policy charges assessed against the policyholders for mortality, administration, and other services are included in Net premiums earned on the Consolidated statements of operations.

The following table presents the aggregate fair value of Separate account assets, by major security type:

	September 30		December 31
(in millions of U.S. dollars)	2023		2022
Cash and cash equivalents	$	88	$	141
Mutual funds	5,129		4,960
Fixed maturities	89		89
Total	$	5,306	$	5,190

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The following table presents a roll-forward of separate account liabilities:

	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023		2022
Balance – beginning of period	$	5,190	$	5,560
Acquisition of Cigna	—		301
Premiums and deposits	724		1,147
Policy charges	(103)		(93)
Surrenders and withdrawals	(407)		(304)
Benefit payments	(291)		(289)
Investment performance	382		(978)
Other (including foreign exchange)	(189)		(453)
Balance – end of period	$	5,306	$	4,891
Cash surrender value (1)	$	5,285	$	4,771

(1) Cash surrender value represents the amount of the contract holder's account balances distributable at the balance sheet date less certain surrender charges.

13. Commitments, contingencies, and guarantees

a) Derivative instruments

Chubb maintains positions in derivative instruments such as futures, options, swaps, and foreign currency forward contracts for which the primary purposes are to manage duration and foreign currency exposure, yield enhancement, or to obtain an exposure to a particular financial market. Chubb also maintains positions in convertible securities that contain embedded derivatives, and exchange-traded equity futures contracts on equity market indices to limit equity exposure in the MRB book of business. Investment derivative instruments and derivatives designated as hedges for accounting purposes are recorded in either Other assets (OA) or Accounts payable, accrued expenses, and other liabilities (AP); convertible bonds are recorded in Fixed maturities available for sale (FM AFS); and convertible equity securities are recorded in Equity securities (ES) in the Consolidated balance sheets. These are the most numerous and frequent derivative transactions. In addition, Chubb, from time to time, purchases to be announced mortgage-backed securities (TBAs) as part of its investing activities.

As a global company, Chubb entities transact business in multiple currencies. Our policy is to generally match assets, liabilities, and required capital for each individual jurisdiction in local currency, which would include the use of derivatives discussed below. Some of Chubb's derivatives satisfy hedge accounting requirements, as discussed below. We also consider economic hedging for planned cross border transactions.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The following table presents the balance sheet location, fair value of derivative instruments in an asset or (liability) position, and notional value/payment provision of our derivative instruments:

				September 30, 2023						December 31, 2022
	Consolidated Balance Sheet Location	Fair Value				Notional Value/ Payment Provision		Fair Value				Notional Value/ Payment Provision
(in millions of U.S. dollars)		Derivative Asset		Derivative (Liability)				Derivative Asset		Derivative (Liability)
Investment and embedded derivatives not designated as hedging instruments:
Foreign currency forward contracts	OA / (AP)	$	15	$	(147)	$	3,711	$	64	$	(115)	$	4,134
Options/Futures contracts on notes and bonds	OA / (AP)	27		(21)		2,150		18		(24)		1,511
Convertible securities (1)	FM AFS / ES	53		—		61		30		—		37
		$	95	$	(168)	$	5,922	$	112	$	(139)	$	5,682
Other derivative instruments:
Futures contracts on equities (2)	OA / (AP)	$	48	$	—	$	1,119	$	33	$	—	$	939
Other	OA / (AP)	5		(4)		368		—		—		—
		$	53	$	(4)	$	1,487	$	33	$	—	$	939
Derivatives designated as hedging instruments:
Cross-currency swaps - fair value hedges	OA / (AP)	$	48	$	—	$	1,609	$	17	$	—	$	1,595
Cross-currency swaps - net investment hedges	OA / (AP)	—		(68)		1,594		—		(53)		1,604
		$	48	$	(68)	$	3,203	$	17	$	(53)	$	3,199

(1)Includes fair value of embedded derivatives.

(2)Related to MRB book of business.

At September 30, 2023, and December 31, 2022, net derivative liabilities of $97 million and $60 million, respectively, included in the table above were subject to a master netting agreement. The remaining derivatives included in the table above were not subject to a master netting agreement.

b) Hedge accounting

We designate certain derivatives as fair value hedges and net investment hedges for accounting purposes to hedge for foreign currency exposure associated with portions of our euro denominated debt and the net investment in certain foreign subsidiaries, respectively. These derivatives comprise cross-currency swaps, which are agreements under which two counterparties exchange interest payments and principal denominated in different currencies at a future date.

(i) Cross-currency swaps - fair value hedges

In September 2022, Chubb entered into certain cross-currency swaps designated as fair value hedges. The objective of these cross-currency swaps is to hedge the foreign currency risk on €1.5 billion, or approximately $1.6 billion at September 30, 2023, of our euro denominated debt, by converting cash flows back into the U.S. dollar.

These fair value hedges are carried at fair value. The hedges are expected to be highly effective, with gains or losses on the fair value hedges offsetting the foreign currency remeasurement on the hedged euro denominated senior notes within Net realized gains (losses). The remaining change in fair value is recorded in Other comprehensive income (OCI), with an immaterial amount recorded in Interest expense.

The following table presents pre-tax gains (losses) recognized in OCI and reclassified into earnings for fair value hedges:

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Gain/(loss) recognized in OCI	$	(17)	$	(94)	$	23	$	(94)
Net realized gain/(loss) reclassified from OCI	(51)		(32)		(20)		(32)
Interest expense reclassified from OCI	(4)		—		(12)		—
OCI gain/(loss) after reclassifications	$	38	$	(62)	$	55	$	(62)

(ii) Cross-currency swaps - net investment hedges

In September 2022, Chubb entered into certain cross-currency swaps designated as net investment hedges. The objective of these cross-currency swaps is to hedge the foreign currency exposure in the net investments of certain foreign subsidiaries by converting cash flows from U.S. dollar to the British pound sterling, Japanese yen, and Swiss franc. The hedged risk is designated as the foreign currency exposure arising between the functional currency of the foreign subsidiary and the functional currency of its parent entity.

These net investment hedges are carried at fair value, with changes in fair value recorded in Cumulative translation adjustments (CTA) within OCI, and an immaterial amount recorded to Interest expense. The mark-to-market adjustments for foreign currency changes will remain until the underlying hedge subsidiary is deconsolidated or if hedge accounting is discontinued.

The following table presents pre-tax gains (losses) recognized in OCI and reclassified into earnings for net investment hedges:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Gain/(loss) recognized in OCI	$	(20)	$	64	$	(8)	$	64
Interest income reclassified from OCI	3		—		10		—
OCI gain/(loss) after reclassifications	$	(23)	$	64	$	(18)	$	64

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

c) Derivative instruments not designated as hedges

Derivative instruments which are not designated as hedges are carried at fair value with changes in fair value recorded in Net realized gains (losses) or, for futures contracts on equities, Market risk benefits gains (losses) in the Consolidated statements of operations. The following table presents net realized gains (losses) related to derivative instrument activity in the Consolidated statements of operations:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Investment and embedded derivative instruments:
Foreign currency forward contracts	$	(17)	$	(247)	$	(95)	$	(515)
All other futures contracts, options, and equities	29		49		5		285
Convertible securities (1)	(3)		—		(2)		(2)
Total investment and embedded derivative instruments	$	9	$	(198)	$	(92)	$	(232)
Other derivative instruments:
Futures contracts on equities (2)	$	52	$	54	$	(80)	$	240
Other	(7)		(19)		(6)		(9)
Total other derivative instruments	$	45	$	35	$	(86)	$	231
	$	54	$	(163)	$	(178)	$	(1)

(1)Includes embedded derivatives.

(2)Related to MRB book of business.

(i) Foreign currency exposure management

A foreign currency forward contract (forward) is an agreement between participants to exchange specific currencies at a future date. Chubb uses forwards to minimize the effect of fluctuating foreign currencies as discussed above.

(ii) Duration management and market exposure

Futures

Futures contracts give the holder the right and obligation to participate in market movements, determined by the index or underlying security on which the futures contract is based. Settlement is made daily in cash by an amount equal to the change in value of the futures contract times a multiplier that scales the size of the contract. Exchange-traded futures contracts on money market instruments, notes and bonds are used in fixed maturity portfolios to more efficiently manage duration, as substitutes for ownership of the money market instruments, bonds, and notes without significantly increasing the risk in the portfolio. Investments in futures contracts may be made only to the extent that there are assets under management not otherwise committed.

Exchange-traded equity futures contracts are used to limit exposure to a severe equity market decline, which would cause an increase in expected claims and, therefore, an increase in market risk benefit reserves.

Options

An option contract conveys to the holder the right, but not the obligation, to purchase or sell a specified amount or value of an underlying security at a fixed price. Option contracts are used in our investment portfolio as protection against unexpected shifts in interest rates, which would affect the duration of the fixed maturity portfolio. By using options in the portfolio, the overall interest rate sensitivity of the portfolio can be reduced. Option contracts may also be used as an alternative to futures contracts in the synthetic strategy as described above.

The price of an option is influenced by the underlying security, level of interest rates, expected volatility, time to expiration, and supply and demand.

The credit risk associated with the above derivative financial instruments relates to the potential for non-performance by counterparties. Although non-performance is not anticipated, in order to minimize the risk of loss, management monitors the creditworthiness of its counterparties and obtains collateral. The performance of exchange-traded instruments is guaranteed by

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

the exchange on which they trade. For non-exchange-traded instruments, the counterparties are principally banks which must meet certain criteria according to our investment guidelines.

Other

Included within Other are derivatives intended to reduce potential losses which may arise from certain exposures in our insurance business. The economic benefit provided by these derivatives is similar to purchased reinsurance. For example, Chubb may, from time to time, enter into crop derivative contracts to protect underwriting results in the event of a significant decline in commodity prices.

(iii) Convertible security investments

A convertible security is a debt instrument or preferred stock that can be converted into a predetermined amount of the issuer’s equity. The convertible option is an embedded derivative within the host instruments which are classified in the investment portfolio as either available for sale or as an equity security. Chubb purchases convertible securities for their total return and not specifically for the conversion feature.

(iv) TBA

By acquiring TBAs, we make a commitment to purchase a future issuance of mortgage-backed securities. For the period between purchase of the TBAs and issuance of the underlying security, we account for our position as a derivative in the Consolidated Financial Statements. Chubb purchases TBAs, from time to time, both for their total return and for the flexibility they provide related to our mortgage-backed security strategy.

(v) Futures contracts on equities

Under the MRB program, as the assuming entity, Chubb is obligated to provide coverage until the expiration or maturity of the underlying deferred annuity contracts or the expiry of the reinsurance treaty. We may recognize a loss for changes in fair value due to adverse changes in the capital markets (e.g., declining interest rates and/or declining U.S. and/or international equity markets). To mitigate adverse changes in the capital markets, we maintain positions in exchange-traded equity futures contracts, as noted under section "(ii) Futures" above. These futures increase in fair value when the S&P 500 index decreases (and decrease in fair value when the S&P 500 index increases). The net impact of gains or losses related to changes in fair value of the MRB liability and the exchange-traded equity futures are included in Market risk benefits gains (losses) in the Consolidated statements of operations.

d) Securities lending and secured borrowings

Chubb participates in a securities lending program operated by a third-party banking institution whereby certain assets are loaned to qualified borrowers and from which we earn an incremental return. The securities lending collateral can only be drawn down by Chubb in the event that the institution borrowing the securities is in default under the lending agreement. An indemnification agreement with the lending agent protects us in the event a borrower becomes insolvent or fails to return any of the securities on loan. The collateral is recorded in Securities lending collateral and the liability is recorded in Securities lending payable in the Consolidated balance sheets.

The following table presents the carrying value of collateral held under securities lending agreements by investment category and remaining contractual maturity of the underlying agreements:

	Remaining contractual maturity
	September 30, 2023		December 31, 2022
(in millions of U.S. dollars)	Overnight and Continuous
Collateral held under securities lending agreements:
Cash	$	762	$	820
U.S. Treasury / Agency	81		72
Non-U.S.	555		604
Corporate and asset-backed securities	47		27
Municipal	6		—
Equity securities	18		—
	$	1,469	$	1,523
Gross amount of recognized liability for securities lending payable	$	1,469	$	1,523

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

At September 30, 2023, and December 31, 2022, our repurchase agreement obligations of $2,617 million and $1,419 million, respectively, were fully collateralized. In contrast to securities lending programs, the use of cash received is not restricted for the repurchase obligations. The fair value of the underlying securities sold remains in Fixed maturities available for sale, and the repurchase agreement obligation is recorded in Repurchase agreements in the Consolidated balance sheets.  

The following table presents the carrying value of collateral pledged under repurchase agreements by investment category and remaining contractual maturity of the underlying agreements:

	Remaining contractual maturity
	September 30, 2023								December 31, 2022
	Up to 30 Days		30-90 Days		Greater than 90 Days		Total		Up to 30 Days		30-90 Days		Total
(in millions of U.S. dollars)
Collateral pledged under repurchase agreements:
Cash	$	—	$	—	$	46	$	46	$	12	$	—	$	12
Non-U.S.	1,138		—		—		$	1,138	—		—		$	—
U.S. Treasury / Agency	—		103		—		103		—		101		101
Mortgage-backed securities	50		507		909		1,466		921		493		1,414
	$	1,188	$	610	$	955	$	2,753	$	933	$	594	$	1,527
Gross amount of recognized liabilities for repurchase agreements							$	2,617					$	1,419
Difference (1)							$	136					$	108

(1)Per the repurchase agreements, the amount of collateral posted is required to exceed the amount of gross liability.

Potential risks exist in our secured borrowing transactions due to market conditions and counterparty exposure. With collateral that we pledge, there is a risk that the collateral may not be returned at the expiration of the agreement. If the counterparty fails to return the collateral, Chubb will have free use of the borrowed funds until our collateral is returned. In addition, we may encounter the risk that Chubb may not be able to renew outstanding borrowings with a new term or with an existing counterparty due to market conditions including a decrease in demand as well as more restrictive terms from banks due to increased regulatory and capital constraints. Should this condition occur, Chubb may seek alternative borrowing sources or reduce borrowings. Additionally, increased margins and collateral requirements due to market conditions would increase our restricted assets as we are required to provide additional collateral to support the transaction.

e) Fixed maturities

At September 30, 2023, and December 31, 2022, commitments to purchase fixed income securities over the next several years were $1,075 million and $770 million, respectively.

f) Private equities

At September 30, 2023, included in Private equities in the Consolidated balance sheet are investments in limited partnerships and partially-owned investment companies with a carrying value of $13.1 billion. In connection with these investments, we have commitments that may require funding of up to $6.3 billion over the next several years. At December 31, 2022, these investments had a carrying value of $12.0 billion with commitments that may have required funding of up to $7.4 billion.

g) Income taxes

At September 30, 2023, $67 million of unrecognized tax benefits remain outstanding. It is reasonably possible that, over the next twelve months, the amount of unrecognized tax benefits may change resulting from the re-evaluation of unrecognized tax benefits arising from examinations by taxing authorities, settlements, and the lapses of statutes of limitations. With few exceptions, Chubb is no longer subject to income tax examinations for years before 2012.

h) Legal proceedings

Our insurance subsidiaries are subject to claims litigation involving disputed interpretations of policy coverages and, in some jurisdictions, direct actions by allegedly-injured persons seeking damages from policyholders. These lawsuits, involving claims on policies issued by our subsidiaries which are typical to the insurance industry in general and in the normal course of business, are considered in our loss and loss expense reserves. In addition to claims litigation, we are subject to lawsuits and

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Chubb Limited and Subsidiaries

regulatory actions in the normal course of business that do not arise from or directly relate to claims on insurance policies. This category of business litigation typically involves, among other things, allegations of underwriting errors or misconduct, employment claims, regulatory activity, or disputes arising from our business ventures. In the opinion of management, our ultimate liability for these matters could be, but we believe is not likely to be, material to our consolidated financial condition and results of operations.

i) Lease commitments

At September 30, 2023, and December 31, 2022, the right-of-use asset was $549 million and $607 million, respectively, recorded within Other assets, and the lease liability was $577 million and $633 million, respectively, recorded within Accounts payable, accrued expenses, and other liabilities on the Consolidated balance sheets. These leases consist principally of real estate operating leases that are amortized on a straight-line basis over the term of the lease, which expire at various dates.

14. Shareholders’ equity

All of Chubb’s Common Shares are authorized under Swiss corporate law. Though the par value of Common Shares is stated in Swiss francs, Chubb continues to use U.S. dollars as its reporting currency for preparing the Consolidated Financial Statements. Under Swiss corporate law, dividends, including distributions from legal reserves or through a reduction in par value (par value reduction), must be stated in Swiss francs though dividend payments are made by Chubb in U.S. dollars. At September 30, 2023, our Common Shares had a par value of CHF 0.50 per share.

At our May 2023 annual general meeting, our shareholders approved an annual dividend for the following year of up to $3.44 per share, expected to be paid in four quarterly installments of $0.86 per share after the general meeting by way of distribution from capital contribution reserves, transferred to free reserves for payment. The Board of Directors (Board) will determine the record and payment dates at which the annual dividend may be paid until the date of 2024 annual general meeting, and is authorized to abstain from distributing a dividend at its discretion.

At our May 2022 and 2021 annual general meetings, our shareholders approved annual dividends for the following year of up to $3.32 per share and $3.20 per share, respectively, which were paid in four quarterly installments of $0.83 per share and $0.80 per share, respectively, at dates determined by the Board after the annual general meetings by way of a distribution from capital contribution reserves, transferred to free reserves for payment.

The following table presents dividend distributions per Common Share in Swiss francs (CHF) and U.S. dollars (USD):

	Three Months Ended						Nine Months Ended
	September 30						September 30
	2023			2022			2023			2022
	CHF	USD		CHF	USD		CHF	USD		CHF	USD
Total dividend distributions per common share	0.75	$	0.86	0.78	$	0.83	2.29	$	2.55	2.32	$	2.46

Increases in Common Shares in treasury are due to open market repurchases of Common Shares and the surrender of Common Shares to satisfy tax withholding obligations in connection with the vesting of restricted stock and the forfeiture of unvested restricted stock. Decreases in Common Shares in treasury are principally due to grants of restricted stock, exercises of stock options, purchases under the Employee Stock Purchase Plan (ESPP), and share cancellations. At the Chubb Limited Extraordinary General Meeting of Shareholders, held on November 3, 2021, shareholders approved the cancellation of 14,465,400 shares repurchased under our share repurchase program during the first six months of 2021. The capital reduction by cancellation of shares was subject to publication requirements and a two-month waiting period in accordance with Swiss law and became effective on January 17, 2022. At our May 2022 annual general meeting, held on May 19, 2022, our shareholders approved the cancellation of 13,179,100 shares purchased under our share repurchase program during the last six months of 2021. The capital reduction by cancellation of shares was subject to publication requirements and a two-month waiting period in accordance with Swiss law and became effective on August 4, 2022. At our May 2023 annual general meeting, held on May 17, 2023, our shareholders approved the cancellation of 14,925,028 shares purchased under our share repurchase programs during 2022. The capital reduction was subject to publication requirements and became effective in accordance with Swiss law on May 22, 2023. During the nine months ended September 30, 2023, 8,634,600 shares were

52

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

repurchased, 14,925,028 shares were canceled, and 2,024,083 net shares were issued under employee share-based compensation plans. At September 30, 2023, 23,467,247 Common Shares remain in treasury.

Chubb Limited securities repurchase authorizations

The Board has authorized share repurchase programs as follows:

•One-time incremental share repurchase program of $5.0 billion of Chubb Common Shares from July 19, 2021 through June 30, 2022;

•$2.5 billion of Chubb Common Shares from May 19, 2022 through June 30, 2023; and

•$5.0 billion of Chubb Common Shares effective July 1, 2023 with no expiration date.

The following table presents repurchases of Chubb's Common Shares conducted in a series of open market transactions under the Board authorizations:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars, except share data)	2023		2022		2023		2022
Number of shares repurchased	2,949,900		3,676,528		8,634,600		14,022,728
Cost of shares repurchased	$	606	$	685	$	1,758	$	2,815
Repurchase authorization remaining at end of period	$	4,398	$	1,816	$	4,398	$	1,816

The following table presents changes in accumulated other comprehensive income (loss):

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars)			As Adjusted				As Adjusted
Accumulated other comprehensive income (loss) (AOCI)
Net unrealized appreciation (depreciation) on investments
Balance – beginning of period, net of tax	$	(6,809)	$	(5,713)	$	(7,279)	$	2,256
Change in period, before reclassification from AOCI (before tax)	(2,240)		(3,324)		(1,935)		(12,898)
Amounts reclassified from AOCI (before tax)	70		279		357		857
Change in period, before tax	(2,170)		(3,045)		(1,578)		(12,041)
Income tax (expense) benefit	29		147		(93)		1,174
Total other comprehensive loss	(2,141)		(2,898)		(1,671)		(10,867)
Noncontrolling interests, net of tax	3		—		3		—
Balance – end of period, net of tax	(8,953)		(8,611)		(8,953)		(8,611)
Current discount rate on liability for future policy benefits
Balance – beginning of period, net of tax	(247)		(427)		(75)		(1,399)
Change in period, before tax	683		479		497		1,546
Income tax expense	(35)		(57)		(21)		(152)
Total other comprehensive income	648		422		476		1,394
Noncontrolling interests, net of tax	(3)		—		(3)		—
Balance – end of period, net of tax	404		(5)		404		(5)

53

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars)			As Adjusted				As Adjusted
Accumulated other comprehensive income (loss) (AOCI) - continued
Instrument-specific credit risk on market risk benefits
Balance – beginning of period, net of tax	(16)		(17)		(24)		(57)
Change in period, before and net of tax	(5)		8		3		48
Total other comprehensive income (loss)	(5)		8		3		48
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	(21)		(9)		(21)		(9)
Cumulative foreign currency translation adjustment
Balance – beginning of period, net of tax	(2,920)		(2,768)		(2,966)		(2,114)
Change in period, before reclassification from AOCI (before tax)	(314)		(942)		(269)		(1,631)
Amounts reclassified from AOCI (before tax)	(3)		—		(10)		—
Change in period, before tax	(317)		(942)		(279)		(1,631)
Income tax benefit	13		7		21		42
Total other comprehensive loss	(304)		(935)		(258)		(1,589)
Noncontrolling interests, net of tax	(76)		—		(76)		—
Balance – end of period, net of tax	(3,148)		(3,703)		(3,148)		(3,703)
Fair value hedging instruments
Balance – beginning of period, net of tax	(53)		—		(66)		—
Change in period, before reclassification from AOCI (before tax)	(17)		(94)		23		(94)
Amounts reclassified from AOCI (before tax)	55		32		32		32
Change in period, before tax	38		(62)		55		(62)
Income tax (expense) benefit	(7)		13		(11)		13
Total other comprehensive income (loss)	31		(49)		44		(49)
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	(22)		(49)		(22)		(49)
Postretirement benefit liability adjustment
Balance – beginning of period, net of tax	223		259		225		240
Change in period, before tax	(1)		3		(3)		27
Income tax expense	—		(1)		—		(6)
Total other comprehensive income (loss)	(1)		2		(3)		21
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	222		261		222		261
Accumulated other comprehensive income (loss)	$	(11,518)	$	(12,116)	$	(11,518)	$	(12,116)

54

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The following table presents reclassifications from accumulated other comprehensive income (loss) to the Consolidated statements of operations:

	Three Months Ended				Nine Months Ended				Consolidated Statement of Operations Location
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Fixed maturities available for sale	$	(70)	$	(279)	$	(357)	$	(857)	Net realized gains (losses)
Income tax benefit	25		39		59		138		Income tax expense
	$	(45)	$	(240)	$	(298)	$	(719)	Net income
Cumulative foreign currency translation adjustment
Cross-currency swaps	$	3	$	—	$	10	$	—	Interest expense
Income tax expense	(1)		—		(2)		—		Income tax expense
	$	2	$	—	$	8	$	—	Net income
Net gains (losses) of fair value hedging instruments
Cross-currency swaps	$	(51)	$	(32)	$	(20)	$	(32)	Net realized gains (losses)
Cross-currency swaps	(4)		—		(12)		—		Interest expense
Income tax benefit	12		7		7		7		Income tax expense
	$	(43)	$	(25)	$	(25)	$	(25)	Net income
Total amounts reclassified from AOCI	$	(86)	$	(265)	$	(315)	$	(744)

15. Share-based compensation

The Chubb Limited 2016 Long-Term Incentive Plan, as amended and restated (the Amended 2016 LTIP), permits grants of both incentive and non-qualified stock options principally at an option price per share equal to the grant date fair value of Chubb's Common Shares. Stock options are generally granted with a 3-year vesting period and a 10-year term. Stock options typically vest in equal annual installments over the respective vesting period, which is also the requisite service period. On February 23, 2023, Chubb granted 1,540,002 stock options with a weighted-average grant date fair value of $51.32 each. The fair value of the options issued is estimated on the grant date using the Black-Scholes option pricing model.

The Amended 2016 LTIP also permits grants of service-based restricted stock and restricted stock units as well as performance-based restricted stock awards. Chubb generally grants service-based restricted stock and restricted stock units with a 4-year vesting period, based on a graded vesting schedule. The performance-based restricted stock awards granted comprise target awards and premium awards that cliff vest at the end of a 3-year performance period based on both tangible book value (shareholders' equity less goodwill and intangible assets, net of tax) per share growth and P&C combined ratio compared to a defined group of peer companies. Premium awards are subject to an additional vesting provision based on total shareholder return compared to our peer group. The restricted stock is principally granted at market close price on the grant date. On February 23, 2023, Chubb granted 785,319 service-based restricted stock awards, 315,545 service-based restricted stock units, and 407,825 performance-based stock awards to employees and officers with a grant date fair value of $208.60 each. Each restricted stock unit represents our obligation to deliver to the holder one Common Share upon vesting.

55

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

16. Postretirement benefits

The components of net pension and other postretirement benefit costs (benefits) reflected in Net income in the Consolidated statements of operations were as follows:

	Pension Benefit Plans								Other Postretirement Benefit Plans
	2023				2022				2023		2022
Three Months Ended September 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost	$	—	$	2	$	—	$	1	$	—	$	—
Non-service cost (benefit):
Interest cost	35		9		21		5		1		—
Expected return on plan assets	(56)		(13)		(70)		(11)		—		—
Amortization of net actuarial loss	—		—		—		—		(1)		—
Amortization of prior service cost	—		—		—		—		(1)		—
Settlements	3		—		—		—		—		—
Total non-service cost (benefit)	(18)		(4)		(49)		(6)		(1)		—
Net periodic benefit cost (benefit)	$	(18)	$	(2)	$	(49)	$	(5)	$	(1)	$	—

	Pension Benefit Plans								Other Postretirement Benefit Plans
	2023				2022				2023		2022
Nine Months Ended September 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost:	$	—	$	6	$	—	$	3	$	—	$	—
Non-service cost (benefit):
Interest cost	103		27		64		17		2		1
Expected return on plan assets	(168)		(38)		(212)		(33)		(2)		(1)
Amortization of net actuarial loss	—		—		—		—		(1)		—
Amortization of prior service cost	—		—		—		—		(1)		—
Settlements	3		—		—		—		—		—
Total non-service cost (benefit)	(62)		(11)		(148)		(16)		(2)		—
Net periodic benefit cost (benefit)	$	(62)	$	(5)	$	(148)	$	(13)	$	(2)	$	—

56

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

The line items in which the service cost and non-service cost (benefit) components of net periodic cost (benefit) are included in the Consolidated statements of operations were as follows:

	Pension Benefit Plans				Other Postretirement Benefit Plans
Three Months Ended September 30	2023		2022		2023		2022
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	—	$	—	$	—
Administrative expenses	2		1		—		—
Total service cost	2		1		—		—
Non-service cost (benefit):
Losses and loss expenses	(1)		(5)		—		—
Administrative expenses	(21)		(50)		(1)		—
Total non-service cost (benefit)	(22)		(55)		(1)		—
Net periodic benefit cost (benefit)	$	(20)	$	(54)	$	(1)	$	—

	Pension Benefit Plans				Other Postretirement Benefit Plans
Nine Months Ended September 30	2023		2022		2023		2022
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	—	$	—	$	—
Administrative expenses	6		3		—		—
Total service cost	6		3		—		—
Non-service cost (benefit):
Losses and loss expenses	(6)		(15)		—		—
Administrative expenses	(67)		(149)		(2)		—
Total non-service cost (benefit)	(73)		(164)		(2)		—
Net periodic benefit cost (benefit)	$	(67)	$	(161)	$	(2)	$	—

57

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

17. Other income and expense

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Equity in net income (loss) of partially-owned entities	$	150	$	(111)	$	610	$	180
Gains (losses) from fair value changes in separate account assets (1)	(19)		(67)		(56)		(116)
Asset management and performance fee revenue	55		—		55		—
Asset management and performance fee expense	(33)		—		(33)		—
Federal excise and capital taxes	(6)		(6)		(17)		(15)
Other	7		(18)		(9)		(40)
Total	$	154	$	(202)	$	550	$	9

(1)     Related to gains (losses) from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP.

Equity in net income of partially-owned entities includes our share of net income or loss, both underlying operating income and mark-to-market movement, related to partially-owned investment companies (private equity) where we own more than three percent, and partially-owned insurance companies. This line item includes mark-to-market gains (losses) on private equities of $51 million and $290 million for the three and nine months ended September 30, 2023, respectively, and $(190) million and $(69) million, respectively, for the prior year periods.

Other income and expense includes net income attributable to our investment in Huatai under the equity method of accounting comprising income of $36 million through June 30, 2023, and $28 million and $83 million for the three and nine months ended September 30, 2022, respectively. Effective July 1, 2023, we discontinued the equity method of accounting and include the results of operations of Huatai in our consolidated results.

Also included in Other income and expense are gains (losses) from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP. The offsetting movement in the separate account liabilities is included in Policy benefits in the Consolidated statements of operations.

Asset management and performance fee revenue and expense primarily relate to the management of third-party assets by Huatai's asset management business, which is unrelated to Huatai Group's core insurance operations. These revenues and expenses are recognized in the period in which the services are performed.

Certain federal excise and capital taxes incurred as a result of capital management initiatives are included in Other income and expense as these are considered capital transactions and are excluded from underwriting results. Bad debt expense for uncollectible premiums is also included in Other income and expense.

18. Segment information

Chubb operates through six business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. These segments distribute their products through various forms of brokers, agencies, and direct marketing programs. All business segments have established relationships with reinsurance intermediaries. Commencing in the third quarter of 2023, the results of Huatai Group's life and asset management business are included in the Life Insurance segment, and the results of Huatai Group's P&C business are included in the Overseas General Insurance segment. Results for Huatai Group’s non-insurance operations, comprising real estate and holding company activity, are included in Corporate. Commencing in the third quarter of 2022, the results of Cigna's business in Asia are included in our Life Insurance segment and, to a lesser extent, Overseas General Insurance segment according to the nature of the business written.

Management uses underwriting income (loss) as the basis for segment performance for its P&C operations. P&C underwriting income (loss) excludes the Life Insurance segment and is calculated by subtracting Losses and loss expenses, Policy benefits, Policy acquisition costs, and Administrative expenses from Net premiums earned. Segment income (loss) includes Underwriting income (loss), Net investment income (loss), and Other operating income and expense items such as each segment's share of the operating income (loss) related to partially-owned entities and miscellaneous income and expense items for which the segments are held accountable. Our main measure of segment performance is Segment income (loss), which also includes Amortization of purchased intangibles acquired by the segment. We determined that this definition of Segment income (loss) is appropriate and aligns with how the business is managed. We continue to evaluate our segments as our business continues to evolve and may further refine our segments and Segment income (loss) measures.

58

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Chubb Limited and Subsidiaries

Revenue and expenses managed at the corporate level, including Net realized gains (losses), Market risk benefits gains (losses), Interest expense, Cigna integration expenses, Income tax, and Net income (loss) attributable to noncontrolling interests are reported within Corporate. Cigna integration expenses are one-time costs that are directly attributable to third-party consulting fees, employee-related retention costs, and other professional and legal fees primarily related to the acquisition of Cigna's business in Asia. These items are not allocated to the segment level as they are one-time in nature and are not related to the ongoing business activities of the segment. The Chief Executive Officer does not manage segment results or allocate resources to segments when considering these costs, and therefore are excluded from our definition of Segment income (loss).

Certain items are presented in a different manner for segment reporting purposes than in the Consolidated Financial Statements. These items are reconciled to the consolidated presentation in the Segment measure reclass column below and include:

•Losses and loss expenses include realized gains and losses on crop derivatives. These derivatives were purchased to provide economic benefit, in a manner similar to reinsurance protection, in the event that a significant decline in commodity pricing impacts underwriting results. We view gains and losses on these derivatives as part of the results of our underwriting operations, and therefore realized gains (losses) from these derivatives are reclassified to Losses and loss expenses.

•Policy benefits include fair value changes on separate accounts that do not qualify for separate accounting under GAAP. These gains and losses have been reclassified from Other (income) expense. We view gains and losses from fair value changes in both separate account assets and liabilities as part of the results of our underwriting operations, and therefore these gains and losses are reclassified to Policy benefits.

•Net investment income includes investment income reclassified from Other (income) expense related to partially-owned investment companies (private equity partnerships) where our ownership interest is in excess of three percent. We view investment income from these equity-method private equity partnerships as Net investment income for segment reporting purposes.

The following tables present the Statement of Operations by segment:

For the Three Months Ended September 30, 2023 (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated
Net premiums written	$	5,132	$	1,527	$	1,521	$	3,211	$	261	$	1,452	$	—	$	—	$	13,104
Net premiums earned	4,735		1,407		1,540		3,311		239		1,442		—		—		12,674
Losses and loss expenses	3,025		900		1,356		1,635		116		20		61		(7)		7,106
Policy benefits	—		—		—		91		—		866		—		(19)		938
Policy acquisition costs	640		287		76		827		69		279		—		—		2,178
Administrative expenses	323		84		3		327		9		216		98		—		1,060
Underwriting income (loss)	747		136		105		431		45		61		(159)		26		1,392
Net investment income	780		94		12		248		47		211		14		(92)		1,314
Other (income) expense	6		2		—		(10)		—		(28)		(51)		(73)		(154)
Amortization expense of    purchased intangibles	—		3		6		19		—		12		44		—		84
Segment income (loss)	$	1,521	$	225	$	111	$	670	$	92	$	288	$	(138)	$	7	$	2,776
Net realized gains (losses)													(96)		(7)		(103)
Market risk benefits gains (losses)													(32)		—		(32)
Interest expense													174		—		174
Cigna integration expenses													14		—		14
Income tax expense													413		—		413
Net income (loss)													(867)		—		2,040
Net loss attributable to noncontrolling interests													(3)		—		(3)
Net income (loss) attributable to Chubb													$	(864)	$	—	$	2,043

59

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

For the Three Months Ended September 30, 2022 (As Adjusted) (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated
Net premiums written	$	4,722	$	1,392	$	1,723	$	2,645	$	265	$	1,265	$	—	$	—	$	12,012
Net premiums earned	4,283		1,334		1,673		2,741		255		1,244		—		—		11,530
Losses and loss expenses	3,036		857		1,444		1,333		311		27		74		(19)		7,063
Policy benefits	—		—		—		108		—		666		—		(67)		707
Policy acquisition costs	583		274		68		720		59		266		—		—		1,970
Administrative expenses	272		71		3		264		8		174		91		—		883
Underwriting income (loss)	392		132		158		316		(123)		111		(165)		86		907
Net investment income	589		76		9		151		71		147		5		(69)		979
Other (income) expense	6		1		1		(2)		—		4		194		(2)		202
Amortization expense of    purchased intangibles	—		2		7		12		—		2		46		—		69
Segment income (loss)	$	975	$	205	$	159	$	457	$	(52)	$	252	$	(400)	$	19	$	1,615
Net realized gains (losses)													(437)		(19)		(456)
Market risk benefits gains (losses)													69		—		69
Interest expense													150		—		150
Cigna integration expenses													23		—		23
Income tax expense													263		—		263
Net income (loss)													$	(1,204)	$	—	$	792

For the Nine Months Ended September 30, 2023 (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated
Net premiums written	$	14,575	$	4,404	$	2,581	$	9,359	$	831	$	4,015	$	—	$	—	$	35,765
Net premiums earned	13,710		4,084		2,334		9,005		720		3,962		—		—		33,815
Losses and loss expenses	8,625		2,634		2,003		4,139		319		87		133		(3)		17,937
Policy benefits	—		—		—		338		—		2,283		—		(56)		2,565
Policy acquisition costs	1,867		836		128		2,286		196		829		—		—		6,142
Administrative expenses	934		247		9		899		27		553		290		—		2,959
Underwriting income (loss)	2,284		367		194		1,343		178		210		(423)		59		4,212
Net investment income	2,204		262		43		636		144		525		28		(276)		3,566
Other (income) expense	18		2		—		(29)		(1)		(69)		(251)		(220)		(550)
Amortization expense of    purchased intangibles	—		8		19		52		—		18		129		—		226
Segment income (loss)	$	4,470	$	619	$	218	$	1,956	$	323	$	786	$	(273)	$	3	$	8,102
Net realized gains (losses)													(481)		(3)		(484)
Market risk benefits gains (losses)													(154)		—		(154)
Interest expense													499		—		499
Cigna integration expenses													51		—		51
Income tax expense													1,189		—		1,189
Net income (loss)													$	(2,647)	$	—	$	5,725
Net loss attributable to noncontrolling interests													(3)		—		(3)
Net income (loss) attributable to Chubb													$	(2,644)	$	—	$	5,728

60

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

For the Nine Months Ended September 30, 2022 (As Adjusted) (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated
Net premiums written	$	13,426	$	3,998	$	2,523	$	8,364	$	780	$	2,403	$	—	$	—	$	31,494
Net premiums earned	12,645		3,852		2,217		8,065		712		2,325		—		—		29,816
Losses and loss expenses	7,979		2,343		1,830		3,772		565		78		275		(9)		16,833
Policy benefits	—		—		—		282		—		1,275		—		(116)		1,441
Policy acquisition costs	1,701		792		111		2,096		178		537		—		—		5,415
Administrative expenses	814		213		4		811		27		346		264		—		2,479
Underwriting income (loss)	2,151		504		272		1,104		(58)		89		(539)		125		3,648
Net investment income (loss)	1,600		199		23		460		232		359		(4)		(180)		2,689
Other (income) expense	12		3		1		3		1		(38)		73		(64)		(9)
Amortization expense of    purchased intangibles	—		7		20		40		—		7		137		—		211
Segment income (loss)	$	3,739	$	693	$	274	$	1,521	$	173	$	479	$	(753)	$	9	$	6,135
Net realized gains (losses)													(927)		(9)		(936)
Market risk benefits gains (losses)													85		—		85
Interest expense													416		—		416
Cigna integration expenses													26		—		26
Income tax expense													907		—		907
Net income (loss)													$	(2,944)	$	—	$	3,935

Underwriting assets are reviewed in total by management for purposes of decision-making. Other than Unpaid losses and loss expenses, Future policy benefits, Reinsurance recoverables, DAC, VOBA, Goodwill and Other intangible assets, Chubb does not allocate assets to its segments.

19. Earnings per share

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars, except share and per share data)			As Adjusted				As Adjusted
Numerator:
Net income	$	2,040	$	792	$	5,725	$	3,935
Net loss attributable to noncontrolling interests	(3)		—		(3)		—
Net income attributable to Chubb	$	2,043	$	792	$	5,728	$	3,935
Denominator:
Denominator for basic earnings per share attributable to Chubb:
Weighted-average shares outstanding	409,505,454		416,542,101		412,076,470		421,290,032
Denominator for diluted earnings per share attributable to Chubb:
Share-based compensation plans	3,100,505		3,076,855		3,288,940		3,733,449
Weighted-average shares outstanding and assumed conversions	412,605,959		419,618,956		415,365,410		425,023,481
Basic earnings per share attributable to Chubb	$	4.99	$	1.90	$	13.90	$	9.34
Diluted earnings per share attributable to Chubb	$	4.95	$	1.89	$	13.79	$	9.26
Potential anti-dilutive share conversions	2,562,206		1,693,502		2,330,821		1,377,784

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)

Chubb Limited and Subsidiaries

Excluded from weighted-average shares outstanding and assumed conversions is the impact of securities that would have been anti-dilutive during the respective periods. These securities consisted of stock options in which the underlying exercise prices were greater than the average market prices of our Common Shares. Refer to Note 12 to the Consolidated Financial Statements of our 2022 Form 10-K for additional information on stock options.

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ITEM 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

The following is a discussion of our results of operations, financial condition, and liquidity and capital resources as of and for the three and nine months ended September 30, 2023.

All comparisons in this discussion are to the corresponding prior year period unless otherwise indicated. All dollar amounts are rounded. However, percent changes and ratios are calculated using whole dollars. Accordingly, calculations using rounded dollars may differ.

Our results of operations and cash flows for any interim period are not necessarily indicative of our results for the full year. This discussion should be read in conjunction with our consolidated financial statements and related notes and our Management’s Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K for the year ended December 31, 2022 (2022 Form 10-K).

Other Information

We routinely post important information for investors on our website (investors.chubb.com). We use this website as a means of disclosing material, non-public information and for complying with our disclosure obligations under Securities and Exchange Commission (SEC) Regulation FD (Fair Disclosure). Accordingly, investors should monitor the Investor Information portion of our website, in addition to following our press releases, SEC filings, public conference calls, and webcasts. The information contained on, or that may be accessed through, our website is not incorporated by reference into, and is not a part of, this report.

MD&A Index	Page
Forward-Looking Statements	64
Overview	65
Consolidated Operating Results	66
Segment Operating Results	71
Net Realized and Unrealized Gains (Losses)	82
Effective Income Tax Rate	84
Non-GAAP Reconciliation	84
Amortization of Purchased Intangibles and Other Amortization	90
Net Investment Income	91
Investments	91
Critical Accounting Estimates	96
Unpaid Losses and Loss Expenses	96
Future policy benefits	96
Asbestos and Environmental (A&E)	96
Fair Value Measurements	96
Catastrophe Management	97
Global Property Catastrophe Reinsurance Program	98
Capital Resources	99
Liquidity	100
Information Provided In Connection With Outstanding Debt of Subsidiaries	101

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Forward-Looking Statements

The Private Securities Litigation Reform Act of 1995 provides a “safe harbor” for forward-looking statements. Any written or oral statements made by us or on our behalf may include forward-looking statements that reflect our current views with respect to future events and financial performance. The words “believe,” “anticipate,” “estimate,” “project,” “should,” “plan,” “expect,” “intend,” “hope,” “feel,” “foresee,” “will likely result,” “will continue,” and variations thereof and similar expressions, identify forward-looking statements. These forward-looking statements are subject to certain risks, uncertainties, and other factors that could, should potential events occur, cause actual results to differ materially from such statements. These risks, uncertainties, and other factors, which are described in more detail elsewhere herein and in other documents we file with the U.S. Securities and Exchange Commission (SEC), include but are not limited to:

•actual amount of new and renewal business, premium rates, underwriting margins, market acceptance of our products, and risks associated with the introduction of new products and services and entering new markets; the competitive environment in which we operate, including trends in pricing or in policy terms and conditions, which may differ from our projections, and changes in market conditions that could render our business strategies ineffective or obsolete;

•losses arising out of natural or man-made catastrophes; actual loss experience from insured or reinsured events and the timing of claim payments; the uncertainties of the loss-reserving and claims-settlement processes, including the difficulties associated with assessing environmental damage and asbestos-related latent injuries, the impact of aggregate-policy-coverage limits, the impact of bankruptcy protection sought by various asbestos producers and other related businesses, and the timing of loss payments;

•changes in the distribution or placement of risks due to increased consolidation of insurance and reinsurance brokers; material differences between actual and expected assessments for guaranty funds and mandatory pooling arrangements; the ability to collect reinsurance recoverable, credit developments of reinsurers, and any delays with respect thereto and changes in the cost, quality, or availability of reinsurance;

•uncertainties relating to governmental, legislative and regulatory policies, developments, actions, investigations, and treaties; judicial decisions and rulings, new theories of liability, legal tactics, and settlement terms; the effects of data privacy or cyber laws or regulation; global political conditions and possible business disruption or economic contraction that may result from such events;

•severity of pandemics and related risks, and their effects on our business operations and claims activity, and any adverse impact to our insureds, brokers, agents, and employees; actual claims may exceed our best estimate of ultimate insurance losses incurred which could change including as a result of, among other things, the impact of legislative or regulatory actions taken in response to a pandemic;

•developments in global financial markets, including changes in interest rates, stock markets, and other financial markets; increased government involvement or intervention in the financial services industry; the cost and availability of financing, and foreign currency exchange rate fluctuations; changing rates of inflation; and other general economic and business conditions, including the depth and duration of potential recession;

•the availability of borrowings and letters of credit under our credit facilities; the adequacy of collateral supporting funded high deductible programs; the amount of dividends received from subsidiaries;

•changes to our assessment as to whether it is more likely than not that we will be required to sell, or have the intent to sell, available for sale fixed maturity investments before their anticipated recovery;

•actions that rating agencies may take from time to time, such as financial strength or credit ratings downgrades or placing these ratings on credit watch negative or the equivalent;

•the effects of public company bankruptcies and accounting restatements, as well as disclosures by and investigations of public companies relating to possible accounting irregularities, and other corporate governance issues;

•acquisitions made performing differently than expected, our failure to realize anticipated expense-related efficiencies or growth from acquisitions, the impact of acquisitions on our pre-existing organization, and risks and uncertainties relating to our planned purchases of additional interests in Huatai Insurance Group Co., Ltd. (Huatai Group), including our ability to receive Chinese insurance regulatory approval and complete the purchases;

•risks associated with being a Swiss corporation, including reduced flexibility with respect to certain aspects of capital management and the potential for additional regulatory burdens; share repurchase plans and share cancellations;

•loss of the services of any of our executive officers without suitable replacements being recruited in a reasonable time frame;

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•the ability of our technology resources, including information systems and security, to perform as anticipated such as with respect to preventing material information technology failures or third-party infiltrations or hacking resulting in consequences adverse to Chubb or its customers or partners; the ability of our company to increase use of data analytics and technology as part of our business strategy and adapt to new technologies; and

•management’s response to these factors and actual events (including, but not limited to, those described above).

You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of their dates. We undertake no obligation to publicly update or review any forward-looking statements, whether as a result of new information, future events or otherwise.

Overview

Chubb Limited is the Swiss-incorporated holding company of the Chubb Group of Companies. Chubb Limited, which is headquartered in Zurich, Switzerland, and its direct and indirect subsidiaries (collectively, the Chubb Group of Companies, Chubb, we, us, or our) are a global insurance and reinsurance organization, serving the needs of a diverse group of clients worldwide. At September 30, 2023, we had total assets of $223 billion and total Chubb shareholders’ equity, which excludes noncontrolling interests, of $52.4 billion. Chubb was incorporated in 1985 at which time it opened its first business office in Bermuda and continues to maintain operations in Bermuda. We operate through six business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. For more information on our segments refer to “Segment Information” under Item 1 in our 2022 Form 10-K.

On July 1, 2023, we completed the acquisition of a controlling majority interest of Huatai Group. For the three and nine months ended September 30, 2023, the results of operations of Huatai Group is reported at 100 percent in our consolidated results starting from the acquisition date, with amounts attributable to shareholders other than Chubb are reflected under Noncontrolling interests. Huatai Group's life and asset management businesses are included in the Life Insurance segment, and Huatai Group's P&C business is included in the Overseas General Insurance segment. Results for Huatai Group's non-insurance operations, comprising real estate and holding company activity, are included in Corporate.

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Consolidated Operating Results – Three and Nine Months Ended September 30, 2023 and 2022

	Three Months Ended						Nine Months Ended
	September 30				% Change		September 30				% Change
(in millions of U.S. dollars, except for percentages)	2023		2022		Q-23 vs. Q-22		2023		2022		YTD-23 vs. YTD-22
Net premiums written	$	13,104	$	12,012	9.1	%	$	35,765	$	31,494	13.6	%
Net premiums written - constant dollars (1)					8.4	%					14.0	%
Net premiums earned	12,674		11,530		9.9	%	33,815		29,816		13.4	%
Net investment income	1,314		979		34.2	%	3,566		2,689		32.6	%
Net realized gains (losses)	(103)		(456)		(77.3)	%	(484)		(936)		(48.1)	%
Market risk benefits gains (losses)	(32)		69		NM		(154)		85		NM
Total revenues	13,853		12,122		14.3	%	36,743		31,654		16.1	%
Losses and loss expenses	7,106		7,063		0.6	%	17,937		16,833		6.6	%
Policy benefits	938		707		32.7	%	2,565		1,441		78.0	%
Policy acquisition costs	2,178		1,970		10.6	%	6,142		5,415		13.4	%
Administrative expenses	1,060		883		20.0	%	2,959		2,479		19.3	%
Interest expense	174		150		15.6	%	499		416		19.8	%
Other (income) expense	(154)		202		NM		(550)		(9)		NM
Amortization of purchased intangibles	84		69		22.0	%	226		211		7.1	%
Cigna integration expenses	14		23		(38.8)	%	51		26		99.4	%
Total expenses	11,400		11,067		3.0	%	29,829		26,812		11.2	%
Income before income tax	2,453		1,055		132.2	%	6,914		4,842		42.8	%
Income tax expense	413		263		57.2	%	1,189		907		31.1	%
Net income	$	2,040	$	792	157.0	%	$	5,725	$	3,935	45.4	%
Net loss attributable to noncontrolling interests	(3)		—		NM		(3)		—		NM
Net income attributable to Chubb	$	2,043	$	792	157.8	%	$	5,728	$	3,935	45.5	%

NM - not meaningful

(1)     On a constant-dollar basis. Amounts are calculated by translating prior period results using the same local currency exchange rates as the comparable current period.

Financial Highlights for the Three Months Ended September 30, 2023

•On July 1, 2023, Chubb increased its investment in Huatai Group from approximately 64.2 percent to approximately 69.6 percent, discontinued the equity method of accounting and applied consolidation accounting. Business activity for, and the financial position of, Huatai Group is reported at 100 percent on the Consolidated Financial Statements. The relevant amounts attributable to investors other than Chubb are reflected under Noncontrolling interests, Net income (loss) attributable to noncontrolling interests, and Comprehensive income (loss) attributable to noncontrolling interests on the Consolidated Financial Statements. Refer to Note 2 to the Consolidated Financial Statements for additional information.

•Net income attributable to Chubb was $2.0 billion compared with $792 million in the prior year period. Net income in the current quarter was driven by strong underwriting results, including growth in net premiums earned, and record net investment income. There were after-tax mark-to-market gains on public and private equities of $46 million in the current quarter compared to losses of $287 million in the prior year. In addition, there were after-tax realized losses on fixed maturities of $37 million, compared to $393 million in the prior year.

•Consolidated net premiums written were $13.1 billion, up 9.1 percent, or 8.4 percent in constant dollars. P&C net premiums written increased 8.4 percent, or 7.6 percent in constant dollars, with commercial lines and consumer lines up 5.4 percent and 14.9 percent, respectively. Life Insurance segment net premiums written increased 14.9 percent. The consolidation of Huatai Group added 2.9 percentage points, 1.8 percentage points, and 11.9 percentage points to consolidated, P&C, and Life Insurance net premiums written growth, respectively.

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•Consolidated net premiums earned were $12.7 billion, up 9.9 percent, or 9.0 percent in constant dollars. The consolidation of Huatai Group added 3.3 percentage points to the growth in net premiums earned.

•Total pre-tax and after-tax catastrophe losses were $670 million (6.0 percentage points of the P&C combined ratio) and $544 million, respectively, compared with $1.2 billion (11.3 percentage points of the P&C combined ratio) and $949 million, respectively, in the prior year period.

•Total pre-tax and after-tax favorable prior period development were $200 million (1.9 percentage points of the P&C combined ratio) and $116 million, respectively. This compares with $222 million (2.2 percentage points of the P&C combined ratio) and $162 million, respectively, in the prior year period.

•The P&C combined ratio was 88.4 percent compared with 93.1 percent in the prior year period. The current year P&C combined ratio decreased primarily due to lower catastrophe losses, partially offset by lower favorable prior period development. The P&C current accident year (CAY) combined ratio excluding catastrophe losses was 84.3 percent compared with 84.0 percent in the prior year period.

•Net investment income was a record $1.3 billion compared with $979 million in the prior year period, primarily reflecting higher reinvestment rates and the consolidation of Huatai Group.

•Operating cash flow was a record $4.7 billion compared with $3.4 billion in the prior year period.

•Chubb shareholders' equity decreased 1.0 percent in the quarter, as net income attributable to Chubb was more than offset by net unrealized losses and total capital returned to shareholders of $1.0 billion. Shareholders' equity also includes a one-time net realized and unrealized gain of $727 million, principally reflecting the discontinuation of the equity method of accounting upon the consolidation of Huatai. Total capital returned to shareholders comprises share repurchases of $606 million, at an average purchase price of $205.44 per share, and dividends of $352 million. We previously announced that our Board of Directors approved a new share repurchase program of up to $5 billion with no expiration date, effective July 1, 2023.

•Effective January 1, 2023, we adopted the Long-Duration Targeted Improvements (LDTI) U.S. GAAP guidance, which principally impacted the Life Insurance segment. Financial data for the prior reporting periods in this report are adjusted, as applicable, and are presented in accordance with the new guidance. The impact to 2022 results was immaterial.

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Net Premiums Written	Three Months Ended September 30						% Change		Nine Months Ended September 30						% Change
(in millions of U.S. dollars, except for percentages)	2023		2022		Q-23 vs. Q-22		C$ Q-23 vs. Q-22		2023		2022		YTD-23 vs. YTD-22		C$ YTD-23 vs. YTD-22
Commercial casualty	$	2,332	$	2,167	7.6	%	7.2	%	$	6,259	$	5,777	8.3	%	9.1	%
Workers' compensation	538		476		13.1	%	13.1	%	1,693		1,625		4.2	%	4.2	%
Financial lines	1,333		1,270		4.9	%	4.5	%	3,733		3,727		0.2	%	0.9	%
Surety	172		152		13.1	%	10.0	%	506		477		6.1	%	5.0	%
Commercial multiple peril (1)	398		341		16.9	%	16.9	%	1,129		972		16.2	%	16.2	%
Property and other short-tail lines	2,082		1,756		18.5	%	17.8	%	6,453		5,503		17.3	%	18.3	%
Total Commercial P&C lines	6,855		6,162		11.2	%	10.7	%	19,773		18,081		9.4	%	10.0	%
Agriculture	1,521		1,723		(11.7)	%	(11.7)	%	2,581		2,523		2.3	%	2.3	%
Personal automobile	547		404		35.3	%	26.7	%	1,434		1,239		15.7	%	10.8	%
Personal homeowners	1,192		1,023		16.5	%	16.6	%	3,268		2,910		12.3	%	12.8	%
Personal other	474		451		5.3	%	2.7	%	1,466		1,406		4.3	%	5.3	%
Total Personal lines	2,213		1,878		17.9	%	15.5	%	6,168		5,555		11.0	%	10.4	%
Global A&H - P&C	802		719		11.4	%	8.9	%	2,397		2,152		11.4	%	12.4	%
Reinsurance lines	261		265		(1.4)	%	(1.8)	%	831		780		6.5	%	6.9	%
Total Property and Casualty lines	11,652		10,747		8.4	%	7.6	%	31,750		29,091		9.1	%	9.5	%
Life Insurance	1,452		1,265		14.9	%	15.2	%	4,015		2,403		67.1	%	68.4	%
Total consolidated	$	13,104	$	12,012	9.1	%	8.4	%	$	35,765	$	31,494	13.6	%	14.0	%

(1)Commercial multiple peril represents retail package business (property and general liability).

The increase in consolidated net premiums written for the three and nine months ended September 30, 2023, reflects growth across most product lines driven by strong premium retention, including rate and exposure increases, and strong new business. The consolidation of Huatai Group contributed $365 million, or 2.9 percentage points and 1.1 percentage points, for the three and nine months ended September 30, 2023, respectively.

•Commercial casualty grew in all regions globally, principally in North America and Europe, driven by strong premium retention, including both rate and exposure increases, and strong new business.

•Workers' compensation growth reflects increased audit exposure in North America.

•Commercial multiple peril increased due to strong premium retention, including both rate and exposure increases, and strong new business in North America.

•Property and other short-tail lines grew globally due to strong premium retention, including both rate and exposure increases, and strong new business.

•Agriculture decreased in the quarter mainly due to the timing of premium recognition this year versus last year, and a modest increase in the premium the company shared with the Federal Government. Growth for the year reflects the above factors and the prior year return of premium to the U.S. government of $161 million.

•Personal lines grew principally in North America and Europe, with growth strongest in homeowners.

•Global A&H – P&C increased primarily due to the acquisition of Cigna's business in Asia; and higher new business and increased consumer activity, including higher travel volume, in Europe, Latin America, and Japan.

•Reinsurance lines decreased in the quarter, as continued growth in the portfolio, primarily in property lines, was more than offset by the impact of catastrophe reinstatement premiums recognized in the prior year. Growth for the year reflects continued growth in the portfolio, primarily in property lines, partially offset by the impact of catastrophe reinstatement premiums recognized in the prior year.

•Life increased primarily due to the consolidation of Huatai Group in the third quarter of 2023, which contributed $149 million or 11.9 percentage points. Growth for the year is primarily due to the acquisition of Cigna's business in Asia, and growth in Latin America and Asia.

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For additional information on net premiums written, refer to the segment results discussions.

Net Premiums Earned

Net premiums earned for short-duration contracts, typically P&C contracts, generally reflect the portion of net premiums written that was recorded as revenues for the period as the exposure periods expire. Net premiums earned for long-duration contracts, typically traditional life contracts, generally are recognized as earned when due from policyholders. For the three months ended September 30, 2023, net premiums earned increased $1.1 billion, up 9.9 percent, or 9.0 percent in constant dollars. P&C net premiums earned increased 9.2 percent, or 8.1 percent in constant dollars, comprising growth in commercial and consumer lines of 6.9 percent and 11.9 percent, respectively. For the nine months ended September 30, 2023, net premiums earned increased $4.0 billion, up 13.4 percent, or 13.7 percent in constant dollars. P&C net premiums earned increased 8.6 percent, or 8.8 percent in constant dollars, comprising growth in commercial and consumer lines of 8.7 percent and 9.3 percent, respectively.

Catastrophe Losses and Prior Period Development

We generally define catastrophe loss events consistent with the definition of the Property Claims Service (PCS) for events in the U.S. and Canada. PCS defines a catastrophe as an event that causes damage of $25 million or more in insured losses and affects a significant number of insureds. For events outside of the U.S. and Canada, we generally use a similar definition.

Prior period development (PPD) arises from changes to loss estimates recognized in the current year that relate to loss events that occurred in previous calendar years and excludes the effect of losses from the development of earned premium from previous accident years. PPD includes adjustments relating to either profit commission reserves or policyholder dividend reserves based on actual claim experience that develops after the policy period ends. The expense adjustments correlate to the prior period loss development on these same policies. Refer to the Non-GAAP Reconciliation section for further information on reinstatement premiums on catastrophe losses and adjustments to prior period development.

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Catastrophe losses	$	670	$	1,158	$	1,528	$	1,782
Favorable prior period development	$	200	$	222	$	596	$	709

Catastrophe losses through September 30, 2023 and 2022, were primarily from the following events:

•2023: Severe weather-related events in the U.S. and internationally, Hawaii wildfires, and New Zealand storms.

•2022: Hurricane Ian losses of $975 million, severe weather-related events in the U.S. and internationally, Australia storms, and Colorado wildfires.

Pre-tax net favorable PPD for the three months ended September 30, 2023, was $200 million, including adverse development of $116 million in long-tail lines, with $50 million related to legacy environmental exposures. Net favorable development of $316 million in short-tail lines is primarily in property lines.

Pre-tax net favorable PPD for the nine months ended September 30, 2023, was $596 million, including adverse development of $50 million related to legacy environmental exposures and $49 million for molestation claims. Excluding the adverse development, we had net favorable development of $695 million with 5 percent in long-tail lines, principally from accident years 2013 through 2019, and 95 percent in short-tail lines, primarily in property, A&H, and surety lines.

Pre-tax net favorable PPD for the three months ended September 30, 2022, was $222 million, including adverse development of $52 million related to legacy environmental exposures. Excluding the adverse development, we had favorable development of $274 million, with 5 percent in long-tail lines, principally from accident years 2018 and prior, and 95 percent in short-tail lines, primarily in property lines.

Pre-tax net favorable PPD for the nine months ended September 30, 2022, was $709 million, including adverse development of $155 million for molestation claims, predominantly reviver statute-related, and adverse development of $52 million related to legacy environmental exposures. The molestation adverse development includes no change to the previously established reserve for the Boy Scouts of America settlement. Excluding the adverse development, we had favorable development of $916 million with 29 percent in long-tail lines, principally from accident years 2018 and prior, and 71 percent in short-tail lines, primarily in property and A&H lines.

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Refer to the prior period development discussion in Note 8 to the Consolidated Financial Statements for additional information.

P&C Combined Ratio

In evaluating our segments, excluding Life Insurance financial performance, we use the P&C combined ratio. We calculate this ratio by dividing the respective expense amounts by net premiums earned. We do not calculate this ratio for the Life Insurance segment as we do not use this measure to monitor or manage that segment. A P&C combined ratio under 100 percent indicates underwriting income, and a combined ratio exceeding 100 percent indicates underwriting loss.

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
Loss and loss expense ratio
CAY loss ratio excluding catastrophe losses	60.1	%	60.6	%	58.0	%	58.4	%
Catastrophe losses	5.9	%	11.4	%	5.0	%	6.6	%
Prior period development	(2.0)	%	(2.4)	%	(2.1)	%	(3.0)	%
Loss and loss expense ratio	64.0	%	69.6	%	60.9	%	62.0	%
Policy acquisition cost ratio	16.9	%	16.6	%	17.8	%	17.7	%
Administrative expense ratio	7.5	%	6.9	%	8.1	%	7.8	%
P&C Combined ratio	88.4	%	93.1	%	86.8	%	87.5	%

The loss and loss expense ratio decreased for the three and nine months ended September 30, 2023, reflecting lower catastrophe losses, partially offset by lower favorable prior period development. The CAY loss ratio excluding catastrophe losses decreased for the three and nine months ended September 30, 2023, primarily from a higher percentage of net premiums earned from lines with a lower loss ratio.

The policy acquisition cost ratio increased for the three months ended September 30, 2023, primarily due to changes in mix of business away from products that have a lower acquisition cost ratio.

The administrative expense ratio increased for the three and nine months ended September 30, 2023, primarily due to higher pension expenses and higher employee-related expenses, partially offset by the favorable impact of higher net premiums earned. The increase in pension expense reflects the adverse impact of market conditions in 2022 and will continue through 2023.

Policy benefits

Policy benefits represent losses on contracts classified as long-duration and generally include accident and supplemental health products, term and whole life products, endowment products, and annuities. Policy benefits for the three and nine months ended September 30, 2023, include the results of Huatai Group from July 1, 2023. In addition, Policy benefits for the three and nine months ended September 30, 2023, include the results of Cigna's business acquired during the third quarter of 2022. Refer to the Life Insurance segment operating results section for further discussion.

For the three months ended September 30, 2023 and 2022, Policy benefits were $938 million and $707 million, respectively, which include (gains) losses from fair value changes in separate account liabilities that do not qualify for separate account reporting under GAAP of $(19) million and $(67) million, respectively. The offsetting movements of these liabilities are recorded in Other (income) expense on the Consolidated statements of operations. Excluding the separate account gains and losses, Policy benefits were $957 million and $774 million for the three months ended September 30, 2023 and 2022, respectively.

For the nine months ended September 30, 2023 and 2022, Policy benefits were $2,565 million and $1,441 million, respectively, which include (gains) losses from fair value changes in separate account liabilities that do not qualify for separate account reporting under GAAP of $(56) million and $(116) million, respectively. The offsetting movements of these liabilities are recorded in Other (income) expense on the Consolidated statements of operations. Excluding the separate account gains and losses, Policy benefits were $2,621 million and $1,557 million for the nine months ended September 30, 2023 and 2022, respectively.

Refer to the respective sections that follow for a discussion of Net investment income, Other (income) expense, Net realized gains (losses), Amortization of purchased intangibles, and Income tax expense.

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Segment Operating Results – Three and Nine Months Ended September 30, 2023 and 2022

We operate through six business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. For more information on our segments refer to “Segment Information” under Item 1 in our 2022 Form 10-K.

North America Commercial P&C Insurance

The North America Commercial P&C Insurance segment comprises operations that provide P&C insurance and services to large, middle market, and small commercial businesses in the U.S., Canada, and Bermuda. This segment includes our North America Major Accounts and Specialty Insurance division (large corporate accounts and wholesale business), and the North America Commercial Insurance division (principally middle market and small commercial accounts).

	Three Months Ended									Nine Months Ended
	September 30						% Change			September 30						% Change
(in millions of U.S. dollars, except for percentages)	2023			2022			Q-23 vs. Q-22			2023			2022			YTD-23 vs. YTD-22
Net premiums written	$	5,132		$	4,722		8.7		%	$	14,575		$	13,426		8.6		%
Net premiums earned	4,735			4,283			10.6		%	13,710			12,645			8.4		%
Losses and loss expenses	3,025			3,036			(0.4)		%	8,625			7,979			8.1		%
Policy acquisition costs	640			583			9.9		%	1,867			1,701			9.8		%
Administrative expenses	323			272			19.3		%	934			814			14.9		%
Underwriting income	747			392			90.7		%	2,284			2,151			6.2		%
Net investment income	780			589			32.5		%	2,204			1,600			37.7		%
Other (income) expense	6			6			—			18			12			48.3		%
Segment income	$	1,521		$	975		56.0		%	$	4,470		$	3,739		19.6		%
Loss and loss expense ratio:
CAY loss ratio excluding catastrophe losses	61.1		%	61.5		%	(0.4)	pts		60.8		%	61.5		%	(0.7)	pts
Catastrophe losses	5.2		%	14.0		%	(8.8)	pts		4.7		%	6.3		%	(1.6)	pts
Prior period development	(2.4)		%	(4.6)		%	2.2	pts		(2.6)		%	(4.7)		%	2.1	pts
Loss and loss expense ratio	63.9		%	70.9		%	(7.0)	pts		62.9		%	63.1		%	(0.2)	pts
Policy acquisition cost ratio	13.5		%	13.6		%	(0.1)	pts		13.6		%	13.5		%	0.1	pts
Administrative expense ratio	6.8		%	6.4		%	0.4	pts		6.8		%	6.4		%	0.4	pts
Combined ratio	84.2		%	90.9		%	(6.7)	pts		83.3		%	83.0		%	0.3	pts

Catastrophe Losses and Prior Period Development	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Catastrophe losses	$	246	$	598	$	639	$	803
Favorable prior period development	$	84	$	166	$	302	$	561

Catastrophe losses through September 30, 2023 and 2022, were primarily from the following events:

•2023: U.S. flooding, hail, tornadoes, wind events, winter storm losses, and Hawaii wildfires.

•2022: Hurricane Ian losses, severe weather-related events and winter storm losses in the U.S.

Refer to Note 8 in the Consolidated Financial Statements for detail on prior period development.

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Premiums

Net premiums written increased $410 million, or 8.7 percent, and $1,149 million, or 8.6 percent for the three and nine months ended September 30, 2023, respectively, reflecting strong premium retention, including both rate and exposure increases, strong new business, as well as an increase in workers' compensation audit exposure in the current year. The increase in premiums was across most lines of business, most notably in property, but also in casualty and commercial multiple peril.

Net premiums earned increased $452 million, or 10.6 percent, and $1,065 million, or 8.4 percent for the three and nine months ended September 30, 2023, respectively, reflecting the growth in net premiums written described above.

Combined Ratio

The CAY loss ratio excluding catastrophe losses decreased for the three and nine months ended September 30, 2023, primarily from a higher percentage of net premiums earned from lines that have a lower loss ratio. The loss and loss expense ratio decreased for the three and nine months ended September 30, 2023, primarily from lower catastrophe losses and a higher percentage of premiums earned from lines that have a lower loss ratio, partially offset by lower favorable prior period development. Refer to Note 8 in the Consolidated Financial Statements for detail on prior period development.

The administrative expense ratio increased for the three and nine months ended September 30, 2023, primarily from higher pension expenses and higher employee-related expenses, partially offset by the favorable impact of higher net premiums earned. The increase in pension expense reflects the adverse impact of market conditions in 2022, and will continue through 2023.

North America Personal P&C Insurance

The North America Personal P&C Insurance segment comprises operations that provide high net worth personal lines products, including homeowners and complementary products such as valuable articles, excess liability, automobile, and recreational marine insurance and services in the U.S. and Canada.

	Three Months Ended									Nine Months Ended
	September 30						% Change			September 30						% Change
(in millions of U.S. dollars, except for percentages)	2023			2022			Q-23 vs. Q-22			2023			2022			YTD-23 vs. YTD-22
Net premiums written	$	1,527		$	1,392		9.6		%	$	4,404		$	3,998		10.1		%
Net premiums earned	1,407			1,334			5.5		%	4,084			3,852			6.0		%
Losses and loss expenses	900			857			5.1		%	2,634			2,343			12.4		%
Policy acquisition costs	287			274			4.6		%	836			792			5.6		%
Administrative expenses	84			71			18.9		%	247			213			15.7		%
Underwriting income	136			132			2.6		%	367			504			(27.3)		%
Net investment income	94			76			23.5		%	262			199			31.3		%
Other (income) expense	2			1			NM			2			3			NM
Amortization of purchased intangibles	3			2			NM			8			7			NM
Segment income	$	225		$	205		10.5		%	$	619		$	693		(10.6)		%
Loss and loss expense ratio:
CAY loss ratio excluding catastrophe losses	52.4		%	53.6		%	(1.2)	pts		53.4		%	53.5		%	(0.1)	pts
Catastrophe losses	19.8		%	20.6		%	(0.8)	pts		14.3		%	12.2		%	2.1	pts
Prior period development	(8.3)		%	(10.0)		%	1.7	pts		(3.2)		%	(4.9)		%	1.7	pts
Loss and loss expense ratio	63.9		%	64.2		%	(0.3)	pts		64.5		%	60.8		%	3.7	pts
Policy acquisition cost ratio	20.4		%	20.6		%	(0.2)	pts		20.5		%	20.6		%	(0.1)	pts
Administrative expense ratio	6.0		%	5.3		%	0.7	pts		6.0		%	5.5		%	0.5	pts
Combined ratio	90.3		%	90.1		%	0.2	pts		91.0		%	86.9		%	4.1	pts

NM - Not meaningful

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Catastrophe Losses and Prior Period Development	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Catastrophe losses	$	280	$	274	$	586	$	469
Favorable prior period development	$	119	$	133	$	135	$	187

Catastrophe losses through September 30, 2023 and 2022, were primarily from the following events:

•2023: U.S. flooding, hail, tornadoes, wind events, winter storm losses, and Hawaii wildfires.

•2022: Hurricane Ian losses, severe weather-related events in the U.S. and Colorado wildfires.

Refer to Note 8 in the Consolidated Financial Statements for detail on prior period development.

Premiums

Net premiums written increased $135 million, or 9.6 percent, and $406 million, or 10.1 percent for the three and nine months ended September 30, 2023, respectively, primarily driven by strong new business and strong renewal retention, from both rate and exposure increases, across most lines, but most notably in homeowners.

Net premiums earned increased $73 million, or 5.5 percent, and $232 million, or 6.0 percent for the three and nine months ended September 30, 2023, respectively, reflecting the growth in net premiums written described above.

Combined Ratio

The CAY loss ratio excluding catastrophe losses decreased for the three and nine months ended September 30, 2023, primarily reflecting earned rate and exposure exceeding loss cost trends, as well as lower actual loss experience in homeowners, partially offset by higher auto and excess liability losses. The loss and loss expense ratio decreased for the three months ended September 30, 2023, primarily reflecting the factors mentioned above, as well as a lower impact from catastrophe losses, partially offset by lower favorable prior period development. The loss and loss expense ratio increased for the nine months ended September 30, 2023, primarily reflecting higher catastrophe losses in the current year and lower favorable prior period development.

The administrative expense ratio increased for the three and nine months ended September 30, 2023, primarily from higher pension expenses, partially offset by the favorable impact of higher net premiums earned. The increase in pension expense reflects the adverse impact of market conditions in 2022, and will continue through 2023.

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North America Agricultural Insurance

The North America Agricultural Insurance segment comprises our North American based businesses that provide a variety of coverages in the U.S. and Canada including crop insurance, primarily Multiple Peril Crop Insurance (MPCI) and crop-hail through Rain and Hail Insurance Service, Inc. (Rain and Hail), as well as farm and ranch and specialty P&C commercial insurance products and services through our Chubb Agribusiness unit.

	Three Months Ended									Nine Months Ended
	September 30						% Change			September 30						% Change
(in millions of U.S. dollars, except for percentages)	2023			2022			Q-23 vs. Q-22			2023			2022			YTD-23 vs. YTD-22
Net premiums written	$	1,521		$	1,723		(11.7)		%	$	2,581		$	2,523		2.3		%
Net premiums earned	1,540			1,673			(8.0)		%	2,334			2,217			5.3		%
Losses and loss expenses	1,356			1,444			(6.1)		%	2,003			1,830			9.5		%
Policy acquisition costs	76			68			11.1		%	128			111			15.0		%
Administrative expenses	3			3			—			9			4			120.9		%
Underwriting income	105			158			(33.4)		%	194			272			(28.7)		%
Net investment income	12			9			47.3		%	43			23			91.7		%
Other (income) expense	—			1			NM			—			1			NM
Amortization of purchased intangibles	6			7			(2.4)		%	19			20			(2.4)		%
Segment income	$	111		$	159		(30.3)		%	$	218		$	274		(20.5)		%
Loss and loss expense ratio:
CAY loss ratio excluding catastrophe losses	87.5		%	84.0		%	3.5	pts		84.7		%	82.2		%	2.5	pts
Catastrophe losses	1.2		%	1.8		%	(0.6)	pts		1.6		%	2.3		%	(0.7)	pts
Prior period development	(0.6)		%	0.5		%	(1.1)	pts		(0.5)		%	(2.0)		%	1.5	pts
Loss and loss expense ratio	88.1		%	86.3		%	1.8	pts		85.8		%	82.5		%	3.3	pts
Policy acquisition cost ratio	4.9		%	4.1		%	0.8	pts		5.5		%	5.1		%	0.4	pts
Administrative expense ratio	0.2		%	0.2		%	—	pts		0.4		%	0.2		%	0.2	pts
Combined ratio	93.2		%	90.6		%	2.6	pts		91.7		%	87.8		%	3.9	pts

NM - Not meaningful

Catastrophe Losses and Prior Period Development	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Catastrophe losses	$	18	$	31	$	37	$	52
Favorable (unfavorable) prior period development	$	9	$	(9)	$	12	$	17

Catastrophe losses through September 30, 2023 and 2022, were primarily from the following events:

•2023: U.S. flooding, hail, tornadoes, and wind events.

•2022: Hurricane Ian losses, severe weather-related events in Chubb Agribusiness, and winter storm losses in the U.S.

Refer to Note 8 in the Consolidated Financial Statements for detail on prior period development.

Premiums

Net premiums written decreased $202 million, or 11.7 percent for the three months ended September 30, 2023, mainly due to the timing of premium recognition this year versus last year, and a modest increase in the premium the company shared with the Federal Government. Net premiums written increased $58 million, or 2.3 percent for the nine months ended September 30, 2023, reflecting the return of premium to the U.S. government of $161 million in the first quarter of 2022 as part of a profit-sharing agreement and strong new business in Chubb Agribusiness, partially offset by higher cessions to the U.S. government in

74

the current year. Under the profit-sharing agreement, we returned additional premiums to the government because of the lower losses experienced in certain states in 2021.

Net premiums earned decreased $133 million, or 8.0 percent for the three months ended September 30, 2023, and increased $117 million, or 5.3 percent for the nine months ended September 30, 2023, reflecting the factors described above.

Combined Ratio

The CAY loss ratio excluding catastrophe losses increased for the three and nine months ended September 30, 2023, which contemplates a lower underwriting gain for the current crop year, partially offset by the year-over-year impact of crop commodity price hedge activity, which had a favorable impact of 0.7 percentage points and 0.2 percentage points, respectively. Estimated development for the current crop year was recognized this quarter compared to the fourth quarter in the prior year. The loss and loss expense ratio increased for the three and nine months ended September 30, 2023, reflecting the factors mentioned above. The increase for the three months ended September 30, 2023, was partially offset by favorable prior period development, compared with unfavorable prior period development in the prior year, and lower catastrophe losses. The increase in loss and loss expense ratio for the nine months ended September 30, 2023, also reflects the prior year impact of the return of premium to the U.S. government mentioned above, which had a corresponding reduction in incurred losses, and lower favorable prior period development, partially offset by lower catastrophe losses.

The policy acquisition cost ratio increased for the three and nine months ended September 30, 2023, reflecting changes in mix of business away from products that have a lower acquisition cost ratio.

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Overseas General Insurance

Overseas General Insurance segment comprises Chubb International and Chubb Global Markets (CGM). Chubb International comprises our international commercial P&C traditional and specialty lines serving large corporations, middle market and small customers; A&H and traditional and specialty personal lines business serving local territories outside the U.S., Bermuda, and Canada. CGM, our London-based international commercial P&C excess and surplus lines business, includes Lloyd's of London (Lloyd's) Syndicate 2488. Chubb provides funds at Lloyd's to support underwriting by Syndicate 2488 which is managed by Chubb Underwriting Agencies Limited. Effective July 1, 2023, the Overseas General Insurance segment includes 100 percent of the results of Huatai Group's P&C business as required under consolidation accounting. We previously included our share of Huatai results based on our equity method investment within Other (income) expense.

	Three Months Ended									Nine Months Ended
	September 30						% Change			September 30						% Change
(in millions of U.S. dollars, except for percentages)	2023			2022			Q-23 vs. Q-22			2023			2022			YTD-23 vs. YTD-22
Net premiums written	$	3,211		$	2,645		21.4		%	$	9,359		$	8,364		11.9		%
Net premiums written - constant dollars							17.3		%							12.7		%
Net premiums earned	3,311			2,741			20.8		%	9,005			8,065			11.7		%
Loss and loss expenses	1,635			1,333			22.7		%	4,139			3,772			9.7		%
Policy benefits	91			108			(15.7)		%	338			282			19.9		%
Policy acquisition costs	827			720			14.8		%	2,286			2,096			9.1		%
Administrative expenses	327			264			24.3		%	899			811			10.9		%
Underwriting income	431			316			36.2		%	1,343			1,104			21.7		%
Net investment income	248			151			63.6		%	636			460			38.2		%
Other (income) expense	(10)			(2)			NM			(29)			3			NM
Amortization of purchased intangibles	19			12			52.4		%	52			40			27.6		%
Segment income	$	670		$	457		46.7		%	$	1,956		$	1,521		28.6		%
Loss and loss expense ratio:
CAY loss ratio excluding catastrophe losses	50.0		%	49.2		%	0.8	pts		49.7		%	49.5		%	0.2	pts
Catastrophe losses	3.6		%	3.6		%	—	pts		2.9		%	3.7		%	(0.8)	pts
Prior period development	(1.5)		%	(0.2)		%	(1.3)	pts		(2.9)		%	(2.9)		%	—	pts
Loss and loss expense ratio	52.1		%	52.6		%	(0.5)	pts		49.7		%	50.3		%	(0.6)	pts
Policy acquisition cost ratio	25.0		%	26.3		%	(1.3)	pts		25.4		%	26.0		%	(0.6)	pts
Administrative expense ratio	9.9		%	9.6		%	0.3	pts		10.0		%	10.0		%	—	pts
Combined ratio	87.0		%	88.5		%	(1.5)	pts		85.1		%	86.3		%	(1.2)	pts

NM - Not meaningful

Catastrophe Losses and Prior Period Development

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Catastrophe losses	$	120	$	98	$	259	$	298
Favorable prior period development	$	49	$	5	$	253	$	238

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Catastrophe losses through September 30, 2023 and 2022, were primarily from the following events:

•2023: Storms in New Zealand and international weather-related events.

•2022: Hurricane Ian losses, International weather-related events, and storms in Australia.

Refer to Note 8 to the Consolidated Financial Statements for detail on prior period development.

Net Premiums Written by Region	Three months ended September 30
(in millions of U.S. dollars, except for percentages)	2023		2023  % of Total		2022		2022 % of Total		C$ 2022		Q-23 vs. Q-22		C$ Q-23 vs. Q-22
Region
Europe, Middle East, and Africa	$	1,264	39	%	$	1,133	43	%	$	1,176	11.5	%	7.5	%
Latin America	695		22	%	565		21	%	628		23.0	%	10.7	%
Asia Pacific (1)	1,099		34	%	816		31	%	809		34.5	%	35.9	%
Japan	102		3	%	101		4	%	96		0.9	%	5.5	%
Other (2)	51		2	%	30		1	%	29		77.7	%	76.6	%
Net premiums written	$	3,211	100	%	$	2,645	100	%	$	2,738	21.4	%	17.3	%

	Nine months ended September 30
(in millions of U.S. dollars, except for percentages)	2023		2023  % of Total		2022		2022 % of Total		C$ 2022		Y-23 vs. Y-22		C$ Y-23 vs. Y-22
Region
Europe, Middle East, and Africa	$	4,292	46	%	$	3,990	48	%	$	3,921	7.6	%	9.4	%
Latin America	1,969		21	%	1,719		21	%	1,827		14.5	%	7.8	%
Asia Pacific (1)	2,644		28	%	2,192		26	%	2,127		20.6	%	24.3	%
Japan	349		4	%	359		4	%	328		(2.8)	%	6.2	%
Other (2)	105		1	%	104		1	%	101		1.8	%	3.8	%
Net premiums written	$	9,359	100	%	$	8,364	100	%	$	8,304	11.9	%	12.7	%

(1)    2023 includes the consolidated results of Huatai P&C effective July 1,2023.

(2)    Includes the international supplemental A&H business of Combined Insurance and other international operations.

Premiums

Overall, net premiums written increased $566 million and $995 million, or $473 million and $1,055 million on a constant dollar basis, for the three and nine months ended September 30, 2023, respectively, reflecting growth in both commercial and consumer lines. For the three and nine months ended September 30, 2023, commercial lines grew 17.0 percent and 10.5 percent, or 14.6 percent and 12.4 percent on a constant-dollar basis, respectively, and consumer lines grew 28.4 percent and 14.1 percent, or 21.4 percent and 13.2 percent on a constant-dollar basis, respectively.

Our European division increased for the three and nine months ended September 30, 2023, supported by both our wholesale and retail divisions. The growth in commercial lines was primarily driven by higher new business, and positive rate increases, including commercial property and casualty lines. Consumer lines increased primarily due to increased travel volume in A&H.

Latin America increased for the three and nine months ended September 30, 2023, driven by growth in commercial lines due to exposure increases, positive rate increases, and new business, primarily property and casualty lines. Growth in consumer was driven by an increase in personal lines.

Asia Pacific increased for the three and nine months ended September 30, 2023, reflecting the consolidation of Huatai Group's P&C business effective July 1, 2023, higher new business, higher retention and positive rate increases in commercial lines, primarily property and casualty lines. Growth in consumer lines is attributable to the acquisition of Cigna's business in Asia, as well as increased travel in A&H.

Japan increased for the three and nine months ended September 30, 2023, on a constant-dollar basis, primarily from higher new business in A&H.

77

Net premiums earned increased $570 million and $940 million, or $460 million and $956 million on a constant-dollar basis, for the three and nine months ended September 30, 2023, respectively, reflecting the increase in net premiums written described above.

Combined Ratio

The loss and loss expense ratio decreased for the three months ended September 30, 2023, due to higher favorable prior period development. The loss and loss expense ratio decreased for the nine months ended September 30, 2023, due to lower catastrophe losses. The CAY loss ratio excluding catastrophe losses increased for the three and nine months ended September 30, 2023, primarily due to higher losses in personal lines.

The policy acquisition cost ratio decreased for the three and nine months ended September 30, 2023, primarily due to a change in the mix of business, including higher premiums earned from commercial lines that have a lower acquisition cost ratio than consumer lines.

The administrative expense ratio increased for the three months ended September 30, 2023, reflecting the impact from the consolidation of Huatai Group's P&C business effective July 1, 2023.

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Global Reinsurance

The Global Reinsurance segment represents our reinsurance operations comprising Chubb Tempest Re Bermuda, Chubb Tempest Re USA, Chubb Tempest Re International, and Chubb Tempest Re Canada. Global Reinsurance markets its reinsurance products worldwide primarily through reinsurance brokers under the Chubb Tempest Re brand name and provides a broad range of traditional and non-traditional reinsurance coverage to a diverse array of primary P&C companies.

	Three Months Ended									Nine Months Ended
	September 30						% Change			September 30						% Change
(in millions of U.S. dollars, except for percentages)	2023			2022			Q-23 vs. Q-22			2023			2022			YTD-23 vs. YTD-22
Net premiums written	$	261		$	265		(1.4)		%	$	831		$	780		6.5		%
Net premiums written - constant dollars							(1.8)		%							6.9		%
Net premiums earned	239			255			(6.5)		%	720			712			1.0		%
Losses and loss expenses	116			311			(62.9)		%	319			565			(43.6)		%
Policy acquisition costs	69			59			18.6		%	196			178			10.2		%
Administrative expenses	9			8			4.2		%	27			27			—
Underwriting income	45			(123)			NM			178			(58)			NM
Net investment income	47			71			(34.4)		%	144			232			(37.9)		%
Other (income) expense	—			—			—			(1)			1			NM
Segment income (loss)	$	92		$	(52)		NM			$	323		$	173		86.7		%
Loss and loss expense ratio:
CAY loss ratio excluding catastrophe losses	45.9		%	49.6		%	(3.7)	pts		47.2		%	49.8		%	(2.6)	pts
Catastrophe losses	2.6		%	72.6		%	(70.0)	pts		1.0		%	26.1		%	(25.1)	pts
Prior period development	(0.1)		%	(0.1)		%	—	pts		(3.9)		%	3.5		%	(7.4)	pts
Loss and loss expense ratio	48.4		%	122.1		%	(73.7)	pts		44.3		%	79.4		%	(35.1)	pts
Policy acquisition cost ratio	29.1		%	22.9		%	6.2	pts		27.2		%	25.0		%	2.2	pts
Administrative expense ratio	3.8		%	3.4		%	0.4	pts		3.8		%	3.8		%	—	pts
Combined ratio	81.3		%	148.4		%	(67.1)	pts		75.3		%	108.2		%	(32.9)	pts

NM - not meaningful

Catastrophe Losses and Prior Period Development

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S dollars)	2023		2022		2023		2022
Catastrophe losses	$	6	$	157	$	7	$	160
Favorable (unfavorable) prior period development	$	—	$	—	$	25	$	(22)

Catastrophe losses through September 30, 2023 and 2022, were primarily from the following events:

•2023: Hurricane Idalia.

•2022: Hurricane Ian, and storms in Australia and Canada.

Refer to Note 8 in the Consolidated Financial Statements for detail on prior period development.

Premiums

Net premiums written decreased $4 million for the three months ended September 30, 2023, as continued growth in the portfolio, primarily in property lines, was more than offset by the impact of catastrophe reinstatement premiums recognized in the prior year. Net premiums written increased $51 million for the nine months ended September 30, 2023 reflecting continued growth in the portfolio, primarily in property lines, partially offset by the impact of catastrophe reinstatement premiums recognized in the prior year.

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Net premiums earned decreased $16 million and increased $8 million for the three and nine months ended September 30, 2023, respectively, primarily reflecting the changes in net premiums written described above. The change in net premiums earned also reflects the impact of catastrophe reinstatement premiums recognized in the prior year, which are fully earned when written.

Combined Ratio

The loss and loss expense ratio decreased for the three and nine months ended September 30, 2023, mainly from lower catastrophe losses. The decrease in the loss and loss expense ratio for the nine months ended September 30, 2023, also reflects favorable prior period development compared with unfavorable development in the prior year period. The CAY loss ratio excluding catastrophe losses decreased for the three and nine months ended September 30, 2023, primarily from an improvement in market conditions in several lines of business, including property, casualty, and workers' compensation lines.

The policy acquisition cost ratio increased for the three and nine months ended September 30, 2023, primarily due to lower catastrophe reinstatement premiums recognized in the prior year, which have a lower acquisition cost ratio.

The administrative expense ratio increased for the three months ended September 30, 2023, reflecting the impact of lower net premiums earned, as described above.

Life Insurance

The Life Insurance segment comprises our international life operations, which commencing in the third quarter of 2022, includes Cigna's A&H and life business in Korea, Taiwan, New Zealand, Hong Kong, and Indonesia, acquired on July 1, 2022. Effective July 1, 2023, the Life Insurance segment includes 100 percent of the results of Huatai Group's life and asset management business as required under consolidation accounting. We previously included our share of Huatai results based on our equity method investment within Other (income) expense. The Life Insurance segment also includes Chubb Tempest Life Re (Chubb Life Re), and the North American supplemental A&H and life business of Combined Insurance. Results for the three and nine months ended September 30, 2022, respectively, are adjusted to reflect the adoption of LDTI. Refer to Note 1 c).

	Three Months Ended						Nine Months Ended
	September 30				% Change		September 30				% Change
(in millions of U.S. dollars, except for percentages)	2023		2022		Q-23 vs. Q-22		2023		2022		YTD-23 vs. YTD-22
Net premiums written	$	1,452	$	1,265	14.9	%	$	4,015	$	2,403	67.1	%
Net premiums written - constant dollars					15.2	%					68.4	%
Net premiums earned	1,442		1,244		15.9	%	3,962		2,325		70.4	%
Losses and loss expenses	20		27		(29.6)	%	87		78		11.5	%
Policy benefits	866		666		30.2	%	2,283		1,275		79.1	%
Policy acquisition costs	279		266		5.1	%	829		537		54.3	%
Administrative expenses	216		174		23.0	%	553		346		59.5	%
Net investment income	211		147		42.5	%	525		359		45.9	%
Other (income) expense	(28)		4		NM		(69)		(38)		90.3	%
Amortization of purchased intangibles	12		2		NM		18		7		170.6	%
Segment income	$	288	$	252	14.8	%	$	786	$	479	64.6	%

NM - not meaningful

Premiums

Net premiums written increased $187 million and $1,612 million, or $191 million and $1,631 million on a constant-dollar basis, for the three and nine months ended September 30, 2023, respectively.

For our international life operations, net premiums written increased 19.7 percent for the three months ended September 30, 2023, primarily due to the consolidation of Huatai Group's life business which contributed $149 million or 14.8 percentage points, and growth in Asia and Latin America. Our international life operations net premiums written increased 101.8 percent

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for the nine months ended September 30, 2023, primarily due to the acquisition of Cigna's business in Asia, underlying growth in existing business from Latin America bank distribution channels, and Asia agency and partnership channels.

Net premiums written in our North American Combined Insurance business declined 3.9 percent and 5.5 percent, for the three and nine months ended September 30, 2023, respectively, as growth in the supplemental A&H business was more than offset by the non-renewal of a large program.

Deposits

The following table presents deposits collected on universal life and investment contracts:

	Three Months Ended										Nine Months Ended
	September 30						% Change				September 30						% Change
(in millions of U.S. dollars, except for percentages)	2023		2022		C$ 2022		Q-23 vs. Q-22		C$ Q-23 vs. Q-22		2023		2022		C$ 2022		Y-23 vs. Y-22		C$  Y-23 vs. Y-22
Deposits collected on universal life and investment contracts	$	388	$	449	$	433	(13.4)	%	(10.2)	%	$	1,097	$	1,433	$	1,352	(23.4)	%	(18.8)	%

Deposits collected on universal life and investment contracts (life deposits) are not reflected as revenues in our Consolidated statements of operations in accordance with GAAP. New life deposits are an important component of production, and although they do not significantly affect current period income from operations, they are key to our efforts to grow our business. Life deposits collected decreased $61 million and $336 million for the three and nine months ended September 30, 2023, respectively, primarily in Taiwan, reflecting challenging market conditions for deposit products due to market volatility and a rapid increase in interest rates. The decrease in collections was partially offset by deposit growth from the consolidation of Huatai Group.

Life Insurance segment income

Life Insurance segment income increased $36 million for the three months ended September 30, 2023 reflecting the growth in premiums described above, higher net investment income and higher income from Huatai. Life Insurance segment income growth of $307 million for the nine months ended September 30, 2023, also reflects the acquisition of Cigna's business in Asia in the third quarter of 2022, and higher net investment income due to a higher invested asset base.

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Corporate

Corporate results primarily include the results of our non-insurance companies, income and expenses not attributable to reportable segments and loss and loss expenses of asbestos and environmental (A&E) liabilities and certain other non-A&E run-off exposures, including molestation. Effective July 1, 2023, 100 percent of Huatai Group’s non-insurance operations results, comprising real estate and holding company activity, are included in Corporate. Results for the three and nine months ended September 30, 2022, are adjusted to reflect the adoption of LDTI. Refer to Note 1 c).

	Three Months Ended						Nine Months Ended
	September 30				% Change		September 30				% Change
(in millions of U.S. dollars, except for percentages)	2023		2022		Q-23 vs. Q-22		2023		2022		YTD-23 vs. YTD-22
Losses and loss expenses	$	61	$	74	(16.0)	%	$	133	$	275	(51.5)	%
Administrative expenses	98		91		6.7	%	290		264		9.7	%
Underwriting loss	159		165		(3.4)	%	423		539		(21.5)	%
Net investment income (loss)	14		5		NM		28		(4)		NM
Other (income) expense	(51)		194		NM		(251)		73		NM
Amortization of purchased intangibles	44		46		(1.7)	%	129		137		(4.9)	%
Net realized gains (losses)	(96)		(437)		(78.0)	%	(481)		(927)		(48.0)	%
Market risk benefits gains (losses)	(32)		69		NM		(154)		85		NM
Interest expense	174		150		15.6	%	499		416		19.8	%
Cigna integration expenses	14		23		(38.8)	%	51		26		99.4	%
Income tax expense	413		263		57.2	%	1,189		907		31.1	%
Net loss	(867)		(1,204)		(27.8)	%	(2,647)		(2,944)		(10.0)	%
Net loss attributable to noncontrolling interests	(3)		—		NM		(3)		—		NM
Net loss attributable to Chubb	$	(864)	$	(1,204)	(28.0)	%	$	(2,644)	$	(2,944)	(10.1)	%

NM - not meaningful

Losses and loss expenses primarily includes unfavorable prior period development for molestation claims and legacy environmental claims.

Administrative expenses increased $7 million and $26 million for the three and nine months ended September 30, 2023, respectively, primarily due to increased spending to support digital growth initiatives.

Cigna integration expenses of $14 million and $51 million for the three and nine months ended September 30, 2023, respectively, principally comprised legal and professional fees and all other costs directly related to the integration activities of the Cigna acquisition. These expenses are one-time in nature and are not related to the on-going business activities of the segments. The Chief Executive Officer does not manage segment results or allocate resources to segments when considering these costs and they are therefore excluded from our definition of segment income.

Refer to the respective sections that follow for a discussion of Net realized gains (losses), Net investment income (loss), Amortization of purchased intangibles, and Income tax expense (benefit). Refer to Notes 11 and 17 to the Consolidated Financial Statements for additional information on Market risk benefits gains (losses) and Other (income) expense, respectively.

Net Realized and Unrealized Gains (Losses)

We take a long-term view with our investment strategy, and our investment managers manage our investment portfolio to maximize total return within specific guidelines designed to minimize risk. The majority of our investment portfolio is available for sale and reported at fair value.

The effect of market movements on our fixed maturities portfolio impacts Net income (through Net realized gains (losses)) when securities are sold, when we write down an asset, or when we record a change to the valuation allowance for expected credit losses. For a further discussion related to how we assess the valuation allowance for expected credit losses and the related impact on Net income, refer to Note 1 e) to the Consolidated Financial Statements in our 2022 Form 10-K. Additionally, Net

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income is impacted through the reporting of changes in the fair value of public and private equity securities and derivatives, including financial futures, options, and swaps. Changes in unrealized appreciation and depreciation on available for sale securities, resulting from the revaluation of securities held, changes in cumulative foreign currency translation adjustment, changes in current discount rate on future policy benefits, changes in instrument-specific credit risk on market risk benefits, unrealized postretirement benefit obligations liability adjustment, and cross-currency swaps designated as hedges for accounting purposes are reported as separate components of Accumulated other comprehensive income (loss) in Shareholders’ equity in the Consolidated balance sheets.

The following tables present our net realized and unrealized gains (losses):

	Three Months Ended September 30
					2023						2022
							(As Adjusted)
(in millions of U.S. dollars)	Net Realized Gains (Losses)		Net Unrealized Gains (Losses)		Net Impact		Net Realized Gains (Losses)		Net Unrealized Gains (Losses)		Net Impact
Fixed maturities	$	(70)	$	(2,181)	$	(2,251)	$	(279)	$	(3,045)	$	(3,324)
Fixed income and investment derivatives	9		—		9		(198)		—		(198)
Public equity
Sales	(45)		—		(45)		(12)		—		(12)
Mark-to-market	(55)		—		(55)		(68)		—		(68)
Private equity (less than 3 percent ownership)
Mark-to-market	40		—		40		(42)		—		(42)
Total investment portfolio	(121)		(2,181)		(2,302)		(599)		(3,045)		(3,644)
Other derivatives	(7)		—		(7)		(19)		—		(19)
Foreign exchange	(67)		(317)		(384)		202		(942)		(740)
Current discount rate on future policy benefits	—		683		683		—		479		479
Instrument-specific credit risk on market risk benefits	—		(5)		(5)		—		8		8
Other (1)	92		48		140		(40)		(59)		(99)
Net (losses), pre-tax	$	(103)	$	(1,772)	$	(1,875)	$	(456)	$	(3,559)	$	(4,015)

(1)The three months ended September 30, 2023 includes a one-time realized gain of $116 million as a result of the consolidation of Huatai Group.

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	Nine Months Ended September 30
					2023						2022
							(As Adjusted)
(in millions of U.S. dollars)	Net Realized Gains (Losses)		Net Unrealized Gains (Losses)		Net Impact		Net Realized Gains (Losses)		Net Unrealized Gains (Losses)		Net Impact
Fixed maturities	$	(357)	$	(1,589)	$	(1,946)	$	(857)	$	(12,041)	$	(12,898)
Fixed income and investment derivatives	(92)		—		(92)		(232)		—		(232)
Public equity
Sales	(48)		—		(48)		406		—		406
Mark-to-market	(13)		—		(13)		(693)		—		(693)
Private equity (less than 3 percent ownership)
Mark-to-market	75		—		75		17		—		17
Total investment portfolio	(435)		(1,589)		(2,024)		(1,359)		(12,041)		(13,400)
Other derivatives	(6)		—		(6)		(9)		—		(9)
Foreign exchange	(122)		(279)		(401)		546		(1,631)		(1,085)
Current discount rate on future policy benefits	—		497		497		—		1,546		1,546
Instrument-specific credit risk on market risk benefits	—		3		3		—		48		48
Other (1)	79		63		142		(114)		(35)		(149)
Net gains (losses), pre-tax	$	(484)	$	(1,305)	$	(1,789)	$	(936)	$	(12,113)	$	(13,049)

(1)The nine months ended September 30, 2023 Includes a one-time realized gain of $116 million as a result of the consolidation of Huatai Group.

Pre-tax net unrealized losses of $2,181 million and $1,589 million in our investment portfolio for the three and nine months ended September 30, 2023, respectively, were primarily driven by higher interest rates. Refer to Note 3 a) to the Consolidated Financial Statements.

Pre-tax net realized losses of $484 million for the nine months ended September 30, 2023 mainly comprised losses from sales and impairments of fixed maturities and derivative losses, as well as foreign exchange losses.

Effective Income Tax Rate

Our effective tax rate (ETR) reflects a mix of income or losses in jurisdictions with a wide range of tax rates, permanent differences between GAAP and local tax laws, and the impact of discrete items. A change in the geographic mix of earnings could impact our ETR.

For the three and nine months ended September 30, 2023, our ETR was 16.8 percent and 17.2 percent, respectively. This compares to an ETR of 24.9 percent and 18.7 percent for the three and nine months ended September 30, 2022, respectively. The ETR for each period was impacted by our mix of earnings among various jurisdictions, most notably related to realized gains/(losses), the impact of the consolidation of Huatai Group, and an increase in the enacted UK tax rate, offset by discrete tax items.

Non-GAAP Reconciliation

In presenting our results, we included and discussed certain non-GAAP measures. These non-GAAP measures, which may be defined differently by other companies, are important for an understanding of our overall results of operations and financial condition. However, they should not be viewed as a substitute for measures determined in accordance with GAAP.

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We provide financial measures, including net premiums written, net premiums earned, and underwriting income on a constant-dollar basis. We believe it is useful to evaluate the trends in our results exclusive of the effect of fluctuations in exchange rates between the U.S. dollar and the currencies in which our international business is transacted, as these exchange rates could fluctuate significantly between periods and distort the analysis of trends. The impact is determined by assuming constant foreign exchange rates between periods by translating prior period results using the same local currency exchange rates as the comparable current period.

P&C performance metrics comprise consolidated operating results (including Corporate) and exclude the operating results of the Life Insurance segment. We believe that these measures are useful and meaningful to investors as they are used by management to assess the company’s P&C operations which are the most economically similar. We exclude the Life Insurance segment because the results of this business do not always correlate with the results of our P&C operations.

P&C combined ratio is the sum of the loss and loss expense ratio, policy acquisition cost ratio and the administrative expense ratio excluding the life business and including the realized gains and losses on the crop derivatives. These derivatives were purchased to provide economic benefit, in a manner similar to reinsurance protection, in the event that a significant decline in commodity pricing impacts underwriting results. We view gains and losses on these derivatives as part of the results of our underwriting operations.

CAY P&C combined ratio excluding catastrophe losses (CATs) excludes CATs and prior period development (PPD) from the P&C combined ratio. We exclude CATs as they are not predictable as to timing and amount and PPD as these unexpected loss developments on historical reserves are not indicative of our current underwriting performance. The combined ratio numerator is adjusted to exclude CATs, net premiums earned adjustments on PPD, prior period expense adjustments and reinstatement premiums on PPD, and the denominator is adjusted to exclude net premiums earned adjustments on PPD and reinstatement premiums on CATs and PPD. In periods where there are adjustments on loss sensitive policies, these adjustments are excluded from PPD and net premiums earned when calculating the ratios. We believe this measure provides a better evaluation of our underwriting performance and enhances the understanding of the trends in our P&C business that may be obscured by these items. This measure is commonly reported among our peer companies and allows for a better comparison.

Reinstatement premiums are additional premiums paid on certain reinsurance agreements in order to reinstate coverage that had been exhausted by loss occurrences. The reinstatement premium amount is typically a pro rata portion of the original ceded premium paid based on how much of the reinsurance limit had been exhausted.

Net premiums earned adjustments within PPD are adjustments to the initial premium earned on retrospectively rated policies based on actual claim experience that develops after the policy period ends. The premium adjustments correlate to the prior period loss development on these same policies and are fully earned in the period the adjustments are recorded.

Prior period expense adjustments typically relate to adjustable commission reserves or policyholder dividend reserves based on actual claim experience that develops after the policy period ends. The expense adjustments correlate to the prior period loss development on these same policies.

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The following tables present the calculation of combined ratio, as reported for each segment to P&C combined ratio, adjusted for CATs and PPD:

		North America Commercial P&C Insurance			North America Personal P&C Insurance			North America Agricultural Insurance			Overseas General Insurance			Global Reinsurance			Corporate		Total P&C
Three Months Ended
September 30, 2023
(in millions of U.S. dollars except for ratios)
Numerator
Losses and loss expenses/policy benefits	A	$	3,025		$	900		$	1,356		$	1,726		$	116		$	61	$	7,184
Catastrophe losses and related adjustments
Catastrophe losses, net of related adjustments		(246)			(280)			(18)			(120)			(6)			—		(670)
Reinstatement premiums collected (expensed) on catastrophe losses		—			—			—			—			—			—		—
Catastrophe losses, gross of related adjustments		(246)			(280)			(18)			(120)			(6)			—		(670)
PPD and related adjustments
PPD, net of related adjustments - favorable (unfavorable)		84			119			9			49			—			(61)		200
Net premiums earned adjustments on PPD - unfavorable (favorable)		66			—			—			—			—			—		66
Expense adjustments - unfavorable (favorable)		7			—			—			—			—			—		7
PPD reinstatement premiums - unfavorable (favorable)		—			(1)			—			—			(1)			—		(2)
PPD, gross of related adjustments - favorable (unfavorable)		157			118			9			49			(1)			(61)		271
CAY loss and loss expense ex CATs	B	$	2,936		$	738		$	1,347		$	1,655		$	109		$	—	$	6,785
Policy acquisition costs and administrative expenses
Policy acquisition costs and administrative expenses	C	$	963		$	371		$	79		$	1,154		$	78		$	98	$	2,743
Expense adjustments - favorable (unfavorable)		(7)			—			—			—			—			—		(7)
CAY Policy acquisition costs and administrative expenses, adjusted	D	$	956		$	371		$	79		$	1,154		$	78		$	98	$	2,736
Denominator
Net premiums earned	E	$	4,735		$	1,407		$	1,540		$	3,311		$	239				$	11,232
Net premiums earned adjustments on PPD - unfavorable (favorable)		66			—			—			—			—					66
PPD reinstatement premiums - unfavorable (favorable)		—			(1)			—			—			(1)					(2)
Net premiums earned excluding adjustments	F	$	4,801		$	1,406		$	1,540		$	3,311		$	238				$	11,296
P&C Combined ratio
Loss and loss expense ratio	A/E	63.9		%	63.9		%	88.1		%	52.1		%	48.4		%			64.0		%
Policy acquisition cost and administrative expense ratio	C/E	20.3		%	26.4		%	5.1		%	34.9		%	32.9		%			24.4		%
P&C Combined ratio		84.2		%	90.3		%	93.2		%	87.0		%	81.3		%			88.4		%
CAY P&C Combined ratio ex CATs
Loss and loss expense ratio, adjusted	B/F	61.1		%	52.4		%	87.5		%	50.0		%	45.9		%			60.1		%
Policy acquisition cost and administrative expense ratio, adjusted	D/F	20.0		%	26.5		%	5.2		%	34.8		%	32.9		%			24.2		%
CAY P&C Combined ratio ex CATs		81.1		%	78.9		%	92.7		%	84.8		%	78.8		%			84.3		%
Combined ratio
Combined ratio																			88.3		%
Add: impact of gains and losses on crop derivatives																			0.1		%
P&C Combined ratio																			88.4		%
Note: The ratios above are calculated using whole U.S. dollars. Accordingly, calculations using rounded amounts may differ. Letters A, B, C, D, E, and F included in the table are references for calculating the ratios above.

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		North America Commercial P&C Insurance			North America Personal P&C Insurance			North America Agricultural Insurance			Overseas General Insurance			Global Reinsurance			Corporate		Total P&C
Three Months Ended
September 30, 2022
(in millions of U.S. dollars except for ratios)
Numerator
Losses and loss expenses/policy benefits	A	$	3,036		$	857		$	1,444		$	1,441		$	311		$	74	$	7,163
Catastrophe losses and related adjustments
Catastrophe losses, net of related adjustments		(598)			(274)			(31)			(98)			(157)			—		(1,158)
Reinstatement premiums collected (expensed) on catastrophe losses		—			—			—			—			55			—		55
Catastrophe losses, gross of related adjustments		(598)			(274)			(31)			(98)			(212)			—		(1,213)
PPD and related adjustments
PPD, net of related adjustments - favorable (unfavorable)		166			133			(9)			5			—			(73)		222
Net premiums earned adjustments on PPD - unfavorable (favorable)		80			—			—			—			—			—		80
Expense adjustments - unfavorable (favorable)		(1)			—			—			—			—			—		(1)
PPD, gross of related adjustments - favorable (unfavorable)		245			133			(9)			5			—			(73)		301
CAY loss and loss expense ex CATs	B	$	2,683		$	716		$	1,404		$	1,348		$	99		$	1	$	6,251
Policy acquisition costs and administrative expenses
Policy acquisition costs and administrative expenses	C	$	855		$	345		$	71		$	984		$	67		$	91	$	2,413
Expense adjustments - favorable (unfavorable)		1			—			—			—			—			—		1
CAY Policy acquisition costs and administrative expenses, adjusted	D	$	856		$	345		$	71		$	984		$	67		$	91	$	2,414
Denominator
Net premiums earned	E	$	4,283		$	1,334		$	1,673		$	2,741		$	255				$	10,286
Reinstatement premiums (collected) expensed on catastrophe losses		—			—			—			—			(55)					(55)
Net premiums earned adjustments on PPD - unfavorable (favorable)		80			—			—			—			—					80
Net premiums earned excluding adjustments	F	$	4,363		$	1,334		$	1,673		$	2,741		$	200				$	10,311
P&C Combined ratio
Loss and loss expense ratio	A/E	70.9		%	64.2		%	86.3		%	52.6		%	122.1		%			69.6		%
Policy acquisition cost and administrative expense ratio	C/E	20.0		%	25.9		%	4.3		%	35.9		%	26.3		%			23.5		%
P&C Combined ratio		90.9		%	90.1		%	90.6		%	88.5		%	148.4		%			93.1		%
CAY P&C Combined ratio ex CATs
Loss and loss expense ratio, adjusted	B/F	61.5		%	53.6		%	84.0		%	49.2		%	49.6		%			60.6		%
Policy acquisition cost and administrative expense ratio, adjusted	D/F	19.6		%	25.9		%	4.2		%	35.9		%	33.4		%			23.4		%
CAY P&C Combined ratio ex CATs		81.1		%	79.5		%	88.2		%	85.1		%	83.0		%			84.0		%
Combined ratio
Combined ratio																			92.9		%
Add: impact of gains and losses on crop derivatives																			0.2		%
P&C Combined ratio																			93.1		%
Note: The ratios above are calculated using whole U.S. dollars. Accordingly, calculations using rounded amounts may differ. Letters A, B, C, D, E, and F included in the table are references for calculating the ratios above.

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		North America Commercial P&C Insurance			North America Personal P&C Insurance			North America Agricultural Insurance			Overseas General Insurance			Global Reinsurance			Corporate		Total P&C
Nine Months Ended
September 30, 2023
(in millions of U.S. dollars except for ratios)
Numerator
Losses and loss expenses/policy benefits	A	$	8,625		$	2,634		$	2,003		$	4,477		$	319		$	133	$	18,191
Catastrophe losses and related adjustments
Catastrophe losses, net of related adjustments		(639)			(586)			(37)			(259)			(7)			—		(1,528)
Reinstatement premiums collected (expensed) on catastrophe losses		—			—			—			—			—			—		—
Catastrophe losses, gross of related adjustments		(639)			(586)			(37)			(259)			(7)			—		(1,528)
PPD and related adjustments
PPD, net of related adjustments - favorable (unfavorable)		302			135			12			253			25			(131)		596
Net premiums earned adjustments on PPD - unfavorable (favorable)		78			—			(2)			—			—			—		76
Expense adjustments - unfavorable (favorable)		14			—			—			—			—			—		14
PPD reinstatement premiums - unfavorable (favorable)		—			(2)			—			—			5			—		3
PPD, gross of related adjustments - favorable (unfavorable)		394			133			10			253			30			(131)		689
CAY loss and loss expense ex CATs	B	$	8,380		$	2,181		$	1,976		$	4,471		$	342		$	2	$	17,352
Policy acquisition costs and administrative expenses
Policy acquisition costs and administrative expenses	C	2,801			1,083			137			3,185			223			290		7,719
Expense adjustments - favorable (unfavorable)		(14)			—			—			—			—			—		(14)
CAY Policy acquisition costs and administrative expenses, adjusted	D	$	2,787		$	1,083		$	137		$	3,185		$	223		$	290	$	7,705
Denominator
Net premiums earned	E	$	13,710		$	4,084		$	2,334		$	9,005		$	720				$	29,853
Net premiums earned adjustments on PPD - unfavorable (favorable)		78			—			(2)			—			—					76
PPD reinstatement premiums - unfavorable (favorable)		—			(2)			—			—			5					3
Net premiums earned excluding adjustments	F	$	13,788		$	4,082		$	2,332		$	9,005		$	725				$	29,932
P&C Combined ratio
Loss and loss expense ratio	A/E	62.9		%	64.5		%	85.8		%	49.7		%	44.3		%			60.9		%
Policy acquisition cost and administrative expense ratio	C/E	20.4		%	26.5		%	5.9		%	35.4		%	31.0		%			25.9		%
P&C Combined ratio		83.3		%	91.0		%	91.7		%	85.1		%	75.3		%			86.8		%
CAY P&C Combined ratio ex CATs
Loss and loss expense ratio, adjusted	B/F	60.8		%	53.4		%	84.7		%	49.7		%	47.2		%			58.0		%
Policy acquisition cost and administrative expense ratio, adjusted	D/F	20.2		%	26.6		%	5.9		%	35.3		%	30.8		%			25.7		%
CAY P&C Combined ratio ex CATs		81.0		%	80.0		%	90.6		%	85.0		%	78.0		%			83.7		%
Combined ratio
Combined ratio																			86.8		%
Add: impact of gains and losses on crop derivatives																			—
P&C Combined ratio																			86.8		%
Note: The ratios above are calculated using whole U.S. dollars. Accordingly, calculations using rounded amounts may differ. Letters A, B, C, D, E, and F included in the table are references for calculating the ratios above.

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		North America Commercial P&C Insurance			North America Personal P&C Insurance			North America Agricultural Insurance			Overseas General Insurance			Global Reinsurance			Corporate		Total P&C
Nine Months Ended
September 30, 2022
(in millions of U.S. dollars except for ratios)
Numerator
Losses and loss expenses/policy benefits	A	$	7,979		$	2,343		$	1,830		$	4,054		$	565		$	275	$	17,046
Catastrophe losses and related adjustments
Catastrophe losses, net of related adjustments		(803)			(469)			(52)			(298)			(160)			—		(1,782)
Reinstatement premiums collected (expensed) on catastrophe losses		—			—			—			—			55			—		55
Catastrophe losses, gross of related adjustments		(803)			(469)			(52)			(298)			(215)			—		(1,837)
PPD and related adjustments
PPD, net of related adjustments - favorable (unfavorable)		561			187			17			238			(22)			(272)		709
Net premiums earned adjustments on PPD - unfavorable (favorable)		83			—			159			—			—			—		242
Expense adjustments - unfavorable (favorable)		4			—			(1)			—			—			—		3
PPD reinstatement premiums - unfavorable (favorable)		—			—			—			—			(2)			—		(2)
PPD, gross of related adjustments - favorable (unfavorable)		648			187			175			238			(24)			(272)		952
CAY loss and loss expense ex CATs	B	$	7,824		$	2,061		$	1,953		$	3,994		$	326		$	3	$	16,161
Policy acquisition costs and administrative expenses
Policy acquisition costs and administrative expenses	C	$	2,515		$	1,005		$	115		$	2,907		$	205		$	264	$	7,011
Expense adjustments - favorable (unfavorable)		(4)			—			1			—			—			—		(3)
CAY Policy acquisition costs and administrative expenses, adjusted	D	$	2,511		$	1,005		$	116		$	2,907		$	205		$	264	$	7,008
Denominator
Net premiums earned	E	$	12,645		$	3,852		$	2,217		$	8,065		$	712				$	27,491
Reinstatement premiums (collected) expensed on catastrophe losses		—			—			—			—			(55)					(55)
Net premiums earned adjustments on PPD - unfavorable (favorable)		83			—			159			—			—					242
PPD reinstatement premiums - unfavorable (favorable)		—			—			—			—			(2)					(2)
Net premiums earned excluding adjustments	F	$	12,728		$	3,852		$	2,376		$	8,065		$	655				$	27,676
P&C Combined ratio
Loss and loss expense ratio	A/E	63.1		%	60.8		%	82.5		%	50.3		%	79.4		%			62.0		%
Policy acquisition cost and administrative expense ratio	C/E	19.9		%	26.1		%	5.3		%	36.0		%	28.8		%			25.5		%
P&C Combined ratio		83.0		%	86.9		%	87.8		%	86.3		%	108.2		%			87.5		%
CAY P&C Combined ratio ex CATs
Loss and loss expense ratio, adjusted	B/F	61.5		%	53.5		%	82.2		%	49.5		%	49.8		%			58.4		%
Policy acquisition cost and administrative expense ratio, adjusted	D/F	19.7		%	26.1		%	4.9		%	36.1		%	31.2		%			25.3		%
CAY P&C Combined ratio ex CATs		81.2		%	79.6		%	87.1		%	85.6		%	81.0		%			83.7		%
Combined ratio
Combined ratio																			87.5		%
Add: impact of gains and losses on crop derivatives																			—
P&C Combined ratio																			87.5		%
Note: The ratios above are calculated using whole U.S. dollars. Accordingly, calculations using rounded amounts may differ. Letters A, B, C, D, E, and F included in the table are references for calculating the ratios above.

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Amortization of Purchased Intangibles and Other Amortization

Amortization of purchased intangibles

Amortization expense related to purchased intangibles was $84 million and $226 million for the three and nine months ended September 30, 2023, respectively, compared with $69 million and $211 million for the prior year periods, respectively.

At September 30, 2023, the deferred tax liability associated with the Other intangible assets (excluding the fair value adjustment on Unpaid losses and loss expenses) was $1,577 million.

Refer to Note 7 to the Consolidated Financial Statements for the expected pre-tax amortization expense of purchased intangibles, which are presented gross of noncontrolling interests.

The following table presents, as of September 30, 2023, the expected reduction to the deferred tax liability associated with the amortization of Other intangible assets, at current foreign currency exchange rates, for the fourth quarter of 2023 and for the next five years:

For the Years Ending December 31 (in millions of U.S. dollars)	Reduction to deferred tax liability associated with intangible assets
Fourth quarter of 2023	$	24
2024	82
2025	73
2026	68
2027	63
2028	60
Total	$	370

Amortization of the fair value adjustment on acquired invested assets and assumed long-term debt

The following table presents, as of September 30, 2023, the expected amortization expense of the fair value adjustment on acquired invested assets related to the acquisitions of Huatai Group, Cigna's business in Asia and Chubb Corp, at current foreign currency exchange rates, and the expected amortization benefit from the fair value adjustment on assumed long-term debt related to the Chubb Corp acquisition for the fourth quarter of 2023 and for the next five years:

	Amortization (expense) benefit of the fair value adjustment on
For the Years Ending December 31 (in millions of U.S. dollars)		Total acquired invested assets (1)		Assumed long-term debt (2)
Fourth quarter of 2023		$	(8)	$	6
2024		(29)		21
2025		(13)		21
2026		2		21
2027		4		21
2028		6		21
Total		$	(38)	$	111

(1)Recorded as an increase (reduction) to Net investment income in the Consolidated statements of operations.

(2)Recorded as a reduction to Interest expense in the Consolidated statements of operations.

The estimate of amortization expense of the fair value adjustment on acquired invested assets could vary based on current market conditions, bond calls, overall duration of the acquired investment portfolio, and foreign exchange.

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Net Investment Income

	Three Months Ended September 30				Nine Months Ended September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Fixed maturities (1)	$	1,198	$	932	$	3,355	$	2,584
Short-term investments	60		25		147		49
Other interest income	17		14		46		21
Equity securities	53		21		68		93
Private equities	18		24		38		50
Other investments	16		8		54		28
Gross investment income (1)	1,362		1,024		3,708		2,825
Investment expenses	(48)		(45)		(142)		(136)
Net investment income (1)	$	1,314	$	979	$	3,566	$	2,689
(1) Includes amortization expense related to fair value adjustment of acquired invested assets	$	(9)	$	(6)	$	(14)	$	(36)

Net investment income is influenced by a number of factors including the amounts and timing of inward and outward cash flows, the level of interest rates, and changes in overall asset allocation. Net investment income increased 34.2 percent and 32.6 percent for the three and nine months ended September 30, 2023, respectively, primarily due to higher reinvestment rates on fixed maturities and the consolidation of Huatai group.

For private equities where we own less than three percent, investment income is included within Net investment income in the table above. For private equities where we own more than three percent, investment income is included within Other (income) expense in the Consolidated statements of operations. Excluded from Net investment income is the mark-to-market movement for private equities, which is recorded within either Other (income) expense or Net realized gains (losses) based on our percentage of ownership. The total mark-to-market movement for private equities excluded from Net investment income was as follows:

	Three Months Ended September 30				Nine Months Ended September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Total mark-to-market gain (loss) on private equity, pre-tax	$	90	$	(232)	$	364	$	(52)

Investments

Our investment portfolio is invested primarily in publicly traded, investment grade, fixed income securities with an average credit quality of A/A as rated by the independent investment rating services Standard and Poor’s (S&P)/Moody’s Investors Service (Moody’s) at September 30, 2023. The portfolio is externally managed by independent, professional investment managers and is broadly diversified across geographies, sectors, and issuers. Huatai's portfolio is predominantly managed internally by Huatai’s asset management companies. Private equities principally comprises investment funds and limited partnerships. We hold no collateralized debt obligations in our investment portfolio, and we provide no credit default protection. We have long-standing global credit limits for our entire portfolio across the organization. Exposures are aggregated, monitored, and actively managed by our Global Credit Committee, comprising senior executives, including our Chief Financial Officer, our Chief Risk Officer, our Chief Investment Officer, and our Treasurer. We also have well-established, strict contractual investment rules requiring managers to maintain highly diversified exposures to individual issuers and closely monitor investment manager compliance with portfolio guidelines.

The average duration of our fixed income securities was 4.7 years, which excludes Huatai, and 4.5 years at September 30, 2023, and December 31, 2022, respectively. We exclude Huatai in order to make comparison to prior period meaningful. We estimate that a 100 basis point (bps) increase in interest rates would reduce the valuation of our fixed income portfolio by approximately $5 billion at September 30, 2023. The following table shows the fair value and cost/amortized cost, net of valuation allowance, of our invested assets:

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	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)	Fair Value		Cost/ Amortized Cost, Net		Fair Value		Cost/ Amortized Cost, Net
Short-term investments	$	5,454	$	5,455	$	4,960	$	4,962
Fixed maturities available for sale	99,766		109,197		85,220		93,186
Fixed maturities held to maturity	—		—		8,439		8,848
Fixed income securities	105,220		114,652		98,619		106,996
Equity securities	3,395		3,395		827		827
Private debt held-for-investment	2,389		2,401		—		—
Private equities	13,362		13,362		12,355		12,355
Other investments	5,583		5,583		1,341		1,341
Total investments	$	129,949	$	139,393	$	113,142	$	121,519

The fair value of our total investments increased $16.8 billion during the nine months ended September 30, 2023, primarily due to the consolidation of Huatai, which added $12.7 billion, and investing of operating cash flow, partially offset by unrealized losses, share repurchases, and dividend payments.

On July 1, 2023, our ownership interest in Huatai increased to 69.6 percent and Huatai became a consolidated subsidiary of Chubb. Consolidation accounting requires including 100 percent of Huatai’s results of operations and financial position within our Consolidated financial statements. Therefore, at September 30, 2023, total investments included $12.7 billion related to Huatai's investment portfolio, of which $6.5 billion is economically owned by Chubb and $6.2 billion attributable to noncontrolling interests. The noncontrolling interests comprises both the portion that we do not own of Huatai based on our current ownership percentage, as well as the required consolidation of VIEs where we are the primary beneficiary, which is generally if we hold an economic interest of 10 percent or more. These VIEs are related to sponsored investment products, principally mutual funds, that are created and managed by Huatai’s asset management companies. These VIEs totaled $5.4 billion related to investments, of which our economic interest is $1.6 billion, with the remainder related to investors other than Chubb which are reported under Noncontrolling interests. Refer to Note 3 g) in the Consolidated Financial Statements for further detail on VIEs.

The following table presents the investments included in our Consolidated balance sheet relating to Huatai's investment portfolio at September 30, 2023, which are presented gross of noncontrolling interests required by consolidation accounting. Also provided below is the portion of Huatai’s investments that is owned by Chubb based on our ownership interest (shown below as attributable to Chubb) as a gauge to measure Chubb’s net economic investment exposure:

	September 30, 2023
(in millions of U.S. dollars)	Consolidated		Noncontrolling Interests		Attributable to Chubb
Short-term investments	$	1,015	$	491	$	524
Fixed maturities available for sale	2,748		696		2,052
Private debt held-for-investment	2,401		656		1,745
Equity securities	2,286		1,329		957
Private equities	33		15		18
Other investments	4,187		3,031		1,156
Total	$	12,670	$	6,218	$	6,452

Huatai’s investment portfolio comprised investments of predominantly investment grade fixed maturities, private debt, and mutual funds that hold principally fixed income securities. Private debt are investments with stated interest rates and maturity dates with fixed or determinable payments. Mutual funds, for which a Huatai entity holds an economic interest of less than 10 percent, are recorded within equities securities on the Consolidated balance sheets and comprised principally of holdings in

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fixed maturities. Other investments principally comprised fixed income securities that are managed by Huatai’s asset management companies and are carried at fair value with changes in fair value recorded through the Consolidated statements of operations. The average credit quality of Huatai’s fixed income portfolio is rated A.

The following tables present the fair value of our fixed income securities at September 30, 2023, and December 31, 2022. The first table lists investments according to type and second according to S&P credit rating:

	September 30, 2023				December 31, 2022
(in millions of U.S. dollars, except for percentages)	Fair Value		% of Total		Fair Value		% of Total
U.S. Treasury / Agency	$	3,681	3	%	$	3,996	4	%
Corporate and asset-backed securities	40,855		37	%	38,535		40	%
Mortgage-backed securities	19,605		18	%	17,202		17	%
Municipal	2,908		3	%	6,964		7	%
Non-U.S.	36,654		34	%	26,962		27	%
Short-term investments	5,454		5	%	4,960		5	%
Total	$	109,157	100	%	$	98,619	100	%
AAA	$	13,567	12	%	$	14,779	15	%
AA	31,204		29	%	31,195		32	%
A	26,567		24	%	18,366		19	%
BBB	19,102		18	%	16,802		17	%
BB	9,880		9	%	8,722		9	%
B	8,306		8	%	8,347		8	%
Other	531		—	%	408		—	%
Total	$	109,157	100	%	$	98,619	100	%

Corporate and asset-backed securities

The following table presents our 10 largest global exposures to corporate bonds by fair value at September 30, 2023: 

(in millions of U.S. dollars)	Fair Value
Bank of America Corp	$	739
Morgan Stanley	651
JP Morgan Chase & Co	647
Wells Fargo & Co	572
Citigroup Inc	505
Goldman Sachs Group Inc	505
UBS Group AG	391
HSBC Holdings Plc	377
Verizon Communications Inc	360
Comcast Corp	352

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Mortgage-backed securities

The following table shows the fair value and amortized cost, net of valuation allowance, of our mortgage-backed securities:

	S&P Credit Rating										Fair  Value		Amortized Cost, Net
September 30, 2023 (in millions of U.S. dollars)	AAA		AA		A		BBB		BB and below		Total		Total
Agency residential mortgage-backed securities (RMBS)	$	9	$	16,587	$	—	$	—	$	—	$	16,596	$	19,064
Non-agency RMBS	729		53		45		32		7		866		965
Commercial mortgage-backed securities	1,854		162		116		9		2		2,143		2,372
Total mortgage-backed securities	$	2,592	$	16,802	$	161	$	41	$	9	$	19,605	$	22,401

Municipal

As part of our overall investment strategy, we may invest in states, municipalities, and other political subdivisions fixed maturity securities (Municipal). We apply the same investment selection process described previously to our Municipal investments. The portfolio is highly diversified primarily in state general obligation bonds and essential service revenue bonds including education and utilities (water, power, and sewers).

Non-U.S.

Our exposure to the euro results primarily from Chubb European Group SE which is headquartered in France and offers a broad range of coverages throughout the European Union, Central, and Eastern Europe. Chubb primarily invests in Euro denominated investments to support its local currency insurance obligations and required capital levels. Chubb’s local currency investment portfolios have strict contractual investment guidelines requiring managers to maintain a high quality and diversified portfolio to both sector and individual issuers. Investment portfolios are monitored daily to ensure investment manager compliance with portfolio guidelines.

Our non-U.S. investment grade fixed income portfolios are currency-matched with the insurance liabilities of our non-U.S. operations. The average credit quality of our non-U.S. fixed income securities is A and 38 percent of our holdings are rated AAA or guaranteed by governments or quasi-government agencies. Within the context of these investment portfolios, our government and corporate bond holdings are highly diversified across industries and geographies. Issuer limits are based on credit rating (AA—two percent, A—one percent, BBB—0.5 percent of the total portfolio) and are monitored daily via an internal compliance system. We manage our indirect exposure using the same credit rating based investment approach. Accordingly, we do not believe our indirect exposure is material.

The following table summarizes the fair value and amortized cost, net of valuation allowance, of our non-U.S. fixed income portfolio by country/sovereign for non-U.S. government securities at September 30, 2023: 

(in millions of U.S. dollars)	Fair Value		Amortized Cost, Net
Republic of Korea	$	1,617	$	1,701
People's Republic of China	1,345		1,340
Taiwan	955		923
Canada	883		969
Federative Republic of Brazil	663		669
United Mexican States	592		629
Province of Ontario	534		587
Kingdom of Thailand	525		528
Socialist Republic of Vietnam	482		364
Commonwealth of Australia	439		526
Other Non-U.S. Government Securities	5,408		5,946
Total	$	13,443	$	14,182

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The following table summarizes the fair value and amortized cost, net of valuation allowance, of our non-U.S. fixed income portfolio by country/sovereign for non-U.S. corporate securities at September 30, 2023:

(in millions of U.S. dollars)	Fair Value		Amortized Cost, Net
China	$	5,761	$	5,802
United Kingdom	2,536		2,764
Canada	1,941		2,079
South Korea	1,422		1,475
United States (1)	1,380		1,482
France	1,378		1,477
Australia	1,035		1,125
Japan	759		819
Germany	575		631
Netherlands	563		613
Other Non-U.S. Corporate Securities	5,861		6,347
Total	$	23,211	$	24,614

(1)     The countries that are listed in the non-U.S. corporate fixed income portfolio above represent the ultimate parent company's country of risk. Non-U.S. corporate securities could be issued by foreign subsidiaries of U.S. corporations.

The tables above include Huatai invested assets which are required to be reported at 100 percent within our Consolidated balance sheets. However, our economic exposure is limited to our ownership interest.

Below-investment grade corporate fixed income portfolio

Below-investment grade securities have different characteristics than investment grade corporate debt securities. Risk of loss from default by the borrower is greater with below-investment grade securities. Below-investment grade securities are generally unsecured and are often subordinated to other creditors of the issuer. Also, issuers of below-investment grade securities usually have higher levels of debt and are more sensitive to adverse economic conditions, such as recession or increasing interest rates, than investment grade issuers. At September 30, 2023, our corporate fixed income investment portfolio included below-investment grade and non-rated securities which, in total, comprised approximately 15 percent of our fixed income portfolio. Our below-investment grade and non-rated portfolio includes over 1,720 issuers, with the greatest single exposure being $154 million.

We manage high-yield bonds as a distinct and separate asset class from investment grade bonds. The allocation to high-yield bonds is explicitly set by internal management and is targeted to securities in the upper tier of credit quality (BB/B). Our minimum rating for initial purchase is BB/B. Sixteen external investment managers are responsible for high-yield security selection and portfolio construction. Our high-yield managers have a conservative approach to credit selection and very low historical default experience. Holdings are highly diversified across industries and generally subject to a 1.5 percent issuer limit as a percentage of high-yield allocation. We monitor position limits daily through an internal compliance system. Derivative and structured securities (e.g., credit default swaps and collateralized debt obligations) are not permitted in the high-yield portfolio.

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Critical Accounting Estimates

Unpaid losses and loss expenses

As an insurance and reinsurance company, we are required by applicable laws and regulations and GAAP to establish loss and loss expense reserves for the estimated unpaid portion of the ultimate liability for losses and loss expenses under the terms of our policies and agreements with our insured and reinsured customers. With the exception of certain structured settlements, for which the timing and amount of future claim payments are reliably determinable, and certain reserves for unsettled claims, our loss reserves are not discounted for the time value of money.

The following table presents a roll-forward of our unpaid losses and loss expenses: 

(in millions of U.S. dollars)	Gross Losses		Reinsurance Recoverable (1)		Net Losses
Balance at December 31, 2022	$	75,747	$	17,086	$	58,661
Losses and loss expenses incurred	23,189		5,252		17,937
Losses and loss expenses paid	(19,831)		(4,820)		(15,011)
Other (including foreign exchange translation)	600		290		310
Balance at September 30, 2023	$	79,705	$	17,808	$	61,897

(1)Net of valuation allowance for uncollectible reinsurance.

The estimate of the liabilities includes provisions for claims that have been reported but are unpaid at the balance sheet date (case reserves) and for obligations on claims that have been incurred but not reported (IBNR) at the balance sheet date. IBNR may also include provisions to account for the possibility that reported claims may settle for amounts that differ from the established case reserves. Loss reserves also include an estimate of expenses associated with processing and settling unpaid claims (loss expenses).

Refer to Note 8 to the Consolidated Financial Statements for a discussion on the changes in the loss reserves.

Future policy benefits

Effective January 1, 2023, Chubb adopted the long-duration targeted improvement (LDTI) U.S. GAAP accounting guidance which affects the recognition, measurement, presentation, and disclosure requirements for long-duration contracts. For a discussion of our critical accounting estimates, refer to Item 7 in our 2022 Form 10-K.

Asbestos and Environmental (A&E)

During the three months and nine months ended September 30, 2023, we increased environmental net loss reserves for Brandywine managed operations by $50 million. A&E reserves are included in Corporate. Refer to our 2022 Form 10-K for further information on our A&E exposures.

Fair value measurements

Accounting guidance defines fair value as the price to sell an asset or transfer a liability (an exit price) in an orderly transaction between market participants and establishes a three-level valuation hierarchy based on the reliability of the inputs. The fair value hierarchy gives the highest priority to quoted prices in active markets (Level 1 inputs) and the lowest priority to unobservable data (Level 3 inputs). Level 2 includes inputs, other than quoted prices within Level 1, that are observable for assets or liabilities either directly or indirectly. Refer to Note 4 to the Consolidated Financial Statements for information on our fair value measurements.

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Catastrophe Management

We actively monitor and manage our catastrophe risk accumulation around the world from natural perils, including setting risk limits based on probable maximum loss (PML) and purchasing catastrophe reinsurance, to ensure sufficient liquidity and capital to meet the expectations of regulators, rating agencies, and policyholders, and to provide shareholders with an appropriate risk-adjusted return. Chubb uses internal and external data together with sophisticated, analytical catastrophe loss and risk modeling techniques to ensure an appropriate understanding of risk, including diversification and correlation effects, across different product lines and territories. The table below presents our modeled pre-tax estimates of natural catastrophe PML, net of reinsurance, at September 30, 2023, and does not represent our expected catastrophe losses for any one year.

	Modeled Net Probable Maximum Loss (PML) Pre-tax
	Worldwide (1)				U.S. Hurricane (2)				California Earthquake (3)
	Annual Aggregate				Annual Aggregate				Single Occurrence
(in millions of U.S. dollars, except for percentages)	Chubb		% of Total Chubb Shareholders’ Equity		Chubb		% of Total Chubb Shareholders’ Equity		Chubb		% of Total Chubb Shareholders’ Equity
1-in-10	$	2,327	4.4	%	$	1,182	2.3	%	$	147	0.3	%
1-in-100	$	5,082	9.7	%	$	3,238	6.2	%	$	1,424	2.7	%
1-in-250	$	8,489	16.2	%	$	6,237	11.9	%	$	1,685	3.2	%

(1)    Worldwide aggregate is comprised of losses arising from tropical cyclones, convective storms, earthquakes, U.S. wildfires, and floods in the U.S., Canada, and Europe, and excludes "non-modeled" perils such as man-made and other catastrophe risks including pandemic.

(2)    U.S. hurricane losses include losses from wind, storm-surge, and related precipitation-induced flooding.

(3)    California earthquakes include the fire-following sub-peril.

The PML for worldwide and key U.S. peril regions are based on our in-force portfolio at July 1, 2023, and reflect the September 1, 2023, reinsurance program, as well as inuring reinsurance protection coverage. This includes a $500 million excess of loss program for named windstorms and earthquakes within Northeast states, purchased and effective September 1, 2023. Refer to the Global Property Catastrophe Reinsurance section for more information. These estimates assume that reinsurance recoverable is fully collectible.

According to the model, for the 1-in-100 return period scenario, there is a one percent chance that our pre-tax annual aggregate losses incurred in any year from U.S. hurricane events could be in excess of $3,238 million (or 6.2 percent of total Chubb shareholders’ equity at September 30, 2023). Effective December 31, 2022, our worldwide PMLs include losses from floods in Canada and Europe. Additionally, U.S. hurricane PMLs include losses from hurricane related precipitation-induced flooding.

The above estimates of Chubb’s loss profile are inherently uncertain for many reasons, including the following:

•While the use of third-party modeling packages to simulate potential catastrophe losses is prevalent within the insurance industry, the models are reliant upon significant meteorology, seismology, and engineering assumptions to estimate catastrophe losses. In particular, modeled catastrophe events are not always a representation of actual events and ensuing additional loss potential;

•There is no universal standard in the preparation of insured data for use in the models, the running of the modeling software, and interpretation of loss output. These loss estimates do not represent our potential maximum exposures and it is highly likely that our actual incurred losses would vary materially from the modeled estimates;

•The potential effects of climate change add to modeling complexity; and

•Changing climate conditions could impact our exposure to natural catastrophe risks. Published studies by leading government, academic, and professional organizations combined with extensive research by Chubb climate scientists reveal the potential for increases in the frequency and severity of key natural perils such as tropical cyclones, inland flood, and wildfire. To understand the potential impacts on the Chubb portfolio, we have conducted stress tests on our peak exposure zone, namely in the U.S., using parameters outlined by the Intergovernmental Panel on Climate Change (IPCC) Climate Change 2021 report. These parameters consider the impacts of climate change and the resulting climate peril impacts over a timescale relevant to our business. The tests are conducted by adjusting our baseline view of risk for the perils of hurricane, inland flood, and wildfire in the U.S. to reflect increases in frequency and severity across the modeled domains for each of these perils. Based on these tests against the Chubb portfolio we do not expect material impacts to our baseline PMLs from climate change through December 31, 2023. These tests reflect current exposures only and exclude potentially mitigating factors such as changes to building codes, public or private risk mitigation, regulation, and public policy.

Refer to Item 7 in our 2022 Form 10-K for more information on man-made and other catastrophes.

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Global Property Catastrophe Reinsurance Program

Chubb’s core property catastrophe reinsurance program provides protection against natural catastrophes impacting its primary property operations (i.e., excluding our Global Reinsurance and Life Insurance segments).

We regularly review our reinsurance protection and corresponding property catastrophe exposures. This may or may not lead to the purchase of additional reinsurance prior to a program’s renewal date. In addition, prior to each renewal date, we consider how much, if any, coverage we intend to buy and we may make material changes to the current structure in light of various factors, including modeled PML assessment at various return periods, reinsurance pricing, our risk tolerance and exposures, and various other structuring considerations.

Chubb renewed its Global Property Catastrophe Reinsurance Program for our North American and International operations effective April 1, 2023, through March 31, 2024, with no material changes in coverage from the expiring program. The program consists of three layers in excess of losses retained by Chubb on a per occurrence basis. In addition, Chubb renewed its terrorism coverage (excluding nuclear, biological, chemical and radiation coverage, with an inclusion of coverage for biological and chemical coverage for personal lines) for the United States from April 1, 2023, through March 31, 2024, with the same limits and retention and percentage placed except that the majority of terrorism coverage is on an aggregate basis above our retentions without a reinstatement.

Effective September 1, 2023, Chubb purchased an additional layer of per occurrence coverage for named windstorms and earthquakes within Northeast states. Coverage is provided for North American and international operations losses within the territory through August 31, 2024.

Loss Location	Layer of Loss	Comments	Notes
United States (excluding Alaska and Hawaii)	$0 million – $1.1 billion	Losses retained by Chubb	(a)
United States (excluding Alaska and Hawaii)	$1.1 billion – $1.25 billion	All natural perils and terrorism	(b)
United States (excluding Alaska and Hawaii)	$1.25 billion – $2.35 billion	All natural perils and terrorism	(c)
United States (excluding Alaska and Hawaii)	$2.35 billion – $3.5 billion	All natural perils and terrorism	(d)
United States (Northeast States Only)	$3.5 billion – $4.0 billion	Named windstorm and earthquake	(e)
International (including Alaska and Hawaii)	$0 million – $200 million	Losses retained by Chubb	(a)
International (including Alaska and Hawaii)	$200 million – $1.3 billion	All natural perils and terrorism	(c)
Alaska, Hawaii, and Canada	$1.3 billion – $2.45 billion	All natural perils and terrorism	(d)

(a)    Ultimate retention will depend upon the nature of the loss and the interplay between the underlying per risk programs and certain other catastrophe programs purchased by individual business units. These other catastrophe programs have the potential to reduce our effective retention below the stated levels.

(b)    These coverages are partially placed with Reinsurers.

(c)    These coverages are both part of the same Second layer within the Global Property Catastrophe Reinsurance Program and are fully placed with Reinsurers.

(d)    These coverages are both part of the same Third layer within the Global Property Catastrophe Reinsurance Program and are fully placed with Reinsurers.

(e)    Northeast states are defined as Virginia to Maine. This coverage is fully placed with Reinsurers.

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Capital Resources

Capital resources consist of funds deployed or available to be deployed to support our business operations.

	September 30			December 31
	2023			2022
(in millions of U.S. dollars, except for ratios)				As Adjusted
Short-term debt	$	700		$	475
Long-term debt	13,736			14,402
Total financial debt	14,436			14,877
Trust preferred securities	308			308
Total Chubb shareholders’ equity	52,373			50,519
Total capitalization	$	67,117		$	65,704
Ratio of financial debt to total capitalization	21.5		%	22.6		%
Ratio of financial debt plus trust preferred securities to total capitalization	22.0		%	23.1		%

Repurchase agreements are excluded from the table above and are disclosed separately from short-term debt in the Consolidated balance sheets. The repurchase agreements are collateralized borrowings where we maintain the right and ability to redeem the collateral on short notice, unlike short-term debt which comprises the current maturities of our long-term debt instruments.

For the nine months ended September 30, 2023, we repurchased $1.8 billion of Common Shares in a series of open market transactions under the Board of Directors (Board) share repurchase authorizations. At September 30, 2023, there were 23,467,247 Common Shares in treasury with a weighted-average cost of $159.69 per share, and $4.4 billion in share repurchase authorization remained.

We generally maintain the ability to issue certain classes of debt and equity securities via a Securities and Exchange Commission (SEC) shelf registration statement which is renewed every three years. This allows us capital market access for refinancing as well as for unforeseen or opportunistic capital needs.

Dividends

We have paid dividends each quarter since we became a public company in 1993. Under Swiss law, dividends must be stated in Swiss francs though dividend payments are made by Chubb in U.S. dollars. Refer to Note 14 to the Consolidated Financial Statements for a discussion of our dividend methodology.

At our May 2023 annual general meeting, our shareholders approved an annual dividend for the following year of up to $3.44 per share, or CHF 3.09 per share, calculated using the USD/CHF exchange rate as published in the Wall Street Journal on May 17, 2023, expected to be paid in four quarterly installments of $0.86 per share after the general meeting by way of a distribution from capital contribution reserves, transferred to free reserves for payment. The Board determines the record and payment dates at which the annual dividend may be paid until the date of the 2024 annual general meeting, and is authorized to abstain from distributing a dividend at its discretion. The annual dividend approved in May 2023 represented a $0.12 per share increase ($0.03 per quarter) over the prior year dividend.

The following table represents dividends paid per Common Share to shareholders of record on each of the following dates: 

Shareholders of record as of:	Dividends paid as of:
December 16, 2022	January 6, 2023	$0.83 (CHF 0.79)
March 17, 2023	April 10, 2023	$0.83 (CHF 0.77)
June 16, 2023	July 7, 2023	$0.86 (CHF 0.77)
September 15, 2023	October 6, 2023	$0.86 (CHF 0.75)

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Liquidity

We anticipate that positive cash flows from operations (underwriting activities and investment income) should be sufficient to cover cash outflows under most loss scenarios for the near term. In addition to cash from operations, routine sales of investments, and financing arrangements, we have agreements with a third-party bank provider which implemented two international multi-currency notional cash pooling programs to enhance cash management efficiency during periods of short-term timing mismatches between expected inflows and outflows of cash by currency. The programs allow us to optimize investment income by avoiding portfolio disruption. Should the need arise, we generally have access to capital markets and to credit facilities with letter of credit capacity of $4.0 billion, $3.0 billion of which can be used for revolving credit. At September 30, 2023, our usage under these facilities was $1.0 billion in letters of credit. Our access to credit under these facilities is dependent on the ability of the banks that are a party to the facilities to meet their funding commitments. The facilities require that we maintain certain financial covenants, all of which we met at September 30, 2023. Should the existing credit providers on these facilities experience financial difficulty, we may be required to replace credit sources, possibly in a difficult market. If we cannot obtain adequate capital or sources of credit on favorable terms, on a timely basis, or at all, our business, operating results, and financial condition could be adversely affected. To date, we have not experienced difficulty accessing our credit facility or establishing additional facilities when needed.

The payment of dividends or other statutorily permissible distributions from our operating companies are subject to the laws and regulations applicable to each jurisdiction, as well as the need to maintain capital levels adequate to support the insurance and reinsurance operations, including financial strength ratings issued by independent rating agencies. During the nine months ended September 30, 2023, we were able to meet all our obligations, including the payments of dividends on our Common Shares, with our net cash flows.

We assess which subsidiaries to draw dividends from based on a number of factors. Considerations such as regulatory and legal restrictions as well as the subsidiary’s financial condition are paramount to the dividend decision. Chubb Limited received dividends of $1.4 billion and $6.8 billion from its Bermuda subsidiaries during the nine months ended September 30, 2023 and 2022, respectively. Chubb Limited received cash dividends of $28 million and $32 million and non-cash dividends of $291 million and $348 million from Swiss subsidiaries during the nine months ended September 30, 2023 and 2022, respectively.

The U.S. insurance subsidiaries of Chubb INA Holdings Inc. (Chubb INA) may pay dividends, without prior regulatory approval, subject to restrictions set out in state law of the subsidiary’s domicile (or, if applicable, commercial domicile). Chubb INA’s international subsidiaries are also subject to insurance laws and regulations particular to the countries in which the subsidiaries operate. These laws and regulations sometimes include restrictions that limit the amount of dividends payable without prior approval of regulatory insurance authorities. Chubb Limited received no dividends from Chubb INA during the nine months ended September 30, 2023 and 2022. Debt issued by Chubb INA is serviced by statutorily permissible distributions by Chubb INA’s insurance subsidiaries to Chubb INA as well as other group resources. Chubb INA received $976 million and $1.8 billion from its subsidiaries during the nine months ended September 30, 2023 and 2022, respectively.

Cash Flows

Our sources of liquidity include cash from operations, routine sales of investments, and financing arrangements. The following is a discussion of our cash flows for the nine months ended September 30, 2023 and 2022.

Operating cash flows were $9.4 billion in the nine months ended September 30, 2023, compared to $8.6 billion in the prior year period, primarily due to higher net investment income and net premiums collected, partially offset by higher net losses paid and income taxes paid.

Cash used for investing was $5.4 billion in the nine months ended September 30, 2023, compared to $5.2 billion in the prior year period, an increase of $0.2 billion. Cash used for investing in the current period primarily included higher net purchases of fixed maturities and equity securities of $6.6 billion. This increase was partially offset by a decrease in cash used for the acquisition of subsidiaries of $5.3 billion and a decrease in private equity contributions, net of distributions of $1.2 billion.

Cash used for financing was $3.3 billion in the nine months ended September 30, 2023, compared to $2.7 billion in the prior year period. The increase of $0.6 billion used for financing included net repayments of $1.1 billion from repurchase agreements and $475 million from long-term debt, partially offset by lower common shares repurchased of $935 million.

We use repurchase agreements as a low-cost funding alternative. At September 30, 2023, there were $2.6 billion in repurchase agreements outstanding with various maturities over the next eight months.

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Both internal and external forces influence our financial condition, results of operations, and cash flows. Claim settlements, premium levels, and investment returns may be impacted by changing rates of inflation and other economic conditions. In many cases, significant periods of time, ranging up to several years or more, may lapse between the occurrence of an insured loss, the reporting of the loss to us, and the settlement of the liability for that loss.

Information provided in connection with outstanding debt of subsidiaries

Chubb INA Holdings Inc. (Subsidiary Issuer) is an indirect 100 percent-owned and consolidated subsidiary of Chubb Limited (Parent Guarantor). The Parent Guarantor fully and unconditionally guarantees certain of the debt of the Subsidiary Issuer.

The following table presents the condensed balance sheets of Chubb Limited and Chubb INA Holdings Inc., after elimination of investment in any non-guarantor subsidiary:

	Chubb Limited (Parent Guarantor)				Chubb INA Holdings Inc. (Subsidiary Issuer)
	September 30		December 31		September 30		December 31
(in millions of U.S. dollars)	2023		2022		2023		2022
Assets
Investments	$	—	$	—	$	100	$	135
Cash	38		40		2		2
Due from parent guarantor/subsidiary issuer	2		2		1,165		586
Due from subsidiaries that are not issuers or     guarantors	1,807		1,791		598		598
Other assets	1		16		2,425		2,106
Total assets	$	1,848	$	1,849	$	4,290	$	3,427
Liabilities
Due to parent guarantor/subsidiary issuer	$	1,165	$	586	$	2	$	2
Due to subsidiaries that are not issuers or     guarantors	232		248		1,645		1,710
Affiliated notional cash pooling programs	1,235		252		2,300		1,496
Short-term debt	—		—		700		475
Long-term debt	—		—		13,736		14,402
Trust preferred securities	—		—		308		308
Other liabilities	527		616		1,439		1,305
Total liabilities	3,159		1,702		20,130		19,698
Total shareholders’ equity	(1,311)		147		(15,840)		(16,271)
Total liabilities and shareholders’ equity	$	1,848	$	1,849	$	4,290	$	3,427

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The following table presents the condensed statements of operations and comprehensive income of Chubb Limited and Chubb INA Holdings Inc., excluding equity in earnings from non-guarantor subsidiaries:

Nine Months Ended September 30, 2023	Chubb Limited (Parent Guarantor)		Chubb INA Holdings Inc. (Subsidiary Issuer)
(in millions of U.S. dollars)
Net investment income (loss)	$	(13)	$	(94)
Net realized gains (losses)	(1)		(107)
Administrative expenses	86		(9)
Interest (income) expense	(8)		332
Other (income) expense	(33)		58
Cigna integration expenses	—		3
Income tax expense (benefit)	10		(181)
Net loss	$	(69)	$	(404)
Comprehensive loss	$	(69)	$	(535)

ITEM 3. Quantitative and Qualitative Disclosures about Market Risk

Refer to Item 7A included in our 2022 Form 10-K.

Foreign currency management

As a global company, Chubb entities transact business in multiple currencies. Our policy is to generally match assets, liabilities and required capital for each individual jurisdiction in local currency, which would include the use of derivatives. We occasionally engage in hedging activity for planned cross border transactions. For an estimated impact of foreign currency movement on our net assets denominated in non-U.S. currencies, refer to Item 7A in our 2022 Form 10-K. This information will be updated and disclosed in interim filings if our net assets in non-U.S. currencies change materially from the December 31, 2022, balances disclosed in the 2022 Form 10-K.

Reinsurance of market risk benefits

Effective January 1, 2023, we adopted new U.S. GAAP accounting guidance for long-duration contracts that affects the accounting for GMDB and GLB liabilities, collectively referred to as market risk benefits (MRB). MRB are measured at fair value using a valuation model based on current net exposures, market data, our experience, and other factors. Changes in fair value are recorded to Market risk benefits gains (losses) in the Consolidated statements of operations, except for the change in fair value due to a change in the instrument-specific credit risk which will be recognized in Other comprehensive income.

Chubb views its MRB reinsurance business as having a similar risk profile to that of catastrophe reinsurance, with the probability of long-term economic loss relatively small at the time of pricing. Adverse changes in market factors and policyholder behavior will have an impact on both MRB gains (losses) and net income. When evaluating these risks, we expect to be compensated for taking both the risk of a cumulative long-term economic net loss, as well as the short-term accounting variations caused by these market movements. Therefore, we evaluate this business in terms of its long-term economic risk and reward.

The tables below are estimates of the sensitivities to instantaneous changes in economic inputs (e.g., equity shock, interest rate shock etc.) at September 30, 2023, for both the fair value of the MRB liability (FVL) and the fair value of specific derivative instruments held (hedge value) to partially offset the risk in the MRB reinsurance portfolio. The following assumptions should be considered when using the below tables:

•Equity shocks impact all global equity markets equally

•Our liabilities are sensitive to global equity markets in the following proportions: 80 percent—90 percent U.S. equity, and 10 percent—20 percent international equity.

•Our current hedge portfolio is sensitive only to U.S. equity markets.

•We would suggest using the S&P 500 index as a proxy for U.S. equity, and the MSCI EAFE index as a proxy for international equity.

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•Interest rate shocks assume a parallel shift in the U.S. yield curve

•Our liabilities are also sensitive to global interest rates at various points on the yield curve, mainly the U.S. Treasury curve in the following proportions: 0 percent—15 percent short-term rates (maturing in less than 5 years), 15 percent—25 percent medium-term rates (maturing between 5 years and 10 years, inclusive), and 70 percent—80 percent long-term rates (maturing beyond 10 years).

•A change in AA-rated credit spreads impacts the rate used to discount cash flows in the fair value model. AA-rated credit spreads are a proxy for both our own credit spreads and the credit spreads of the ceding insurers.

•The hedge sensitivity is from September 30, 2023, market levels and only applicable to the equity and interest rate sensitivities table below.

•The sensitivities do not scale linearly and may be proportionally greater for larger movements in the market factors. Actual sensitivity of our net income may differ from those disclosed in the tables below due to fluctuations in short-term market movements.

Sensitivities to equity and interest rate movements
(in millions of U.S. dollars)		Worldwide Equity Shock
Interest Rate Shock		+10%		Flat		-10%		-20%		-30%		-40%
+100 bps	(Increase)/decrease in FVL	$	279	$	186	$	72	$	(75)	$	(259)	$	(489)
	Increase/(decrease) in hedge value	(107)		—		107		214		321		429
	Increase/(decrease) in net income	$	172	$	186	$	179	$	139	$	62	$	(60)
Flat	(Increase)/decrease in FVL	$	111	$	—	$	(136)	$	(313)	$	(527)	$	(784)
	Increase/(decrease) in hedge value	(107)		—		107		214		321		429
	Increase/(decrease) in net income	$	4	$	—	$	(29)	$	(99)	$	(206)	$	(355)
-100 bps	(Increase)/decrease in FVL	$	(92)	$	(222)	$	(392)	$	(595)	$	(836)	$	(1,118)
	Increase/(decrease) in hedge value	(107)		—		107		214		321		429
	Increase/(decrease) in net income	$	(199)	$	(222)	$	(285)	$	(381)	$	(515)	$	(689)
Sensitivities to Other Economic Variables		AA-rated Credit Spreads				Interest Rate Volatility				Equity Volatility
(in millions of U.S. dollars)		+100 bps		-100 bps		+2%		-2%		+2%		-2%
(Increase)/decrease in FVL		$	50	$	(56)	$	(1)	$	1	$	(17)	$	17
Increase/(decrease) in net income		$	50	$	(56)	$	(1)	$	1	$	(17)	$	17

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Market Risk Benefits Net Amount at Risk

All our MRB reinsurance treaties include annual or aggregate claim limits and many include an aggregate deductible which limit the net amount at risk under these programs. The tables below present the net amount at risk at September 30, 2023, following an immediate change in equity market levels, assuming all global equity markets are impacted equally.

a) Reinsurance covering the GMDB risk only

	Equity Shock
(in millions of U.S. dollars)	+20		%	Flat		-20		%	-40		%	-60		%	-80		%
GMDB net amount at risk	$	238		$	350	$	615		$	715		$	663		$	541
Claims at 100% immediate mortality	146			150		149			139			126			114

The treaty limits function as a ceiling as equity markets fall. As the shocks in the table above become incrementally more negative, the impacts begin to drop due to the specific nature of these claim limits, many of which are annual claim limits calculated as a percentage of the reinsured account value. There is also an impact due to a portion of the reinsurance under which claims are positively correlated to equity markets (claims decrease as equity markets fall).

b) Reinsurance covering the GLB risk only

	Equity Shock
(in millions of U.S. dollars)	+20		%	Flat		-20		%	-40		%	-60		%	-80		%
GLB net amount at risk	$	938		$	1,251	$	1,752		$	2,228		$	2,573		$	2,832

The treaty limits cause the net amount at risk to increase at a declining rate as equity markets fall.

c) Reinsurance covering both the GMDB and GLB risks on the same underlying policyholders

	Equity Shock
(in millions of U.S. dollars)	+20		%	Flat		-20		%	-40		%	-60		%	-80		%
GMDB net amount at risk	$	46		$	55	$	65		$	75		$	82		$	88
GLB net amount at risk	392			482		592			706			819			835
Claims at 100% immediate mortality	30			30		30			30			30			30

The treaty limits cause the GMDB and GLB net amount at risk to increase at a declining rate as equity markets fall.

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ITEM 4. Controls and Procedures

Chubb’s management, with the participation of Chubb’s Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of Chubb’s disclosure controls and procedures as defined in Rule 13a-15(e) and Rule 15d-15(e) under the Securities Exchange Act of 1934 as of September 30, 2023. Based upon that evaluation, Chubb’s Chief Executive Officer and Chief Financial Officer concluded that Chubb’s disclosure controls and procedures are effective in allowing information required to be disclosed in reports filed under the Securities Exchange Act of 1934 to be recorded, processed, summarized, and reported within time periods specified in the rules and forms of the SEC, and that such information is accumulated and communicated to Chubb’s management, including its Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Effective July 1, 2023, Chubb discontinued the equity method of accounting to its investment in Huatai Group and applied consolidation accounting. As of and for the three months ended September 30, 2023, Huatai Group represented approximately 3 percent of consolidated revenues and approximately 7 percent of total assets. We currently exclude, and are in the process of working to incorporate, Huatai Group in our evaluation of internal controls over financial reporting, and related disclosure controls and procedures.

On July 1, 2022, Chubb completed the acquisition of Cigna's Personal Accident, Supplemental Health and Life Insurance Business in Asia-Pacific. Since the acquisition we have worked to incorporate the acquired Cigna Life Business internal control processes for the key Sarbanes-Oxley locations.

Other than working to incorporate Huatai Group as noted above, there have been no changes in Chubb's internal controls over financial reporting during the three months ended September 30, 2023, that have materially affected, or are reasonably likely to materially affect, Chubb's internal controls over financial reporting.

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PART II OTHER INFORMATION

ITEM 1. Legal Proceedings

The information required with respect to this item is included in Note 13 h) to the Consolidated Financial Statements, which is hereby incorporated herein by reference.

ITEM 1A. Risk Factors

The following supplements the risk factors that could have a material impact on our results of operations or financial condition as described under "Risk Factors" under Item 1A of Part I of our 2022 Form 10-K.

We may be subject to U.S. tax and Bermuda tax which may have an adverse effect on our results of operations and shareholder investment.

Chubb Limited and our non-U.S. subsidiaries operate in a manner so that none of these companies should be subject to U.S. tax (other than U.S. excise tax on insurance and reinsurance premium income attributable to insuring or reinsuring U.S. risks and U.S. withholding tax on some types of U.S. source investment income), because none of these companies should be treated as engaged in a trade or business within the U.S. However, because there is considerable uncertainty as to the activities that constitute being engaged in a trade or business within the U.S., we cannot be certain that the Internal Revenue Service (IRS) will not contend successfully that Chubb Limited or its non-U.S. subsidiaries are engaged in a trade or business in the U.S. If Chubb Limited or any of its non-U.S. subsidiaries were considered to be engaged in a trade or business in the U.S., such entity could be subject to U.S. corporate income and branch profits taxes on the portion of its earnings effectively connected to such U.S. business, in which case our results of operations and our shareholders' investments could be adversely affected.

The Bermuda Minister of Finance, under the Exempted Undertakings Tax Protection Act 1966 of Bermuda, as amended, has given Chubb Limited and its Bermuda insurance subsidiaries a written assurance that if any legislation is enacted in Bermuda that would impose tax computed on profits or income, or computed on any capital asset, gain, or appreciation, then the imposition of any such tax would not be applicable to those companies or any of their respective operations, shares, debentures, or other obligations until March 31, 2035, except insofar as such tax would apply to persons ordinarily resident in Bermuda or is payable by us in respect of real property owned or leased by us in Bermuda.

However, as part of its evaluation of a new income tax regime, the Bermuda Minister of Finance is reviewing the applicability of such written tax assurance certificates. The Bermuda Minister’s process for evaluation of a new income tax regime has been announced to comprise three expected public consultation papers, of which two have been issued already. The first one was issued on August 8, 2023, which considered a proposed Bermuda corporate income tax of up to 15% effective for tax years beginning on or after January 1, 2025. The second public consultation paper issued October 5, 2023, indicates that the Bermuda Government believes it is reasonable and proportionate for any new Bermuda corporate income tax regime to supersede any existing tax assurance certificates held by entities within the scope of the new Bermuda corporate income tax.

We currently anticipate that a new Bermuda income tax would be a covered tax under the OECD’s global minimum tax regime discussed in our Risk Factor titled “The Organization for Economic Cooperation and Development (OECD), European Union (EU), Swiss Federal Council, and other jurisdictions are considering or have passed measures that might change long standing tax principles that could increase our taxes.” Therefore, we would expect any implementation of the OECD global minimum tax regime to count any enacted Bermuda income tax toward such OECD minimum tax.

Although we cannot predict when or if any new Bermuda corporate income tax will be enacted, the imposition of a Bermuda corporate income tax could, if applicable to our Bermuda based entities, have an adverse effect on our financial condition and results of operations.

106

ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds and Issuer Repurchases of Equity Securities

Issuer’s Repurchases of Equity Securities

The following table provides information with respect to purchases by Chubb of its Common Shares during the three months ended September 30, 2023:

Period	Total Number of Shares Purchased (1)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plan (2)	Approximate Dollar Value of Shares that May Yet be Purchased Under the Plan
July 1 through July 31	178,922	$	205.91	166,000	$	4.97	billion
August 1 through August 31	1,700,074	$	202.38	1,698,400	$	4.62	billion
September 1 through September 30	1,088,598	$	209.99	1,085,500	$	4.40	billion
Total	2,967,594	$	205.38	2,949,900

(1)This column represents open market share repurchases and the surrender to Chubb of Common Shares to satisfy tax withholding obligations in connection with the vesting of restricted stock issued to employees and to cover the cost of the exercise of options by employees through stock swaps.

(2)In June 2023, the Board authorized the repurchase of up to $5.0 billion of Chubb's Common Shares effective July 1, 2023 with no expiration date. The aggregate value of shares purchased in the three months ended September 30, 2023 as part of the publicly announced plan was $606 million. Refer to Note 14 to the Consolidated Financial Statements for more information on the Chubb Limited securities repurchase authorizations.

107

ITEM 5. Other Information

On July 31, 2023, John J. Lupica, Vice Chairman, Chubb Group, and President, North America Insurance, adopted a "Rule 10b5-1 trading arrangement" as defined under Item 408 of SEC Regulation S-K. The arrangement is scheduled to expire on October 30, 2024, subject to earlier termination in accordance with its terms. The aggregate number of Chubb common shares authorized to be sold pursuant to the trading arrangement is 17,810.

During the three months ended September 30, 2023, no other director or officer of Chubb (as defined in Rule 16a-1(f) under the Exchange Act) informed us of the adoption or termination of a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement," as those terms are defined in Item 408 of SEC Regulation S-K.

108

ITEM 6. Exhibits

		Incorporated by Reference
Exhibit Number	Exhibit Description	Form	Original Number	Date Filed	Filed Herewith
3.1	Articles of Association of the Company, as amended and restated	8-K	3.1	May 17, 2023
3.2	Organizational Regulations of the Company, as amended	10-K	3.2	February 24, 2023
4.1	Articles of Association of the Company, as amended and restated	8-K	4.1	May 17, 2023
4.2	Organizational Regulations of the Company, as amended	10-K	4.2	February 24, 2023
22.1	Guaranteed Securities	10-Q	22.1	May 2, 2023
31.1	Certification Pursuant to Section 302 of The Sarbanes-Oxley Act of 2002				X
31.2	Certification Pursuant to Section 302 of The Sarbanes-Oxley Act of 2002				X
32.1	Certification Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of The Sarbanes-Oxley Act of 2002				X
32.2	Certification Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of The Sarbanes-Oxley Act of 2002				X
101.1	The following financial information from Chubb Limited’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2023, formatted in Inline XBRL: (i) Consolidated Balance Sheets at September 30, 2023, and December 31, 2022; (ii) Consolidated Statements of Operations and Comprehensive Income for the three and nine months ended September 30, 2023 and 2022; (iii) Consolidated Statements of Shareholders’ Equity for the three and nine months ended September 30, 2023 and 2022; (iv) Consolidated Statements of Cash Flows for the nine months ended September 30, 2023 and 2022; and (v) Notes to Consolidated Financial Statements				X
104.1	The Cover Page Interactive Data File formatted in Inline XBRL (The cover page XBRL tags are embedded in the Inline XBRL document and included in Exhibit 101.1)

109

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	CHUBB LIMITED
	(Registrant)
November 1, 2023	/s/ Evan G. Greenberg
	Evan G. Greenberg
	Chairman and Chief Executive Officer
November 1, 2023	/s/ Peter C. Enns
	Peter C. Enns
	Executive Vice President and Chief Financial Officer

110

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO

SECTION 302 OF

THE SARBANES-OXLEY ACT OF 2002

I, Evan G. Greenberg, certify that:

1)I have reviewed this quarterly report on Form 10-Q of Chubb Limited;

2)Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3)Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4)The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5)The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 1, 2023

/s/ Evan G. Greenberg

Evan G. Greenberg

Chairman and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO

SECTION 302 OF

THE SARBANES-OXLEY ACT OF 2002

I, Peter C. Enns, certify that:

1)I have reviewed this quarterly report on Form 10-Q of Chubb Limited;

2)Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3)Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4)The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5)The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 1, 2023

/s/ Peter C. Enns

Peter C. Enns

Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned officer of Chubb Limited (the Corporation) hereby certifies that the Corporation’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2023, fully complies with the applicable reporting requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m(a)) and that the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Corporation.

Date: November 1, 2023	/s/ Evan G. Greenberg
	Evan G. Greenberg
	Chairman and Chief Executive Officer

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned officer of Chubb Limited (the Corporation) hereby certifies that the Corporation’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2023, fully complies with the applicable reporting requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m(a)) and that the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Corporation.

Date: November 1, 2023	/s/ Peter C. Enns
	Peter C. Enns
	Executive Vice President and Chief Financial Officer

XML

Document and Entity Information - SFr / shares	9 Months Ended
	Sep. 30, 2023	Oct. 11, 2023	Dec. 31, 2022
Document Type	10-Q
Document Period End Date	Sep. 30, 2023
Document Quarterly Report	true
Document Transition Report	false
Entity Registrant Name	CHUBB LIMITED
Entity Central Index Key	0000896159
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Entity File Number	1-11778
Entity Incorporation, State or Country Code	V8
Entity Tax Identification Number	98-0091805
Entity Address, Address Line One	Baerengasse 32
Entity Address, City or Town	Zurich
Entity Address, Country	CH
Entity Address, Postal Zip Code	8001
Country Region	41
City Area Code	(0)43
Local Phone Number	456 76 00
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Shell Company	false
Entity Emerging Growth Company	false
Common Shares, par value	SFr 0.50		SFr 24.15
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Common Shares Outstanding		407,989,898
INA Senior Notes Due March 2038 [Member]
Title of 12(b) Security	Guarantee of Chubb INA Holdings Inc. 2.50% Senior Notes due 2038
Trading Symbol	CB/38A
Security Exchange Name	NYSE
INA Senior Notes Due December 2029 [Member]
Title of 12(b) Security	Guarantee of Chubb INA Holdings Inc. 0.875% Senior Notes due 2029
Trading Symbol	CB/29A
Security Exchange Name	NYSE
INA Senior Notes Due June 2031 [Member]
Title of 12(b) Security	Guarantee of Chubb INA Holdings Inc. 1.40% Senior Notes due 2031
Trading Symbol	CB/31
Security Exchange Name	NYSE
INA Senior Notes Due March 2028 [Member]
Title of 12(b) Security	Guarantee of Chubb INA Holdings Inc. 1.55% Senior Notes due 2028
Trading Symbol	CB/28
Security Exchange Name	NYSE
INA Senior Notes Due June 2027 [Member]
Title of 12(b) Security	Guarantee of Chubb INA Holdings Inc. 0.875% Senior Notes due 2027
Trading Symbol	CB/27
Security Exchange Name	NYSE
INA Senior Notes Due December 2024 [Member]
Title of 12(b) Security	Guarantee of Chubb INA Holdings Inc. 0.30% Senior Notes due 2024
Trading Symbol	CB/24A
Security Exchange Name	NYSE
Common Class A [Member]
Title of 12(b) Security	Common Shares, par value CHF 0.50 per share
Trading Symbol	CB
Security Exchange Name	NYSE

XML

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions		Sep. 30, 2023		Dec. 31, 2022
Assets
Short-term investments, at fair value (amortized cost – $5,455 and $4,962)		$ 5,454		$ 4,960
Fixed maturities available for sale, at fair value, net of valuation allowance - $158 and $169 (amortized cost – $109,355 and $93,355)		99,766		85,220
Fixed maturities held to maturity, at amortized cost, net of valuation allowance - nil and $34 (fair value – nil and $8,439)		0		8,848
Private debt held-for-investment, at amortized cost		2,401		0
Equity securities, at fair value		3,395		827
Private equities		13,362		12,355
Other investments		5,583		1,341
Total investments (refer to Note 3 for balances associated with variable interest entities (VIEs))		129,961		113,551
Cash, including restricted cash $192 and $115 (refer to Note 3 for balances associated with VIEs)		2,778		2,127
Securities lending collateral		1,469		1,523
Accrued investment income		1,040		941
Insurance and reinsurance balances receivable, net of valuation allowance - $53 and $52		13,907		11,933
Reinsurance recoverable on losses and loss expenses, net of valuation allowance - $370 and $351		19,750	[1]	18,859	[2]
Reinsurance recoverable on policy benefits	[1],[2]	315		302
Deferred policy acquisition costs		6,856		6,031
Value of business acquired		3,675		3,702
Goodwill		19,554		16,228
Other intangible assets		6,844		5,441
Prepaid reinsurance premiums		3,514		3,136
Investments in partially-owned insurance companies		188		2,507
Separate account assets		5,306		5,190
Other assets		7,591		7,546
Total assets		222,748		199,017
Liabilities
Unpaid losses and loss expenses		79,705		75,747
Unearned premiums		22,684		19,713
Future policy benefits		13,109		10,476
Market risk benefits		770		800
Policyholders' account balances		7,178		3,140
Separate account liabilities		5,306		5,190
Insurance and reinsurance balances payable		8,481		7,780
Securities lending payable		1,469		1,523
Accounts payable, accrued expenses, and other liabilities		8,422		7,148
Deferred tax liabilities		759		377
Repurchase agreements (refer to Note 3 for balances associated with VIEs)		2,617		1,419
Short-term debt		700		475
Long-term debt		13,736		14,402
Trust preferred securities		308		308
Total liabilities		165,244		148,498
Commitments and contingencies (refer to Note 13)
Shareholders’ equity
Common Shares (CHF 0.50 and 24.15 par value; 431,451,586 and 446,376,614 shares issued; 407,984,339 and 414,594,856 shares outstanding)		241		10,346
Common Shares in treasury (23,467,247 and 31,781,758 shares)		(3,747)		(5,113)
Additional paid-in capital		15,887		7,166
Retained earnings		51,510		48,305
Accumulated other comprehensive income (loss) (AOCI)		(11,518)		(10,185)
Total Chubb shareholders’ equity		52,373		50,519
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)		5,131		0
Total shareholders' equity		57,504		50,519
Total liabilities and shareholders’ equity		$ 222,748		$ 199,017

[1] Net of valuation allowance for uncollectible reinsurance.

[2] Net of valuation allowance for uncollectible reinsurance.

XML

Consolidated Balance Sheets (Parentheticals) (Unaudited) $ in Millions	Sep. 30, 2023 USD ($) shares	Dec. 31, 2022 USD ($) shares
Statement of Financial Position [Abstract]
Short-term investments amortized cost	$ 5,455	$ 4,962
Fixed maturities, available-for-sale, valuation allowance	158	169
Fixed maturities, available-for-sale, at amortized cost	109,355	93,355
Fixed maturities, held-to-maturity, valuation allowance	0	34
Fixed maturities, held-to-maturity, fair value	0	8,439
Restricted cash	192	115
Premium Receivable, Allowance for Credit Loss	53	52
Valuation allowance for uncollectible reinsurance	$ 370	$ 351
Common Shares, shares issued | shares	431,451,586	446,376,614
Common Shares, shares outstanding | shares	407,984,339	414,594,856
Treasury Stock, Common, Shares | shares	23,467,247	31,781,758

XML

Consolidated Statements Of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues
Net premiums written	$ 13,104	$ 12,012	$ 35,765	$ 31,494
Increase in unearned premiums	(430)	(482)	(1,950)	(1,678)
Net premiums earned	12,674	11,530	33,815	29,816
Net investment income	1,314	979	3,566	2,689
Net realized gains (losses)	(103)	(456)	(484)	(936)
Market risk benefits gains (losses)	(32)	69	(154)	85
Total revenues	13,853	12,122	36,743	31,654
Expenses
Losses and loss expenses	7,106	7,063	17,937	16,833
Policy benefits (includes remeasurement gains of $25, $17, $21, and $11)	938	707	2,565	1,441
Policy acquisition costs	2,178	1,970	6,142	5,415
Administrative expenses	1,060	883	2,959	2,479
Interest expense	174	150	499	416
Other (income) expense	(154)	202	(550)	(9)
Amortization of purchased intangibles	84	69	226	211
Cigna integration expenses	14	23	51	26
Total expenses	11,400	11,067	29,829	26,812
Income before income tax	2,453	1,055	6,914	4,842
Income tax expense	413	263	1,189	907
Net Income	2,040	792	5,725	3,935
Net loss attributable to noncontrolling interests	(3)	0	(3)	0
Net income attributable to Chubb	2,043	792	5,728	3,935
Other comprehensive income (loss):
Change in unrealized depreciation	(2,170)	(3,045)	(1,578)	(12,041)
Current discount rate on future policy benefits	683	479	497	1,546
Instrument-specific credit risk on market risk benefits	(5)	8	3	48
Cumulative foreign currency translation adjustment	(317)	(942)	(279)	(1,631)
Other, including postretirement benefit liability adjustment	37	(59)	52	(35)
Other comprehensive loss, before income tax	(1,772)	(3,559)	(1,305)	(12,113)
Income tax (expense) benefit related to OCI items	0	109	(104)	1,071
Other comprehensive loss	(1,772)	(3,450)	(1,409)	(11,042)
Comprehensive income (loss)	268	(2,658)	4,316	(7,107)
Comprehensive loss attributable to noncontrolling interests	(79)	0	(79)	0
Comprehensive income (loss) attributable to Chubb	$ 347	$ (2,658)	$ 4,395	$ (7,107)
Earnings per share
Basic earnings per share attributable to Chubb	$ 4.99	$ 1.90	$ 13.90	$ 9.34
Diluted earnings per share attributable to Chubb	$ 4.95	$ 1.89	$ 13.79	$ 9.26

XML

Consolidated Statements Of Shareholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock [Member]	Treasury Stock, Common	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)							$ 0
Balance – beginning of period, net of tax at Dec. 31, 2021		$ 10,985	$ (7,464)	$ 8,478	$ 47,403	$ (1,074)
CB_Par value reduction		0		0
Treasury Stock, Retired, Cost Method, Amount		(639)	4,983		(4,344)
Common Shares repurchased			(2,815)
Net shares issued under employee share-based compensation plans			318	(185)
Exercise of stock options				(35)
Share-based compensation expense				205
Funding of dividends declared to Retained earnings				(1,034)
Net loss attributable to Chubb	$ 3,935				3,935
Funding of dividends declared from Additional paid-in capital					1,034
Dividends declared on Common Shares					(1,034)
Other Comprehensive Income (Loss), Net of Tax	(11,042)					(11,042)
Balance – end of period, net of tax at Sep. 30, 2022	47,675	10,346	(4,978)	7,429	46,994	(12,116)
Net loss attributable to noncontrolling interests	0						0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest							0
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)							0
Balance – beginning of period, net of tax at Jun. 30, 2022		10,666	(6,794)	7,707	48,355	(8,666)
CB_Par value reduction		0		0
Treasury Stock, Retired, Cost Method, Amount		(320)	2,473		(2,153)
Common Shares repurchased			(685)
Net shares issued under employee share-based compensation plans			28	10
Exercise of stock options				(8)
Share-based compensation expense				66
Funding of dividends declared to Retained earnings				(346)
Net loss attributable to Chubb	792				792
Funding of dividends declared from Additional paid-in capital					346
Dividends declared on Common Shares					(346)
Other Comprehensive Income (Loss), Net of Tax	(3,450)					(3,450)
Balance – end of period, net of tax at Sep. 30, 2022	47,675	10,346	(4,978)	7,429	46,994	(12,116)
Net loss attributable to noncontrolling interests	0						0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest							0
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)							0
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value							0
Total shareholders' equity	47,675
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)	0						0
Total shareholders' equity	50,519
Balance – beginning of period, net of tax at Dec. 31, 2022	50,519	10,346	(5,113)	7,166	48,305	(10,185)
CB_Par value reduction		(9,759)		9,759
Treasury Stock, Retired, Cost Method, Amount		(346)	2,869		(2,523)
Common Shares repurchased			(1,758)
Net shares issued under employee share-based compensation plans			255	(203)
Exercise of stock options				(15)
Share-based compensation expense				230
Funding of dividends declared to Retained earnings				(1,050)
Net loss attributable to Chubb	5,728				5,728
Funding of dividends declared from Additional paid-in capital					1,050
Dividends declared on Common Shares					(1,050)
Other Comprehensive Income (Loss), Net of Tax	(1,409)					(1,333)
Balance – end of period, net of tax at Sep. 30, 2023	52,373	241	(3,747)	15,887	51,510	(11,518)
Net loss attributable to noncontrolling interests	(3)						(3)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest							(76)
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)							0
Balance – beginning of period, net of tax at Jun. 30, 2023		241	(3,174)	16,163	49,467	(9,822)
CB_Par value reduction		0		0
Treasury Stock, Retired, Cost Method, Amount		0	0		0
Common Shares repurchased			(606)
Net shares issued under employee share-based compensation plans			33	3
Exercise of stock options				(2)
Share-based compensation expense				75
Funding of dividends declared to Retained earnings				(352)
Net loss attributable to Chubb	2,043				2,043
Funding of dividends declared from Additional paid-in capital					352
Dividends declared on Common Shares					(352)
Other Comprehensive Income (Loss), Net of Tax	(1,772)					(1,696)
Balance – end of period, net of tax at Sep. 30, 2023	52,373	$ 241	$ (3,747)	$ 15,887	$ 51,510	$ (11,518)
Net loss attributable to noncontrolling interests	(3)						(3)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest							(76)
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)	5,131						5,131
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value							$ 5,210
Total shareholders' equity	$ 57,504

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Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Adjustments to reconcile net income to net cash flows from operating activities
Net realized (gains) losses	$ 484	$ 936
Market risk benefits gains (losses)	154	(85)
Amortization of premiums/discounts on fixed maturities	(80)	185
Amortization of purchased intangibles	226	211
Equity in net income of partially-owned entities	(610)	(180)
Deferred income taxes	39	55
Unpaid losses and loss expenses	3,270	4,805
Unearned premiums	2,085	1,904
Future policy benefits	570	117
Insurance and reinsurance balances payable	23	544
Accounts payable, accrued expenses, and other liabilities	(392)	337
Income taxes payable	(6)	(108)
Insurance and reinsurance balances receivable	(1,618)	(1,756)
Reinsurance recoverable	(388)	(1,850)
Deferred policy acquisition costs	(832)	(355)
Other	796	(95)
Net cash flows from operating activities	9,446	8,600
Cash flows from investing activities
Purchases of fixed maturities available for sale	(21,613)	(23,533)
Purchases of fixed maturities held to maturity	(208)	(454)
Purchases of equity securities	(968)	(837)
Sales of fixed maturities available for sale	11,293	14,142
Sales of equity securities	531	4,453
Maturities and redemptions of fixed maturities available for sale	5,107	7,882
Maturities and redemptions of fixed maturities held to maturity	708	1,357
Net change in short-term investments	484	(1,106)
Net derivative instruments settlements	(56)	(52)
Private equity contribution	(1,313)	(2,194)
Private equity distribution	938	649
Payments to Acquire Businesses, Net of Cash Acquired	216	(5,095)
Other	(553)	(414)
Net cash flows used for investing activities	(5,434)	(5,202)
Cash flows from financing activities
Dividends paid on Common Shares	(1,044)	(1,030)
Common Shares repurchased	(1,848)	(2,783)
Proceeds from issuance of repurchase agreements	3,778	3,552
Repayment of long-term debt	(475)	0
Repayment of repurchase agreements	(3,832)	(2,554)
Proceeds from share-based compensation plans	140	198
Policyholder contract deposits	415	321
Policyholder contract withdrawals	(269)	(285)
Payment, Tax Withholding, Share-based Payment Arrangement	(100)	(100)
Proceeds from (Payments for) Other Financing Activities	(90)	(49)
Net cash flows used for financing activities	(3,325)	(2,730)
Effect of foreign currency rate changes on cash and restricted cash	(36)	(215)
Net increase (decrease) in cash and restricted cash	651	453
Cash and restricted cash - beginning of period	2,127	1,811
Cash and restricted cash - end of period	2,778	2,264
Supplemental cash flow information
Taxes paid	1,101	964
Interest paid	345	339
Net income	$ 5,725	$ 3,935

XML

Consolidated Statements of Operations and Comprehensive Income (Parentheticals) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Liability for Future Policy Benefit, Remeasurement Gain (Loss)	$ 25	$ 17	$ 21	$ 11

XML

General and significant accounting policies

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

General

General and significant accounting policies

a) Basis of presentation

Chubb Limited is a holding company incorporated in Zurich, Switzerland. Chubb Limited, through its subsidiaries, provides a broad range of insurance and reinsurance products to insureds worldwide. Our results are reported through the following business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. Refer to Note 18 for additional information.

The interim unaudited consolidated financial statements include the accounts of Chubb Limited and its subsidiaries (collectively, Chubb, we, us, or our), over which Chubb exercises control, including Huatai Group, our majority-owned subsidiary, and minority-owned entities such as variable interest entities (VIEs) in which Chubb is considered the primary beneficiary. Noncontrolling interests on the consolidated financial statements represent the portion of majority-owned subsidiaries and VIEs in which we do not have direct equity ownership. These interim unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) and, in the opinion of management, reflect all adjustments necessary for a fair statement of the results and financial position for such periods. All significant intercompany accounts and transactions, including internal reinsurance transactions, have been eliminated.

On July 1, 2023, Chubb increased its investment in Huatai Group from approximately 64.2 percent to approximately 69.6 percent. Accordingly, Chubb discontinued the equity method of accounting for its investment in Huatai Group and applied consolidation accounting. Business activity for, and the financial position of, Huatai Group is reported at 100 percent on the Consolidated Financial Statements starting when Chubb obtained control of Huatai Group on July 1, 2023. The relevant amounts attributable to shareholders other than Chubb (representing approximately 30.4 percent of Huatai Group) are reflected under Noncontrolling interests, Net income (loss) attributable to noncontrolling interests, and Comprehensive income (loss) attributable to noncontrolling interests in the Consolidated Financial Statements. Refer to Note 2 for additional information.

Huatai Group's life and asset management businesses are included in the Life Insurance segment, and Huatai Group's P&C business is included in the Overseas General Insurance segment. Results for Huatai Group's non-insurance operations, comprising real estate and holding company activity, are included in Corporate.

The results of operations and cash flows for any interim period are not necessarily indicative of the results for the full year. These consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our 2022 Form 10-K.

b) Accounting policies adopted upon consolidation of Huatai Group

The following accounting policies have been adopted or updated upon the consolidation of Huatai Group and its subsidiaries (collectively, Huatai) in the third quarter of 2023:

Asset management and performance fee revenue and expenses

Huatai's asset management companies recognize revenue and expenses unrelated to Chubb's core insurance operations from the management of third-party assets. These revenues include fixed-rate management fees, which are recognized in the period in which the services are performed, and asset performance fees, which are recognized to the extent it is probable that a significant reversal will not occur. These fees and expenses are included in Other (income) expense on the Consolidated statements of operations. Refer to Note 17 for additional information.

Private debt held-for-investment, at amortized cost

Private debt held-for-investment are investments related principally to the funding of public and private projects that are mostly infrastructure related, and were acquired as part of Huatai’s investment portfolio upon consolidation. They have stated interest rates and maturity dates with fixed or determinable payments. Private debt held-for-investment are carried at amortized cost, net of a valuation allowance for credit losses. Interest income is recorded when earned.

Other investments

Chubb consolidates entities in which it has a controlling interest or is a primary beneficiary of a VIE. Huatai’s asset management businesses create investment entities known as sponsored investment products which include mutual funds with primary holdings in fixed maturities.

Other investments principally comprised these fixed maturities. These securities are reported at fair value with changes in fair value reported through the Consolidated statements of operations within Net realized gains (losses) as required under investment company accounting standards.

Consolidation of variable interest entities (VIEs)

Chubb consolidates entities in which it has a controlling interest or is a primary beneficiary of a VIE. Huatai's asset management businesses create investment entities known as sponsored investment products which include mutual funds with primary holdings in fixed maturities. These entities are created for varied purposes during the ordinary course of business, such as to obtain returns from investments, and to collect management fees for the assets managed on behalf of the third party investors. While many investors may not be related parties, Huatai invests in these funds at various ownership percentages. We determined that we are the primary beneficiary of these VIEs and generally consolidate when we hold an economic interest of 10 percent or more. The consolidation of VIEs records 100 percent of the underlying assets and liabilities of the mutual funds within the Consolidated balance sheets. The relevant amounts attributable to investors other than Chubb are reflected as Noncontrolling interests. Where Huatai's ownership in these sponsored investment products is less than 10 percent, we generally would not expect to be the primary beneficiary of these VIEs. Refer to Note 3 g) for additional information.

c) Accounting guidance adopted in 2023

Targeted Improvements to the Accounting for Long-Duration Contracts

Effective January 1, 2023, we adopted new guidance on the accounting for long-duration contracts (LDTI). The new accounting guidance requires more frequent updating of assumptions and a standardized discount rate for the future policy benefit liability, a requirement to use the fair value measurement model for policies with market risk benefits, simplified amortization of deferred acquisition costs, and enhanced disclosures.

With the exception of market risk benefits, we adopted this guidance on a modified retrospective basis. Under the modified retrospective basis, the liability for future policy benefits is updated to remove any amounts related to changes to the original discount rate at January 1, 2021 (the transition date) in AOCI and future cash flow assumptions are applied to contracts in force. The liability for future policy benefits prior to the transition date continues to use the original discount rate (interest accretion rate). The guidance for long-duration contracts applicable to market risk benefits, primarily assumed reinsurance programs involving minimum benefit guarantees under variable annuity contracts, was adopted on a retrospective transition approach. Under the retrospective transition approach, we calculated the fair value of market risk benefits which were previously accounted for under an insurance accounting model and recognized an adjustment to retained earnings as of January 1, 2021.

On January 1, 2021, we recognized a cumulative effect adjustment and increased beginning retained earnings by $52 million, and decreased AOCI by $1.8 billion. Results for the prior reporting periods in this report are presented in accordance with the new guidance. We also adopted the required disclosures in Note 6 Deferred acquisition costs, Note 9 Future policy benefits, Note 10 Policyholders’ account balances, Note 11 Market risk benefits, and Note 12 Separate accounts.

The impact of adoption of the new guidance on our historical financial statements is as follows:

	December 31, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated balance sheet
Reinsurance recoverable on losses and loss expenses	$	18,901	$	(42)	$	18,859
Reinsurance recoverable on policy benefits	303		(1)		302
Deferred policy acquisition costs	5,788		243		6,031
Value of business acquired	3,596		106		3,702
Prepaid reinsurance premiums	3,140		(4)		3,136
Investments in partially-owned insurance companies	2,877		(370)		2,507
Unpaid losses and loss expenses	76,323		(576)		75,747
Unearned premiums	20,360		(647)		19,713
Future policy benefits	10,120		356		10,476
Market risk benefits	—		800		800
Insurance and reinsurance balances payable	7,795		(15)		7,780
Deferred tax liabilities	292		85		377
Retained Earnings	48,334		(29)		48,305
Accumulated other comprehensive income (loss)	(10,193)		8		(10,185)

Excluded from the table above is the reclassification of Separate account assets, Separate account liabilities, and Policyholders' account balances as separate line items on the Consolidated balance sheets. Separate accounts assets were previously classified in Other assets, and Separate account liabilities and Policyholders' account balances were previously classified in Accounts payable, accrued expenses, and other liabilities.

	Three Months Ended						Nine Months Ended
	September 30, 2022						September 30, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted		As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statements of operations and comprehensive income
Net premiums written	$	12,020	$	(8)	$	12,012	$	31,521	$	(27)	$	31,494
Net premiums earned	11,535		(5)		11,530		29,838		(22)		29,816
Net realized gains (losses)	(384)		(72)		(456)		(787)		(149)		(936)
Market risk benefits gains (losses)	—		69		69		—		85		85
Losses and loss expenses	7,279		(216)		7,063		17,474		(641)		16,833
Policy benefits	486		221		707		790		651		1,441
Policy acquisition costs	1,975		(5)		1,970		5,451		(36)		5,415
Other (income) expense	188		14		202		(21)		12		(9)
Income tax expense	265		(2)		263		913		(6)		907
Net Income	812		(20)		792		4,001		(66)		3,935
Other comprehensive income
Change in current discount rate on future policy benefits	—		479		479		—		1,546		1,546
Change in instrument-specific credit risk on market risk benefits	—		8		8		—		48		48
Income tax benefit related to OCI items	165		(56)		109		1,222		(151)		1,071
Comprehensive income (loss)	(3,093)		435		(2,658)		(8,529)		1,422		(7,107)

	Nine Months Ended
	September 30,2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statement of cash flows
Net cash flows from operating activities	$	8,592	$	8	$	8,600
Net cash flows used for financing activities	(2,722)		(8)		(2,730)

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of future policy benefits:

	Life Insurance								Overseas General Insurance				Offsetting Equity Line Classification
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		A&H		Total
Future policy benefits
Balance – December 31, 2020 (1)	$	391	$	2,578	$	2,270	$	72	$	754	$	6,065
Effect of change in current discount rate	63		1,189		299		17		19		1,587		AOCI
Balance – January 1, 2021	$	454	$	3,767	$	2,569	$	89	$	773	$	7,652

(1)     Includes future policy benefits previously included within Unpaid losses on the pre-adoption Consolidated balance sheets, primarily certain international A&H business, and excludes deferred profit liability and certain guaranteed minimum death benefits reclassified to Market risk benefits on the post adoption period balance sheets.

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of market risk benefits:

(in millions of U.S. dollars)			Offsetting Equity Line Classification
Market risk benefits
Balance – December 31, 2020	$	1,138
Cumulative effect of changes in instrument-specific credit risk between original contract issuance date and transition date (1)	84		AOCI
Other fair value adjustments	(59)		Retained Earnings
Balance – January 1, 2021	$	1,163

(1)     Includes $77 million of instrument-specific credit risk allocated from retained earnings to AOCI.

Significant accounting policies

The following accounting policies have been updated to reflect the adoption of LDTI. Refer to Note 1 in the 2022 Form 10-K for a complete description of our accounting policies.

Deferred policy acquisition costs (DAC)

Policy acquisition costs on long-duration contracts are grouped by contract type and issue year into cohorts consistent with the grouping used in estimating the associated liability. Deferred policy acquisition costs are amortized on a constant level basis over the expected term of the related contracts to approximate straight-line amortization. The constant level basis used for amortization is the face amount in force and is projected using the same assumptions used in estimating the liability for future policy benefits. If those projected assumptions change in future periods, they will be reflected in the cohort level amortization basis at that time. Unexpected changes in the in-force portfolio, due to variances in mortality and lapse experience, are recognized over the contract term. Changes in future mortality and lapse assumptions are also recognized prospectively over the remaining expected contract term.

Future policy benefits

For traditional and limited-payment contracts, contracts are grouped into cohorts by contract type and issue year to determine a liability for future policy benefits. The future policy benefit liability (FPBL) is the present value of estimated future policy benefits to be paid to or on behalf of policyholders and certain related expenses less the present value of estimated future net premiums to be collected from policyholders, and is accrued as premium revenue is recognized. The valuation of this liability requires management to make estimates and assumptions regarding expenses, mortality, and persistency. Estimates are primarily based on historical experience. Actual results could differ materially from these estimates.

The liability is adjusted for differences between actual and expected experience. With the exception of the expense assumption, we review our future cash flow assumptions at least annually to determine if the net premium ratio (NPR), the mechanism used to record the liability as premium is earned, used to calculate the liability should be changed at that time. We have elected to use expense assumptions that are locked in at contract inception and are not subsequently reviewed or updated. Each quarter, we update the cash flows expected over the entire life of each cohort for actual historical experience and projected future cash

flows. These updated cash flows are used to calculate the revised NPR, which is used to derive an updated FPBL as of the beginning of the current reporting period, discounted at the original contract issuance discount rate. This amount is then compared to the carrying amount of the liability as of that same date, but before the updating of cash flow assumptions, to determine the current period change in FPBL. This current period change in the liability is the liability remeasurement gain or loss and is recorded in Policy benefits in the Consolidated statements of operations. In subsequent periods, the revised NPR is used to measure the FPBL until future revisions become required.

For traditional and limited-payment contracts, the discount rate assumption based on an upper-medium grade fixed-income instrument yield. An equivalent rate is derived based on A-credit-rated fixed-income instruments with similar duration to the liability. The discount rate assumption is updated quarterly and used to remeasure the liability at each reporting date, with the resulting change reflected in Other comprehensive income. For liability cash flows that are projected beyond the duration of market-observable A-credit-rated fixed-income instruments, we use the last market-observable yield level, as the basis for a linear interpolation to determine yield assumptions for durations that do not have market-observable yields.

Deferred profit liability

For limited-payment products, gross premiums received in excess of net premiums are deferred at initial recognition as a deferred profit liability (DPL) and recorded as a component of Future policy benefits in the Consolidated balance sheets. Net premiums are measured using actual cash flows and future cash flow assumptions consistent with those used in the measurement of the liability for future policy benefits and remeasured quarterly. The DPL is amortized in proportion to the discounted in-force policies. Interest is accreted on the balance of the DPL using the discount rate consistent with the interest accretion on the FPBL. The recalculated DPL, including adjusted amortization through the current period, is compared to the current carrying amount and the difference is recognized as an adjustment to Policy benefits in the Consolidated statements of operations as a remeasurement gain or loss.

Market risk benefits

Chubb reinsures various death and living benefit guarantees associated with variable annuities issued primarily in the United States, which are referred to as market risk benefits. These reinsurance contracts provide both protection to the ceding entity from other-than-nominal capital market risk and expose us to other-than-nominal capital market risk.

Market risk benefits are measured at fair value using a valuation model based on current net exposures, market data, our experience, and other factors. Changes in fair value are recognized in Market risk benefits gains (losses) in the Consolidated statements of operations, except the change in fair value due to a change in the instrument-specific credit risk, which is recognized in other comprehensive income. Refer to Note 11 for additional information.

Accounting guidance adopted

Accounting guidance adopted in 2023

Targeted Improvements to the Accounting for Long-Duration Contracts

Effective January 1, 2023, we adopted new guidance on the accounting for long-duration contracts (LDTI). The new accounting guidance requires more frequent updating of assumptions and a standardized discount rate for the future policy benefit liability, a requirement to use the fair value measurement model for policies with market risk benefits, simplified amortization of deferred acquisition costs, and enhanced disclosures.

With the exception of market risk benefits, we adopted this guidance on a modified retrospective basis. Under the modified retrospective basis, the liability for future policy benefits is updated to remove any amounts related to changes to the original discount rate at January 1, 2021 (the transition date) in AOCI and future cash flow assumptions are applied to contracts in force. The liability for future policy benefits prior to the transition date continues to use the original discount rate (interest accretion rate). The guidance for long-duration contracts applicable to market risk benefits, primarily assumed reinsurance programs involving minimum benefit guarantees under variable annuity contracts, was adopted on a retrospective transition approach. Under the retrospective transition approach, we calculated the fair value of market risk benefits which were previously accounted for under an insurance accounting model and recognized an adjustment to retained earnings as of January 1, 2021.

On January 1, 2021, we recognized a cumulative effect adjustment and increased beginning retained earnings by $52 million, and decreased AOCI by $1.8 billion. Results for the prior reporting periods in this report are presented in accordance with the new guidance. We also adopted the required disclosures in Note 6 Deferred acquisition costs, Note 9 Future policy benefits, Note 10 Policyholders’ account balances, Note 11 Market risk benefits, and Note 12 Separate accounts.

The impact of adoption of the new guidance on our historical financial statements is as follows:

	December 31, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated balance sheet
Reinsurance recoverable on losses and loss expenses	$	18,901	$	(42)	$	18,859
Reinsurance recoverable on policy benefits	303		(1)		302
Deferred policy acquisition costs	5,788		243		6,031
Value of business acquired	3,596		106		3,702
Prepaid reinsurance premiums	3,140		(4)		3,136
Investments in partially-owned insurance companies	2,877		(370)		2,507
Unpaid losses and loss expenses	76,323		(576)		75,747
Unearned premiums	20,360		(647)		19,713
Future policy benefits	10,120		356		10,476
Market risk benefits	—		800		800
Insurance and reinsurance balances payable	7,795		(15)		7,780
Deferred tax liabilities	292		85		377
Retained Earnings	48,334		(29)		48,305
Accumulated other comprehensive income (loss)	(10,193)		8		(10,185)

Excluded from the table above is the reclassification of Separate account assets, Separate account liabilities, and Policyholders' account balances as separate line items on the Consolidated balance sheets. Separate accounts assets were previously classified in Other assets, and Separate account liabilities and Policyholders' account balances were previously classified in Accounts payable, accrued expenses, and other liabilities.

	Three Months Ended						Nine Months Ended
	September 30, 2022						September 30, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted		As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statements of operations and comprehensive income
Net premiums written	$	12,020	$	(8)	$	12,012	$	31,521	$	(27)	$	31,494
Net premiums earned	11,535		(5)		11,530		29,838		(22)		29,816
Net realized gains (losses)	(384)		(72)		(456)		(787)		(149)		(936)
Market risk benefits gains (losses)	—		69		69		—		85		85
Losses and loss expenses	7,279		(216)		7,063		17,474		(641)		16,833
Policy benefits	486		221		707		790		651		1,441
Policy acquisition costs	1,975		(5)		1,970		5,451		(36)		5,415
Other (income) expense	188		14		202		(21)		12		(9)
Income tax expense	265		(2)		263		913		(6)		907
Net Income	812		(20)		792		4,001		(66)		3,935
Other comprehensive income
Change in current discount rate on future policy benefits	—		479		479		—		1,546		1,546
Change in instrument-specific credit risk on market risk benefits	—		8		8		—		48		48
Income tax benefit related to OCI items	165		(56)		109		1,222		(151)		1,071
Comprehensive income (loss)	(3,093)		435		(2,658)		(8,529)		1,422		(7,107)

	Nine Months Ended
	September 30,2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statement of cash flows
Net cash flows from operating activities	$	8,592	$	8	$	8,600
Net cash flows used for financing activities	(2,722)		(8)		(2,730)

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of future policy benefits:

	Life Insurance								Overseas General Insurance				Offsetting Equity Line Classification
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		A&H		Total
Future policy benefits
Balance – December 31, 2020 (1)	$	391	$	2,578	$	2,270	$	72	$	754	$	6,065
Effect of change in current discount rate	63		1,189		299		17		19		1,587		AOCI
Balance – January 1, 2021	$	454	$	3,767	$	2,569	$	89	$	773	$	7,652

(1)     Includes future policy benefits previously included within Unpaid losses on the pre-adoption Consolidated balance sheets, primarily certain international A&H business, and excludes deferred profit liability and certain guaranteed minimum death benefits reclassified to Market risk benefits on the post adoption period balance sheets.

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of market risk benefits:

(in millions of U.S. dollars)			Offsetting Equity Line Classification
Market risk benefits
Balance – December 31, 2020	$	1,138
Cumulative effect of changes in instrument-specific credit risk between original contract issuance date and transition date (1)	84		AOCI
Other fair value adjustments	(59)		Retained Earnings
Balance – January 1, 2021	$	1,163

(1)     Includes $77 million of instrument-specific credit risk allocated from retained earnings to AOCI.

Basis of presentation

Basis of presentation

Chubb Limited is a holding company incorporated in Zurich, Switzerland. Chubb Limited, through its subsidiaries, provides a broad range of insurance and reinsurance products to insureds worldwide. Our results are reported through the following business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. Refer to Note 18 for additional information.

The interim unaudited consolidated financial statements include the accounts of Chubb Limited and its subsidiaries (collectively, Chubb, we, us, or our), over which Chubb exercises control, including Huatai Group, our majority-owned subsidiary, and minority-owned entities such as variable interest entities (VIEs) in which Chubb is considered the primary beneficiary. Noncontrolling interests on the consolidated financial statements represent the portion of majority-owned subsidiaries and VIEs in which we do not have direct equity ownership. These interim unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) and, in the opinion of management, reflect all adjustments necessary for a fair statement of the results and financial position for such periods. All significant intercompany accounts and transactions, including internal reinsurance transactions, have been eliminated.

On July 1, 2023, Chubb increased its investment in Huatai Group from approximately 64.2 percent to approximately 69.6 percent. Accordingly, Chubb discontinued the equity method of accounting for its investment in Huatai Group and applied consolidation accounting. Business activity for, and the financial position of, Huatai Group is reported at 100 percent on the Consolidated Financial Statements starting when Chubb obtained control of Huatai Group on July 1, 2023. The relevant amounts attributable to shareholders other than Chubb (representing approximately 30.4 percent of Huatai Group) are reflected under Noncontrolling interests, Net income (loss) attributable to noncontrolling interests, and Comprehensive income (loss) attributable to noncontrolling interests in the Consolidated Financial Statements. Refer to Note 2 for additional information.

Huatai Group's life and asset management businesses are included in the Life Insurance segment, and Huatai Group's P&C business is included in the Overseas General Insurance segment. Results for Huatai Group's non-insurance operations, comprising real estate and holding company activity, are included in Corporate.

The results of operations and cash flows for any interim period are not necessarily indicative of the results for the full year. These consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our 2022 Form 10-K.

Other Investment

Other investments

Chubb consolidates entities in which it has a controlling interest or is a primary beneficiary of a VIE. Huatai’s asset management businesses create investment entities known as sponsored investment products which include mutual funds with primary holdings in fixed maturities.

Other investments principally comprised these fixed maturities. These securities are reported at fair value with changes in fair value reported through the Consolidated statements of operations within Net realized gains (losses) as required under investment company accounting standards.

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Acquisitions

9 Months Ended

Sep. 30, 2023

Business Combinations [Abstract]

Acquisitions

Acquisitions

Huatai Group

Huatai Insurance Group Co., Ltd. (Huatai Group) is a Chinese financial services holding company and the parent company of, among others, Huatai Property & Casualty Insurance Co., Ltd. (Huatai P&C), Huatai Life Insurance Co., Ltd. (Huatai Life), Huatai Asset Management Co., Ltd., and Huatai Baoxing Fund Management Co., Ltd., of which Huatai Group owns 100 percent, 80 percent, 82 percent, and 85 percent, respectively (collectively, Huatai).

On July 1, 2023, Chubb increased its investment in Huatai Group from approximately 64.2 percent to approximately 69.6 percent. Chubb paid $318 million for the incremental 5.4 percent ownership interest.

On October 1, 2023, we closed on an incremental ownership interest of approximately 2.5 percent for $146 million, which was previously paid as a deposit. Chubb has agreements in place to acquire approximately 14.1 percent of incremental ownership interests, pending completion of certain closing conditions, of which approximately 3 percent also requires regulatory approval. We have paid deposits of $416 million for the approximately 14.1 percent of ownership interests, and the remaining aggregate purchase price to be paid upon closing is approximately $433 million, based on current exchange rates. Refer to Note 2 to the Consolidated Financial Statements in our 2022 Form 10-K for additional information.

Upon discontinuation of the equity method of accounting, Chubb remeasured the 64.2 percent equity method investment to its fair value of $4.1 billion as of July 1, 2023, resulting in a one-time realized gain of $744 million after-tax, reflecting the remeasurement of the previously held equity interest's historical carrying value to fair value. There was also a net realized and unrealized loss of $17 million after-tax reflecting the write-off of AOCI loss balances accumulated while under the equity method of $611 million with an offset to realized loss of $628 million.

The acquisition of a controlling majority interest in Huatai Group generated $3,394 million of Goodwill, attributable to expected growth and profitability, and $1,655 million of Other intangible assets. None of the goodwill is expected to be deductible for income tax purposes. Additionally, the acquisition of a controlling majority interest in Huatai Group generated $309 million of Value of business acquired (VOBA). Chubb financed the transaction through available cash on hand. Direct costs related to the acquisition were expensed as incurred. These include one-time costs that are directly attributable to third-party consulting fees and other professional and legal fees related to the acquisition.

The following table summarizes Chubb's best estimate of fair value of the assets acquired and liabilities assumed on July 1, 2023. The fair value of assets and liabilities are preliminary and may change with offsetting adjustments to goodwill. Chubb may make further adjustments to its purchase price allocation and the fair value of noncontrolling interest through the end of the permissible one-year measurement period.

Preliminary estimate of Huatai Group assets and liabilities consolidated	July 1
(in millions of U.S. dollars)	2023
Assets
Investments and Cash	$	13,346
Accrued investment income	60
Insurance and reinsurance balances receivable	277
Reinsurance recoverable on losses and loss expenses	581
Reinsurance recoverable on future policy benefits	27
Value of business acquired	309
Goodwill and intangible assets	5,049
Other assets	748
Total assets	$	20,397
Liabilities
Unpaid losses and loss expenses	$	831
Unearned premiums	800
Future policy benefits	2,287
Policyholders' account balances	4,014
Insurance and reinsurance balances payable	644
Accounts payable, accrued expenses, and other liabilities	702
Deferred tax liabilities	232
Repurchase agreements	1,269
Total liabilities	$	10,779
Net acquired assets, including goodwill, attributable to Chubb	4,408
Net acquired assets, attributable to noncontrolling interests	5,210
Net acquired assets, including goodwill	$	9,618

The following table summarizes the results of the acquired Huatai Group operations that have been included within our Consolidated statements of operations for the three and nine months ended September 30, 2023:

(in millions of U.S. dollars)
Total revenues	$	389
Net loss	$	(11)
Net loss attributable to Chubb	$	(9)

The preliminary purchase price allocation to intangible assets recorded in connection with the Huatai Group acquisition and their related useful lives at July 1, 2023, are as follows:

(in millions of U.S. dollars)	Amount		Weighted-average useful life
Definite life
Agency distribution relationships	$	332	20 years
Asset management customer contracts	94		16 years
Unearned premium reserves (UPR) intangible asset	95		3 years
Land use rights	569		31 years
Technology	45		6 years
Indefinite life
Trademarks	398		Indefinite
Asset management mutual funds	122		Indefinite
Total identified intangible assets	$	1,655

The following table presents supplemental unaudited pro forma consolidated information for the periods indicated as though the acquisition of a controlling majority interest in Huatai Group that occurred on July 1, 2023, had instead occurred on January 1, 2022. The unaudited pro forma consolidated financial information is presented for informational purposes only and is not necessarily indicative of the operating results that would have occurred had the acquisition of a controlling majority interest been consummated on January 1, 2022, nor is it necessarily indicative of future operating results. Significant assumptions used to determine pro forma operating results include amortization of VOBA and other intangible assets.

	Three Months Ended				Nine Months Ended
Pro forma:	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Net premiums earned	$	12,674	$	11,952	$	34,605	$	30,996
Total revenues	$	13,755	$	12,612	$	37,589	$	33,019
Net income	$	1,905	$	787	$	5,595	$	3,975
Net income attributable to Chubb	$	1,912	$	777	$	5,587	$	3,935

Cigna’s Accident and Health (A&H) and Life Insurance Business in Asian Markets

On July 1, 2022, we completed the acquisition of the life and non-life insurance companies that house the personal accident, supplemental health, and life insurance business of Cigna in several Asian markets. Chubb paid approximately $5.4 billion in cash for the operations, which include Cigna's accident and health (A&H) and life business in Korea, Taiwan, New Zealand, Thailand, Hong Kong, and Indonesia, collectively referred to as Cigna's business in Asia. This complementary strategic acquisition expands our presence and advances our long-term growth opportunity in Asia. Effective July 1, 2022, the results of operations of this acquired business are reported primarily in our Life Insurance segment and, to a lesser extent, our Overseas General Insurance segment. Refer to the 2022 Form 10-K for additional information on this acquisition.

The acquisition of Cigna's business in Asia generated $1,177 million of goodwill, attributable to expected growth and profitability, and $309 million of other intangible assets. None of the goodwill is expected to be deductible for income tax purposes. Additionally, the acquisition of Cigna's business in Asia generated $3,633 million of value of business acquired (VOBA). Chubb financed the transaction through a combination of available cash and $2.0 billion in repurchase agreements that expired at the end of 2022. Direct costs related to the acquisition were expensed as incurred.

The following table summarizes the fair value of the assets acquired and liabilities assumed at July 1, 2022:

Assets acquired and liabilities assumed from Cigna's business in Asia	July 1
(in millions of U.S. dollars)	2022
Assets
Investments and Cash	$	5,274
Accrued investment income	33
Insurance and reinsurance balances receivable	52
Reinsurance recoverable on losses and loss expenses	3
Reinsurance recoverable on future policy benefits	85
Value of business acquired	3,633
Goodwill and intangible assets	1,486
Other assets	648
Total assets	$	11,214
Liabilities
Unpaid losses and loss expenses	$	12
Unearned premiums	60
Future policy benefits	3,856
Insurance and reinsurance balances payable	115
Accounts payable, accrued expenses, and other liabilities	926
Deferred tax liabilities	886
Total liabilities	$	5,855
Net acquired assets, including goodwill	5,359
Total	$	11,214

The following table summarizes the results of the acquired Cigna business in Asia that have been included within our Consolidated statements of operations for the three and nine months ended September 30, 2022:

(in millions of U.S. dollars)
Total revenues	$	681
Net income	$	17

The following table presents supplemental unaudited pro forma consolidated information for the periods indicated as though the acquisition of Cigna's business in Asia that occurred on July 1, 2022, had instead occurred on January 1, 2021. The unaudited pro forma consolidated financial information is presented for informational purposes only and is not necessarily indicative of the operating results that would have occurred had the acquisition been consummated on January 1, 2021, nor is it necessarily indicative of future operating results. Significant assumptions used to determine pro forma operating results include amortization of VOBA and other intangible assets and recognition of interest expense associated with the repurchase agreement transactions used to effect the acquisition.

	Three Months Ended		Nine Months Ended
Pro forma:	September 30		September 30
(in millions of U.S. dollars)	2022		2022
Net premiums earned	$	11,530	$	31,341
Total revenues	$	12,124	$	33,161
Net income	$	837	$	4,172

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Investments

9 Months Ended

Sep. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Investments

Investments

a) Transfers of securities

In June 2023, we determined that we no longer have the intent to hold securities in our held to maturity (HTM) portfolio until maturity. As a result, our entire HTM securities portfolio was transferred to the available for sale (AFS) portfolio. This decision allowed us to increase our flexibility to execute on our investment strategy and take advantage of the continuing higher reinvestment environment while not making any major change to our current asset allocation. At the time of the transfer on June 30, 2023, these securities had a carrying value of $8.2 billion and a fair value of $7.8 billion, resulting in an increase to Unrealized depreciation in OCI of $428 million, after-tax. This transfer represents a non-cash transaction and does not impact the Consolidated Statements of Cash Flows.

b) Fixed maturities

September 30, 2023	Amortized Cost		Valuation Allowance		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Available for sale
U.S. Treasury / Agency	$	3,944	$	—	$	2	$	(265)	$	3,681
Non-U.S.	34,912		(53)		239		(2,381)		32,717
Corporate and asset-backed securities	44,932		(104)		61		(4,034)		40,855
Mortgage-backed securities	22,402		(1)		6		(2,802)		19,605
Municipal	3,165		—		2		(259)		2,908
	$	109,355	$	(158)	$	310	$	(9,741)	$	99,766

December 31, 2022	Amortized Cost		Valuation Allowance		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Available for sale
U.S. Treasury / Agency	$	2,792	$	—	$	5	$	(171)	$	2,626
Non-U.S.	28,064		(59)		108		(2,205)		25,908
Corporate and asset-backed securities	40,547		(107)		49		(3,534)		36,955
Mortgage-backed securities	17,871		(3)		4		(2,021)		15,851
Municipal	4,081		—		8		(209)		3,880
	$	93,355	$	(169)	$	174	$	(8,140)	$	85,220

December 31, 2022	Amortized Cost		Valuation Allowance		Net Carrying Value		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Held to maturity
U.S. Treasury / Agency	$	1,417	$	—	$	1,417	$	1	$	(48)	$	1,370
Non-U.S.	1,140		(4)		1,136		—		(82)		1,054
Corporate and asset-backed securities	1,733		(28)		1,705		1		(126)		1,580
Mortgage-backed securities	1,456		(1)		1,455		—		(104)		1,351
Municipal	3,136		(1)		3,135		1		(52)		3,084
	$	8,882	$	(34)	$	8,848	$	3	$	(412)	$	8,439

The following table presents the amortized cost of our held to maturity securities according to S&P rating:

	December 31, 2022
(in millions of U.S. dollars, except for percentages)	Amortized cost		% of Total
AAA	$	1,612	18	%
AA	5,023		57	%
A	1,634		18	%
BBB	593		7	%
BB	20		—	%
Total	$	8,882	100	%

The following table presents fixed maturities by contractual maturity:

	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)	Net Carrying Value		Fair Value		Net Carrying Value		Fair Value
Available for sale
Due in 1 year or less	$	4,805	$	4,805	$	2,962	$	2,962
Due after 1 year through 5 years	31,738		31,738		24,791		24,791
Due after 5 years through 10 years	27,452		27,452		26,679		26,679
Due after 10 years	16,166		16,166		14,937		14,937
	80,161		80,161		69,369		69,369
Mortgage-backed securities	19,605		19,605		15,851		15,851
	$	99,766	$	99,766	$	85,220	$	85,220
Held to maturity
Due in 1 year or less	$	—	$	—	$	1,015	$	1,003
Due after 1 year through 5 years	—		—		3,658		3,531
Due after 5 years through 10 years	—		—		1,460		1,423
Due after 10 years	—		—		1,260		1,131
	—		—		7,393		7,088
Mortgage-backed securities	—		—		1,455		1,351
	$	—	$	—	$	8,848	$	8,439

Expected maturities could differ from contractual maturities because borrowers may have the right to call or prepay obligations, with or without call or prepayment penalties. 

c) Gross unrealized loss

Fixed maturities in an unrealized loss position at September 30, 2023, and December 31, 2022, comprised both investment grade and below investment grade securities for which fair value declined, principally due to rising interest rates since the date of purchase. Refer to Note 1 e) in the 2022 Form 10-K for further information on factors considered in the evaluation of expected credit losses.

The following tables present, for AFS fixed maturities in an unrealized loss position (including securities on loan) that are not deemed to have expected credit losses, the aggregate fair value and gross unrealized loss by length of time the security has been in an unrealized loss position:

	0 – 12 Months				Over 12 Months				Total
September 30, 2023	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
(in millions of U.S. dollars)
U.S. Treasury / Agency	$	1,108	$	(32)	$	2,449	$	(233)	$	3,557	$	(265)
Non-U.S.	8,591		(280)		16,631		(1,670)		25,222		(1,950)
Corporate and asset-backed securities	10,120		(362)		22,672		(2,441)		32,792		(2,803)
Mortgage-backed securities	5,827		(249)		13,450		(2,510)		19,277		(2,759)
Municipal	1,389		(51)		1,269		(208)		2,658		(259)
Total AFS fixed maturities	$	27,035	$	(974)	$	56,471	$	(7,062)	$	83,506	$	(8,036)

	0 – 12 Months				Over 12 Months				Total
December 31, 2022	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
(in millions of U.S. dollars)
U.S. Treasury / Agency	$	2,152	$	(125)	$	386	$	(46)	$	2,538	$	(171)
Non-U.S.	15,538		(1,012)		5,490		(704)		21,028		(1,716)
Corporate and asset-backed securities	25,687		(1,793)		4,190		(552)		29,877		(2,345)
Mortgage-backed securities	10,561		(1,033)		4,770		(941)		15,331		(1,974)
Municipal	3,251		(152)		155		(48)		3,406		(200)
Total AFS fixed maturities	$	57,189	$	(4,115)	$	14,991	$	(2,291)	$	72,180	$	(6,406)

At September 30, 2023, the tax benefit on certain unrealized losses in our investment portfolio was reduced by a valuation allowance of $1,108 million necessary due to limitations on the utilization of these losses. As part of evaluating whether it was more likely than not that we could realize these losses, we considered realized gains, carryback ability and available tax planning strategies.

The following table presents a roll-forward of valuation allowance for expected credit losses on fixed maturities:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Available for sale
Valuation allowance for expected credit losses - beginning of period	$	193	$	78	$	169	$	14
Provision for expected credit loss	34		91		172		169
Write-offs charged against the expected credit loss	(1)		—		(5)		—
Foreign currency revaluation	—		(2)		—		(2)
Recovery of expected credit loss	(68)		(20)		(178)		(34)
Valuation allowance for expected credit losses - end of period	$	158	$	147	$	158	$	147
Held to maturity
Valuation allowance for expected credit losses - beginning of period	$	—	$	34	$	34	$	35
Provision for expected credit loss	—		—		—		1
Recovery of expected credit loss	—		(1)		(34)		(3)
Valuation allowance for expected credit losses - end of period	$	—	$	33	$	—	$	33

d) Net realized gains (losses)

The following table presents the components of Net realized gains (losses):

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Fixed maturities:
Gross realized gains	$	97	$	144	$	116	$	545
Gross realized losses	(185)		(331)		(457)		(1,158)
Net (provision for) recovery of expected credit losses	34		(70)		44		(133)
Impairment (1)	(16)		(22)		(60)		(111)
Total fixed maturities	(70)		(279)		(357)		(857)
Equity securities	(100)		(80)		(61)		(287)
Private equities	40		(42)		75		17
Foreign exchange	(67)		202		(122)		546
Investment and embedded derivative instruments	9		(198)		(92)		(232)
Other derivative instruments	(7)		(19)		(6)		(9)
Other (2)	92		(40)		79		(114)
Net realized gains (losses) (pre-tax)	$	(103)	$	(456)	$	(484)	$	(936)

(1)Relates to certain securities we intended to sell and securities written to market entering default.

(2)The three and nine months ended September 30, 2023 Includes a one-time realized gain of $116 million as a result of the consolidation of Huatai Group.

Realized gains and losses from Other investments, Equity securities and Private equities from the table above include sales of securities and unrealized gains and losses from fair value changes as follows:

									Three Months Ended
									September 30
	2023								2022
(in millions of U.S. dollars)	Other Investments		Equity Securities		Private Equities		Total		Equity Securities		Private Equities		Total
Net gains (losses) recognized during the period	$	(1)	$	(100)	$	40	$	(61)	$	(80)	$	(42)	$	(122)
Less: Net gains (losses) recognized from sales of securities	—		(45)		—		(45)		(12)		—		(12)
Unrealized gains (losses) recognized for securities still held at reporting date	$	(1)	$	(55)	$	40	$	(16)	$	(68)	$	(42)	$	(110)

									Nine Months Ended
									September 30
	2023								2022
(in millions of U.S. dollars)	Other Investments		Equity Securities		Private Equities		Total		Equity Securities		Private Equities		Total
Net gains (losses) recognized during the period	$	(1)	$	(61)	$	75	$	13	$	(287)	$	17	$	(270)
Less: Net gains (losses) recognized from sales of securities	—		(48)		—		(48)		406		—		406
Unrealized gains (losses) recognized for securities still held at reporting date	$	(1)	$	(13)	$	75	$	61	$	(693)	$	17	$	(676)

e) Alternative investments

Alternative investments include partially-owned investment companies, investment funds, and limited partnerships measured at fair value using net asset value (NAV) as a practical expedient. The following table presents, by investment category, the expected liquidation period, fair value, and maximum future funding commitments of alternative investments:

	Expected Liquidation Period of Underlying Assets	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)		Fair Value		Maximum Future Funding Commitments		Fair Value		Maximum Future Funding Commitments
Financial	2 to 10 Years	$	1,219	$	384	$	1,074	$	505
Real assets	2 to 13 Years	2,136		526		2,166		681
Distressed	2 to 8 Years	1,160		810		1,048		755
Private credit	3 to 8 Years	319		309		215		429
Traditional	2 to 14 Years	8,222		4,280		7,424		5,025
Vintage	1 to 3 Years	78		—		55		—
Investment funds	Not Applicable	228		—		373		—
		$	13,362	$	6,309	$	12,355	$	7,395

Included in all categories in the above table, except for Investment funds, are investments for which Chubb will never have the contractual option to redeem but receives distributions based on the liquidation of the underlying assets. Further, for all categories except for Investment funds, Chubb does not have the ability to sell or transfer the investments without consent from the general partner of the individual funds.

Investment Category:	Consists of investments in private equity funds:
Financial	targeting financial services companies, such as financial institutions and insurance services worldwide
Real assets	targeting investments related to hard physical assets, such as real estate, infrastructure and natural resources
Distressed	targeting distressed corporate debt/credit and equity opportunities in the U.S.
Private credit	targeting privately originated corporate debt investments, including senior secured loans and subordinated bonds
Traditional	employing traditional private equity investment strategies, such as buyout and growth equity globally
Vintage	funds where the initial fund term has expired

    

Investment funds employ various investment strategies, such as long/short equity and arbitrage/distressed. Included in this category are investments for which Chubb has the option to redeem at agreed upon value as described in each investment fund’s subscription agreement. Depending on the terms of the various subscription agreements, investment fund investments may be redeemed monthly, quarterly, semi-annually, or annually. If Chubb wishes to redeem an investment fund investment, it must first determine if the investment fund is still in a lock-up period (a time when Chubb cannot redeem its investment so that the investment fund manager has time to build the portfolio). If the investment fund is no longer in its lock-up period, Chubb must then notify the investment fund manager of its intention to redeem by the notification date prescribed by the subscription agreement. Subsequent to notification, the investment fund can redeem Chubb’s investment within several months of the notification. Notice periods for redemption of the investment funds are up to 270 days. Chubb can redeem its investment funds without consent from the investment fund managers.

f) Restricted assets

Chubb is required to maintain assets on deposit with various regulatory authorities to support its insurance and reinsurance operations. These requirements are generally promulgated in the statutory regulations of the individual jurisdictions. The assets on deposit are available to settle insurance and reinsurance liabilities. Chubb is also required to restrict assets pledged under repurchase agreements, which represent Chubb's agreement to sell securities and repurchase them at a future date for a predetermined price. We use trust funds in certain large reinsurance transactions where the trust funds are set up for the benefit of the ceding companies and generally take the place of letter of credit (LOC) requirements. We have investments in segregated portfolios primarily to provide collateral or guarantees for LOC and derivative transactions. Included in restricted assets at September 30, 2023, and December 31, 2022, are investments, primarily fixed maturities, totaling $17,505 million and $15,721 million, respectively, and cash of $192 million and $115 million, respectively.

The following table presents the components of restricted assets:

	September 30		December 31
(in millions of U.S. dollars)	2023		2022
Trust funds	$	8,462	$	8,120
Deposits with U.S. regulatory authorities	2,290		2,345
Deposits with non-U.S. regulatory authorities	3,366		2,959
Assets pledged under repurchase agreements	2,753		1,527
Other pledged assets	826		885
Total	$	17,697	$	15,836

g) Variable interest entities (VIEs)

Consolidated VIEs

Certain subsidiaries of Huatai Group are the investment manager of, and maintain investments in, sponsored investment products that are considered Variable Interest entities (VIEs). Refer to Note 1 for further information on our consolidation criteria. The assets of these VIEs are not available to our creditors, and the investors in these VIEs have no recourse to Chubb in excess of the assets contained within the VIEs. Our economic exposures are limited to our investments based on our ownership interest in these VIEs. Our total exposure to these sponsored investment products represents the value of our economic ownership interest.

The following table presents the balances related to these sponsored investment products accounted for as VIEs that were recorded on our Consolidated balance sheets, including our net interest in these sponsored investment products:

	September 30
(in millions of U.S. dollars)	2023
Short-term investments	$	466
Equity securities	986
Private equities	21
Other investments	3,937
Total investments of consolidated VIEs	5,410
Cash	164
Other assets	22
Total assets of consolidated VIEs	$	5,596
Other liabilities	32
Repurchase agreements	837
Total liabilities of consolidated VIEs	869
Noncontrolling interests	3,176
Chubb's net interest in consolidated VIEs	$	1,551

The carrying value of assets and liabilities on the Consolidated balance sheets relating to nonconsolidated sponsored investment products where we are not the primary beneficiary is immaterial.

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Fair value measurements

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Fair value measurements

Fair value measurements

a) Fair value hierarchy

Fair value of financial assets and financial liabilities is estimated based on the framework established in the fair value accounting guidance. The guidance defines fair value as the price to sell an asset or transfer a liability (an exit price) in an orderly transaction between market participants and establishes a three-level valuation hierarchy based on the reliability of the inputs. The fair value hierarchy gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data.

The three levels of the hierarchy are as follows:

•Level 1 – Unadjusted quoted prices for identical assets or liabilities in active markets;

•Level 2 – Includes, among other items, inputs other than quoted prices that are observable for the asset or liability such as

interest rates and yield curves, quoted prices for similar assets and liabilities in active markets, and quoted prices for identical or similar assets and liabilities in markets that are not active; and

•Level 3 – Inputs that are unobservable and reflect management’s judgments about assumptions that market participants

would use in pricing an asset or liability.

We categorize financial instruments within the valuation hierarchy at the balance sheet date based upon the lowest level of inputs that are significant to the fair value measurement.

We use pricing services to obtain fair value measurements for the majority of our investment securities. Based on management’s understanding of the methodologies used, these pricing services only produce an estimate of fair value if there is observable market information that would allow them to make a fair value estimate. Based on our understanding of the market inputs used by the pricing services, all applicable investments have been valued in accordance with GAAP. We do not adjust prices obtained from pricing services. The following is a description of the valuation techniques and inputs used to determine fair values for financial instruments carried at fair value, as well as the general classification of such financial instruments pursuant to the valuation hierarchy.

Fixed maturities

We use pricing services to estimate fair value measurements for the majority of our fixed maturities. The pricing services use market quotations for fixed maturities that have quoted prices in active markets; such securities are classified within Level 1. For fixed maturities other than U.S. Treasury securities that generally do not trade on a daily basis, the pricing services prepare estimates of fair value measurements using their pricing applications or pricing models, which include available relevant market information, benchmark curves, benchmarking of like securities, sector groupings, and matrix pricing. Additional valuation factors that can be taken into account are nominal spreads, dollar basis, and liquidity adjustments. The pricing services evaluate each asset class based on relevant market and credit information, perceived market movements, and sector news. The market inputs used in the pricing evaluation, listed in the approximate order of priority include: benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, reference data, and industry and economic events. The extent of the use of each input is dependent on the asset class and the market conditions. Given the asset class, the priority of the use of inputs may change, or some market inputs may not be relevant. Additionally, fixed maturities valuation is more subjective when markets are less liquid due to the lack of market based inputs (i.e., stale pricing) and may require the use of models to be priced. The lack of market based inputs may increase the potential that an investment's estimated fair value is not reflective of the price at which an actual transaction would occur. The overwhelming majority of fixed maturities are classified within Level 2 because the most significant inputs used in the pricing techniques are observable. For a small number of fixed maturities, we obtain a single broker quote (typically from a market maker). Due to the disclaimers on the quotes that indicate that the price is indicative only, we include these fair value estimates in Level 3. 

Equity securities

Equity securities with active markets are classified within Level 1 as fair values are based on quoted market prices. For equity securities in markets which are less active, fair values are based on market valuations and are classified within Level 2. Equity securities for which pricing is unobservable are classified within Level 3.

Short-term investments

Short-term investments, which comprise securities due to mature within one year of the date of purchase that are traded in active markets, are classified within Level 1 as fair values are based on quoted market prices. Securities such as commercial paper and discount notes are classified within Level 2 because these securities are typically not actively traded due to their approaching maturity, and as such, their cost approximates fair value. Short-term investments for which pricing is unobservable are classified within Level 3.

Private equities

Fair values for the majority of Private equities including investments in partially-owned investment companies, investment funds, and limited partnerships are based on their respective NAV and are excluded from the fair value hierarchy table below.

Other investments

Certain of our long-duration contracts are supported by assets that do not qualify for separate account reporting under GAAP. These assets comprise mutual funds, classified within Level 1 in the valuation hierarchy on the same basis as other equity securities traded in active markets. Other investments principally include fixed maturities carried at fair value with changes in fair value recorded through the Consolidated statements of operations. These fixed maturities principally relate to the acquired Huatai investment portfolio and are classified within Level 2. Also included are life insurance policies collateralizing investments held in rabbi trusts maintained by Chubb for deferred compensation plans and supplemental retirement plans. These policies are carried at cash surrender value and are classified in the valuation hierarchy within Level 2.

Securities lending collateral

The underlying assets included in Securities lending collateral in the Consolidated balance sheets are fixed maturities which are classified in the valuation hierarchy on the same basis as other fixed maturities. Excluded from the valuation hierarchy is the corresponding liability related to Chubb’s obligation to return the collateral plus interest as it is reported at contract value and not fair value in the Consolidated balance sheets.

Investment derivatives

Actively traded investment derivative instruments, including futures, options, and forward contracts are classified within Level 1 as fair values are based on quoted market prices. The fair value of cross-currency swaps and interest rate swaps is based on market valuations and is classified within Level 2. Investment derivative instruments are recorded in either Other assets or Accounts payable, accrued expenses, and other liabilities in the Consolidated balance sheets.

Derivatives designated as hedging instruments

Certain of our derivatives are cross-currency swaps designated as fair value and net investment hedging instruments. The fair value of cross-currency swaps and interest rate swaps is based on market valuations and is classified within Level 2. Investment derivative instruments are recorded in either Other assets or Accounts payable, accrued expenses, and other liabilities in the Consolidated balance sheets.

Other derivative instruments

We maintain positions in exchange-traded equity futures contracts designed to limit exposure to a severe equity market decline, which would cause an increase in expected claims and, therefore, an increase in market risk benefits (MRB) reserves and our MRB reinsurance business. Our positions in exchange-traded equity futures contracts are classified within Level 1. The fair value of the majority of the remaining positions in other derivative instruments is based on significant observable inputs including equity security and interest rate indices. Accordingly, these are classified within Level 2. Other derivative instruments based on unobservable inputs are classified within Level 3. Other derivative instruments are recorded in either Other assets or Accounts payable, accrued expenses, and other liabilities in the Consolidated balance sheets.

Separate account assets

Separate account assets represent segregated funds where investment risks are borne by the customers, except to the extent of certain guarantees made by Chubb. Separate account assets principally comprise mutual funds classified within Level 1 in the valuation hierarchy on the same basis as other equity securities traded in active markets. Separate account assets also include fixed maturities classified within Level 2 because the most significant inputs used in the pricing techniques are observable. Excluded from the valuation hierarchy are the corresponding liabilities as they are reported at contract value and not fair value in the Consolidated balance sheets.

Financial instruments measured at fair value on a recurring basis, by valuation hierarchy

September 30, 2023	Level 1		Level 2		Level 3		Total
(in millions of U.S. dollars)
Assets:
Fixed maturities available for sale
U.S. Treasury / Agency	$	3,084	$	597	$	—	$	3,681
Non-U.S.	—		32,084		633		32,717
Corporate and asset-backed securities	—		38,286		2,569		40,855
Mortgage-backed securities	—		19,580		25		19,605
Municipal	—		2,908		—		2,908
	3,084		93,455		3,227		99,766
Equity securities	3,310		—		85		3,395
Short-term investments	2,546		2,906		2		5,454
Other investments (1)	569		4,364		—		4,933
Securities lending collateral	—		1,469		—		1,469
Investment derivatives	42		—		—		42
Derivatives designated as hedging instruments	—		48		—		48
Other derivative instruments	53		—		—		53
Separate account assets	5,217		89		—		5,306
Total assets measured at fair value (1)(2)	$	14,821	$	102,331	$	3,314	$	120,466
Liabilities:
Investment derivatives	$	168	$	—	$	—	$	168
Derivatives designated as hedging instruments	—		68		—		68
Other derivative instruments	—		4		—		4
Market risk benefits (3)	—		—		770		770
Total liabilities measured at fair value	$	168	$	72	$	770	$	1,010

(1)Excluded from the table above are policy loans of $603 million, and other investments of $47 million at September 30, 2023, measured using NAV as a practical expedient.

(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $13,362 million at September 30, 2023, measured using NAV as a practical expedient.

(3)Refer to Note 11 for additional information on Market risk benefits.

December 31, 2022	Level 1		Level 2		Level 3		Total
(in millions of U.S. dollars)
Assets:
Fixed maturities available for sale
U.S. Treasury / Agency	$	2,100	$	526	$	—	$	2,626
Non-U.S.	—		25,344		564		25,908
Corporate and asset-backed securities	—		34,506		2,449		36,955
Mortgage-backed securities	—		15,840		11		15,851
Municipal	—		3,880		—		3,880
	2,100		80,096		3,024		85,220
Equity securities	737		—		90		827
Short-term investments	3,108		1,849		3		4,960
Other investments (1)	552		399		—		951
Securities lending collateral	—		1,523		—		1,523
Investment derivative instruments	82		—		—		82
Derivatives designated as hedging instruments	—		17		—		17
Other derivative instruments	33		—		—		33
Separate account assets	5,101		89		—		5,190
Total assets measured at fair value (1)(2)	$	11,713	$	83,973	$	3,117	$	98,803
Liabilities:
Investment derivatives	$	139	$	—	$	—	$	139
Derivatives designated as hedging instruments	—		53		—		53
Market risk benefits (3)	—		—		800		800
Total liabilities measured at fair value	$	139	$	53	$	800	$	992

(1)Excluded from the table above are policy loans of $343 million and other investments of $47 million at December 31, 2022, measured using NAV as a practical expedient.

(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $12,355 million at December 31, 2022, measured using NAV as a practical expedient.

(3)Refer to Note 11 for additional information on Market risk benefits.

Level 3 financial instruments

The following tables present a reconciliation of the beginning and ending balances of financial instruments measured at fair value using significant unobservable inputs (Level 3). Excluded from the following tables is the reconciliation of Market risk benefits, refer to Note 11 for additional information:

Three Months Ended September 30, 2023 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities		Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities
Balance, beginning of period	$	649	$	2,524	$	10	$	86	$	3
Transfers into Level 3	—		—		—		—		—
Transfers out of Level 3	(22)		(10)		—		—		—
Change in Net Unrealized Gains/Losses in OCI	(6)		6		—		—		—
Net Realized Gains/Losses	(2)		(4)		—		—		—
Purchases	46		158		16		4		—
Sales	(17)		(40)		—		(5)		(1)
Settlements	(15)		(65)		(1)		—		—
Balance, end of period	$	633	$	2,569	$	25	$	85	$	2
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(1)	$	(4)	$	—	$	—	$	—
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	(8)	$	4	$	—	$	—	$	—

Three Months Ended September 30, 2022 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities		Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities
Balance, beginning of period	$	549	$	2,261	$	19	$	81	$	9
Transfers into Level 3	—		2		—		—		—
Transfers out of Level 3	—		(4)		—		—		—
Change in Net Unrealized Gains/Losses in OCI	(34)		(16)		—		—		—
Net Realized Gains/Losses	(4)		(9)		—		3		(1)
Purchases	39		164		4		3		1
Sales	(19)		(8)		—		(4)		—
Settlements	(25)		(94)		(4)		—		(6)
Balance, end of period	$	506	$	2,296	$	19	$	83	$	3
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(1)	$	(3)	$	—	$	3	$	(1)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	(35)	$	(19)	$	—	$	—	$	—

Nine Months Ended September 30, 2023 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities		Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities
Balance, beginning of period	$	564	$	2,449	$	11	$	90	$	3
Transfers into Level 3	21		3		—		—		—
Transfers out of Level 3	(22)		(23)		—		—		—
Change in Net Unrealized Gains/Losses in OCI	5		8		—		—		(1)
Net Realized Gains/Losses	(3)		(7)		—		(6)		—
Purchases	151		481		16		15		3
Sales	(52)		(70)		—		(14)		(3)
Settlements	(31)		(272)		(2)		—		—
Balance, end of period	$	633	$	2,569	$	25	$	85	$	2
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(1)	$	(6)	$	—	$	(6)	$	—
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	1	$	2	$	—	$	—	$	—

Nine Months Ended September 30, 2022 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities		Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities
Balance, beginning of period	$	633	$	2,049	$	26	$	77	$	7
Transfers into Level 3	23		41		—		1		—
Transfers out of Level 3	(23)		(97)		(5)		—		—
Change in Net Unrealized Gains/Losses in OCI	(88)		(68)		—		—		—
Net Realized Gains/Losses	(6)		(9)		—		7		(1)
Purchases	108		658		4		6		8
Sales	(44)		(59)		—		(8)		—
Settlements	(97)		(219)		(6)		—		(11)
Balance, end of period	$	506	$	2,296	$	19	$	83	$	3
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(3)	$	(4)	$	—	$	6	$	(1)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	(89)	$	(71)	$	—	$	—	$	—

b) Financial instruments disclosed, but not measured, at fair value

Chubb uses various financial instruments in the normal course of its business. Our insurance contracts are excluded from fair value of financial instruments accounting guidance, and therefore, are not included in the amounts discussed below.

The carrying values of cash, other assets, other liabilities, and other financial instruments not included below approximated their fair values. Refer to the 2022 Form 10-K for information on the fair value methods and assumptions for investments in partially-owned insurance companies, short-term and long-term debt, repurchase agreements, and trust-preferred securities.

The following tables present fair value, by valuation hierarchy, and carrying value of the financial instruments not measured at fair value:

September 30, 2023	Fair Value								Net Carrying Value
(in millions of U.S. dollars)	Level 1		Level 2		Level 3		Total
Assets:
Private debt held-for-investment	$	—	$	—	$	2,389	$	2,389	$	2,401
Total assets	$	—	$	—	$	2,389	$	2,389	$	2,401
Liabilities:
Repurchase agreements	$	—	$	2,617	$	—	$	2,617	$	2,617
Short-term debt	—		688		—		688		700
Long-term debt	—		11,627		—		11,627		13,736
Trust preferred securities	—		362		—		362		308
Total liabilities	$	—	$	15,294	$	—	$	15,294	$	17,361

Private debt held-for-investment is related to Huatai and its consolidation. The fair value of Private debt held-for-investment is derived using a discounted cash flow approach, which includes an evaluation of forecasted contractual cash flows and yield curve information, among other loan characteristics and assumptions. These assumptions are derived from internal and third party sources. Since the valuation is derived from model-based techniques, Private debt held-for-investment is classified within Level 3 of the valuation hierarchy.

December 31, 2022	Fair Value								Net Carrying Value
(in millions of U.S. dollars)	Level 1		Level 2		Level 3		Total
Assets:
Fixed maturities held to maturity
U.S. Treasury / Agency	$	1,299	$	71	$	—	$	1,370	$	1,417
Non-U.S.	—		1,054		—		1,054		1,136
Corporate and asset-backed securities	—		1,580		—		1,580		1,705
Mortgage-backed securities	—		1,351		—		1,351		1,455
Municipal	—		3,084		—		3,084		3,135
Total assets	$	1,299	$	7,140	$	—	$	8,439	$	8,848
Liabilities:
Repurchase agreements	$	—	$	1,419	$	—	$	1,419	$	1,419
Short-term debt	—		473		—		473		475
Long-term debt	—		12,495		—		12,495		14,402
Trust preferred securities	—		383		—		383		308
Total liabilities	$	—	$	14,770	$	—	$	14,770	$	16,604

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Reinsurance

9 Months Ended

Sep. 30, 2023

Reinsurance Disclosures [Abstract]

Reinsurance [Text Block]

Reinsurance

Reinsurance recoverable on ceded reinsurance

	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)	Net Reinsurance Recoverable (1)		Valuation allowance		Net Reinsurance Recoverable (1)		Valuation allowance
Reinsurance recoverable on unpaid losses and loss expenses	$	17,808	$	318	$	17,086	$	289
Reinsurance recoverable on paid losses and loss expenses	1,942		52		1,773		62
Reinsurance recoverable on losses and loss expenses	$	19,750	$	370	$	18,859	$	351
Reinsurance recoverable on policy benefits	$	315	$	1	$	302	$	4

(1)Net of valuation allowance for uncollectible reinsurance.

The increase in reinsurance recoverable on losses and loss expenses was primarily due to the consolidation of Huatai and unfavorable prior period development on ceded reserves.

The following table presents a roll-forward of valuation allowance for uncollectible reinsurance related to Reinsurance recoverable on loss and loss expenses:

	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023		2022
Valuation allowance for uncollectible reinsurance - beginning of period	$	351	$	329
Provision for uncollectible reinsurance	27		30
Write-offs charged against the valuation allowance	(8)		(4)
Foreign exchange revaluation	—		(3)
Valuation allowance for uncollectible reinsurance - end of period	$	370	$	352

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Deferred acquisition costs

9 Months Ended

Sep. 30, 2023

Deferred Policy Acquisition Costs Disclosures [Abstract]

Deferred Policy Acquisition Costs

Deferred acquisition costs

Deferred acquisition costs comprise capitalized costs on short-duration contracts of $3,283 million and $2,809 million and long-duration contracts of $3,573 million and $2,979 million at September 30, 2023, and September 30, 2022, respectively. The assumptions used to amortize DAC were consistent with the assumptions used to estimate the liability for future policy benefits for nonparticipating traditional and limited-payment contracts.

The following tables present a roll-forward of deferred acquisitions costs on long-duration contracts included in the Life Insurance segment:

	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Term Life		Universal Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	320	$	776	$	395	$	902	$	121	$	2,514
Capitalizations	118		85		102		392		25		722
Amortization expense	(74)		(57)		(16)		(100)		(15)		(262)
Other (including foreign exchange)	8		(20)		7		(13)		(4)		(22)
Balance - end of period	$	372	$	784	$	488	$	1,181	$	127	$	2,952
Overseas General Insurance segment excluded from table											621
Total deferred acquisition costs on long-duration contracts											$	3,573

	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Term Life		Universal Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	246	$	771	$	334	$	745	$	108	$	2,204
Capitalizations	111		95		46		166		39		457
Amortization expense	(56)		(55)		(14)		(72)		(16)		(213)
Other (including foreign exchange)	(2)		(50)		(16)		(20)		(14)		(102)
Balance - end of period	$	299	$	761	$	350	$	819	$	117	$	2,346
Overseas General Insurance segment excluded from table											633
Total deferred acquisition costs on long-duration contracts											$	2,979

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Goodwill and Value of business acquired

9 Months Ended

Sep. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets Disclosure [Text Block]

Goodwill, Value of business acquired, and Other intangible assets

Goodwill

The following table presents a roll-forward of Goodwill by segment:

(in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Chubb Consolidated
Balance at December 31, 2022	$	6,945	$	2,230	$	134	$	4,605	$	371	$	1,943	$	16,228
Consolidation of Huatai Group (1)	—		—		—		562		—		2,832		3,394
Foreign exchange revaluation and other	—		—		—		44		—		(112)		(68)
Balance at September 30, 2023	$	6,945	$	2,230	$	134	$	5,211	$	371	$	4,663	$	19,554

(1)Includes $1.0 billion attributable to noncontrolling interests.

Value of business acquired

Value of business acquired (VOBA) represents the fair value of the future profits of in-force long duration contracts from businesses acquired, principally Cigna's Asian business, and is amortized in relation to the profit emergence of the underlying contracts. The VOBA calculation is based on many factors including mortality, morbidity, persistency, investment yields, expenses, and the discount rate, with the discount rate being the most significant factor.

The following table presents a roll-forward of VOBA:

	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023
Balance, beginning of period	$	3,702
Consolidation of Huatai Group	309
Amortization of VOBA (1)	(235)
Foreign exchange revaluation and other	(101)
Balance, end of period	$	3,675

(1)Recognized in Policy acquisition costs in the Consolidated statements of operations.

The following table presents, as of September 30, 2023, the expected estimated pre-tax amortization expense related to VOBA at current foreign currency rates, for the fourth quarter of 2023 and for the next five years:

For the Years Ending December 31 (in millions of U.S. dollars)	Total amortization of VOBA
Fourth quarter of 2023	$	67
2024	270
2025	230
2026	202
2027	181
2028	165
Total	$	1,115

Other intangible assets

Other intangible assets that are subject to amortization principally relate to agency distribution relationships, renewal rights, and patents. Other intangible assets that are not subject to amortization principally relate to trademarks. For other intangible assets related to the consolidation of Huatai, refer to Note 2.

(in millions of U.S. dollars)	September 30 2023		December 31 2022
Subject to amortization	$	3,350	$	2,459
Not subject to amortization	3,494		2,982
Total	$	6,844	$	5,441

The following table presents, as of September 30, 2023, the expected pre-tax amortization expense of purchased intangibles, at current foreign currency exchange rates, for the fourth quarter of 2023 and for the next five years:

For the Years Ending December 31 (in millions of U.S. dollars)	Total amortization of purchased intangibles		Amortization of Huatai UPR intangible asset (1)		Amortization of Huatai land use rights (2)		Total amortization
Fourth quarter of 2023	$	84	$	16	$	3	$	103
2024	312		30		12		354
2025	286		16		12		314
2026	269		7		12		288
2027	249		3		13		265
2028	240		—		13		253
Total	$	1,440	$	72	$	65	$	1,577

(1)Recognized in Policy acquisition costs in the Consolidated statements of operations.

(2)Recognized in Other (income) expense in the Consolidated statements of operations.

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Unpaid losses and loss expenses

9 Months Ended

Sep. 30, 2023

Liability for Claims and Claims Adjustment Expense [Abstract]

Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block]

Unpaid losses and loss expenses

The following table presents a reconciliation of beginning and ending Unpaid losses and loss expenses:

	Nine Months Ended
	September 30
	2023		2022
(in millions of U.S. dollars)			As Adjusted
Gross unpaid losses and loss expenses – beginning of period	$	75,747	$	72,330
Reinsurance recoverable on unpaid losses – beginning of period (1)	(17,086)		(16,132)
Net unpaid losses and loss expenses – beginning of period	58,661		56,198
Net losses and loss expenses incurred in respect of losses occurring in:
Current year	18,604		17,755
Prior years (2)	(667)		(922)
Total	17,937		16,833
Net losses and loss expenses paid in respect of losses occurring in:
Current year	4,853		4,511
Prior years	10,158		9,217
Total	15,011		13,728
Consolidation of Huatai Group	405		—
Foreign currency revaluation and other	(95)		(1,280)
Net unpaid losses and loss expenses – end of period	61,897		58,023
Reinsurance recoverable on unpaid losses (1)	17,808		17,313
Gross unpaid losses and loss expenses – end of period	$	79,705	$	75,336

(1)    Net of valuation allowance for uncollectible reinsurance.

(2)    Relates to prior period loss reserve development only and excludes prior period development related to reinstatement premiums, expense adjustments, earned premiums, and development on international A&H lines totaling $71 million and $213 million for the nine months ended September 30, 2023 and 2022, respectively.

Gross and net unpaid losses and loss expenses increased $4.0 billion and $3.2 billion for the nine months ended September 30, 2023, respectively, principally reflecting underlying exposure growth and the consolidation of Huatai. The increase in net unpaid losses also reflected seasonality in our crop insurance business. This increase was partially offset by favorable prior period development and by large payments related to the Boy Scouts of America.

Prior Period Development

Prior period development (PPD) arises from changes to loss estimates recognized in the current year that relate to loss events that occurred in previous calendar years and excludes the effect of losses from the development of earned premium from previous accident years. Long-tail lines include lines such as workers' compensation, general liability, and financial lines; while short-tail lines include lines such as most property lines, energy, personal accident, and agriculture.

The following table summarizes (favorable) and adverse PPD by segment:

	Three Months Ended September 30						Nine Months Ended September 30
(in millions of U.S. dollars)	Long-tail		Short-tail		Total		Long-tail		Short-tail		Total
2023
North America Commercial P&C Insurance	$	107	$	(191)	$	(84)	$	(23)	$	(279)	$	(302)
North America Personal P&C Insurance	—		(119)		(119)		—		(135)		(135)
North America Agricultural Insurance	—		(9)		(9)		—		(12)		(12)
Overseas General Insurance	(52)		3		(49)		(52)		(201)		(253)
Global Reinsurance	—		—		—		7		(32)		(25)
Corporate	61		—		61		131		—		131
Total	$	116	$	(316)	$	(200)	$	63	$	(659)	$	(596)
2022
North America Commercial P&C Insurance	$	(29)	$	(137)	$	(166)	$	(315)	$	(246)	$	(561)
North America Personal P&C Insurance	—		(133)		(133)		—		(187)		(187)
North America Agricultural Insurance	—		9		9		—		(17)		(17)
Overseas General Insurance	(5)		—		(5)		(5)		(233)		(238)
Global Reinsurance	—		—		—		(7)		29		22
Corporate	73		—		73		272		—		272
Total	$	39	$	(261)	$	(222)	$	(55)	$	(654)	$	(709)

Significant prior period movements by segment, principally driven by reserve reviews completed during each respective period, are discussed in more detail below. The remaining net development for long-tail lines and short-tail business for each segment and Corporate comprises numerous favorable and adverse movements across a number of lines and accident years, none of which is significant individually or in the aggregate.

North America Commercial P&C Insurance. Net favorable development for the three months ended September 30, 2023 included $71 million in workers' compensation lines, mainly due to lower than expected loss experience, and $188 million in commercial property and marine lines, mainly due to net lower than expected development impacting the most recent accident years. The favorable development was partially offset by adverse development of $222 million in commercial excess and umbrella lines, driven by higher than expected loss development, principally related to automobile exposures.

Net favorable development for the nine months ended September 30, 2023 included $379 million in workers' compensation lines, $113 million in commercial property and marine lines, and $101 million in surety, all mainly driven by lower than expected development. These favorable movements were partially offset by adverse development of $227 million in commercial excess and umbrella lines and $125 million in commercial auto liability, both driven by higher than expected loss experience.

Net favorable development for the three months ended September 30, 2022 included $164 million from lower than expected loss experience in workers’ compensation lines and $66 million, net of premium adjustments, from lower claims activity in large multi-line loss sensitive accounts. The favorable development was partially offset by net adverse development of $58 million from higher than expected claims severity in commercial auto liability, and $71 million in commercial umbrella/excess portfolios. Net favorable development on our short-tail businesses primarily included $132 million in property and marine portfolios, where paid and reported loss activity for the most recent accident years was lower than expected. Net favorable development for the nine months ended September 30, 2022 also included favorable development in workers’ compensation lines due to updates to loss development factors and our annual assessment of multi-claimant events, including industrial accidents.

North America Personal P&C Insurance. Net favorable development for the three and nine months ended September 30, 2023 included $263 million and $244 million, respectively, in homeowners and valuables lines, mainly due to lower than expected loss experience in accident year 2022. The favorable development was partially offset by net adverse development of $145 million in the three months ended September 30, 2023 in personal excess liability due to adverse development on reported losses.

Net favorable development for the three and nine months ended September 30, 2022 included favorable development in the homeowners and valuables lines of business, driven by lower than expected claims reserve development.

Overseas General Insurance. Net favorable development for the three months ended September 30, 2023 included favorable loss emergence in financial lines of $77 million primarily in accident years 2019 and prior of partially offset by net adverse development of $51 million in political risks. Net favorable development for the nine months ended September 30, 2023, also included net favorable development of $147 million in property and marine lines, and $45 million in A&H lines.

Net favorable development for the three months ended September 30, 2022, included lower than expected paid and reported loss activity of $82 million in casualty lines, including primary and excess lines in Continental Europe, the U.K., and Asia Pacific, and $34 million in environmental lines. The favorable development was partially offset by net adverse development of $114 million in financial lines, including Directors and Officers (D&O) due to a combination of higher than expected development on specific claims and increased expected future development in the U.K., Continental Europe, Asia Pacific, and London wholesale business. Net favorable development for the nine months ended September 30, 2022, also included net favorable development of $75 million in A&H lines, $67 million in property lines, and $53 million in personal lines.

Corporate. Net adverse development for the three months ended September 30, 2023 and 2022, included adverse development for environmental liabilities. Net adverse development for the nine months ended September 30, 2023 and 2022 also included adverse development for molestation claims of $49 million and $155 million, respectively.

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Future policy benefits

9 Months Ended

Sep. 30, 2023

Liability for Future Policy Benefits Activity [Abstract]

Liability for future policy benefits

Future policy benefits

The following tables present a roll-forward of the liability for future policy benefits included in the Life Insurance segment:

Present Value of Expected Net Premiums	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	818	$	2,301	$	9,863	$	42	$	13,024
Beginning balance at original discount rate	879		2,354		10,409		43		13,685
Effect of changes in cash flow assumptions	35		40		(811)		2		(734)
Effect of actual variances from expected experience	(13)		6		(120)		—		(127)
Adjusted beginning of period balance	901		2,400		9,478		45		12,824
Consolidation of Huatai Group	3		1,690		145		12		1,850
Issuances	90		274		1,066		5		1,435
Interest accrual	45		62		421		1		529
Net premiums collected (1)	(127)		(375)		(998)		(15)		(1,515)
Other (including foreign exchange)	(9)		(56)		(212)		18		(259)
Ending balance at original discount rate	903		3,995		9,900		66		14,864
Effect of changes in discount rate assumptions	(69)		(62)		(497)		(1)		(629)
Balance – end of period	$	834	$	3,933	$	9,403	$	65	$	14,235

(1)Net premiums collected represent the portion of gross premiums collected from policyholders that is used to fund expected benefit.

Present Value of Expected Future Policy Benefits	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	1,427	$	6,048	$	14,206	$	239	$	21,920
Beginning balance at original discount rate	1,555		6,225		15,022		250		23,052
Effect of changes in cash flow assumptions	31		44		(848)		3		(770)
Effect of actual variances from expected experience	(10)		12		(114)		—		(112)
Adjusted beginning of period balance	1,576		6,281		14,060		253		22,170
Consolidation of Huatai Group	17		3,659		163		298		4,137
Issuances	90		276		1,065		5		1,436
Interest accrual	54		176		514		6		750
Benefits payments	(119)		(212)		(1,065)		(8)		(1,404)
Other (including foreign exchange)	92		22		(628)		178		(336)
Ending balance at original discount rate	1,710		10,202		14,109		732		26,753
Effect of changes in discount rate assumptions	(152)		(274)		(790)		(11)		(1,227)
Balance – end of period	$	1,558	$	9,928	$	13,319	$	721	$	25,526

	September 30, 2023
Liability for Future Policy Benefits	Life Insurance								Overseas General Insurance		Chubb Consolidated
(in millions of U.S. dollars, except for years)	Term Life		Whole Life		A&H		Other		A&H		Total
Net liability for future policy benefits	$	724	$	5,995	$	3,916	$	656	$	718	$	12,009
Deferred profit liability	223		707		156		14		—		1,100
Net liability for future policy benefits, per consolidated balance sheet	947		6,702		4,072		670		718		13,109
Less: Reinsurance recoverable on future policy benefits	111		47		103		21		33		315
Net liability for future policy benefits, after reinsurance recoverable	$	836	$	6,655	$	3,969	$	649	$	685	$	12,794
Weighted-average duration (years)	10.2		26.5		10.3		15.1		4.9		18.7

Present Value of Expected Net Premiums	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	422	$	1,341	$	2,520	$	30	$	4,313
Beginning balance at original discount rate	397		1,243		2,323		28		3,991
Effect of changes in cash flow assumptions	—		(3)		(29)		—		(32)
Effect of actuarial variances from expected experience	(31)		12		(120)		—		(139)
Adjusted beginning of period balance	366		1,252		2,174		28		3,820
Acquisition of Cigna	445		1,078		8,191		23		9,737
Issuances	95		155		348		3		601
Interest accrual	45		37		184		1		267
Net premiums collected (1)	(93)		(156)		(445)		(9)		(703)
Other (including foreign exchange)	(46)		(102)		(487)		(4)		(639)
Ending balance at original discount rate	812		2,264		9,965		42		13,083
Effect of changes in discount rate assumptions	(59)		(95)		(531)		(1)		(686)
Balance – end of period	$	753	$	2,169	$	9,434	$	41	$	12,397

(1)Net premiums collected represent the portion of gross premiums collected from policyholders that is used to fund expected benefit.

Present Value of Expected Future Policy Benefits	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	921	$	4,785	$	4,939	$	130	$	10,775
Beginning balance at original discount rate	858		3,833		4,589		122		9,402
Effect of changes in cash flow assumptions	(5)		(3)		(41)		11		(38)
Effect of actuarial variances from expected experience	(32)		14		(126)		—		(144)
Adjusted beginning of period balance	821		3,844		4,422		133		9,220
Acquisition of Cigna	668		2,267		10,542		106		13,583
Issuances	100		155		348		3		606
Interest accrual	52		123		242		3		420
Benefits payments	(82)		(151)		(469)		(2)		(704)
Other (including foreign exchange)	(112)		(207)		(651)		(102)		(1,072)
Ending balance at original discount rate	1,447		6,031		14,434		141		22,053
Effect of changes in discount rate assumptions	(126)		(308)		(790)		(16)		(1,240)
Balance – end of period	$	1,321	$	5,723	$	13,644	$	125	$	20,813

	September 30, 2022
Liability for Future Policy Benefits	Life Insurance								Overseas General Insurance		Chubb Consolidated
(in millions of U.S. dollars, except for years)	Term Life		Whole Life		A&H		Other		A&H		Total
Net liability for future policy benefits	$	568	$	3,554	$	4,210	$	84	$	735	$	9,151
Deferred profit liability	172		450		125		8		—		755
Net liability for future policy benefits, per consolidated balance sheet	740		4,004		4,335		92		735		9,906
Less: Reinsurance recoverable on future policy benefits	111		56		107		—		38		312
Net liability for future policy benefits, after reinsurance recoverable	$	629	$	3,948	$	4,228	$	92	$	697	$	9,594
Weighted-average duration (years)	9.0		24.7		11.0		13.5		5.1		16.2

The following table presents the amount of undiscounted expected gross premiums and expected future policy benefit payments included in the Life Insurance segment:

	September 30		September 30
(in millions of U.S. dollars)	2023		2022
Term Life
Undiscounted expected future benefit payments	$	2,492	$	2,189
Undiscounted expected future gross premiums	$	2,884	$	2,503
Discounted expected future benefit payments	$	1,558	$	1,321
Discounted expected future gross premiums	$	1,910	$	1,682
Whole Life
Undiscounted expected future benefit payments	$	23,457	$	15,631
Undiscounted expected future gross premiums	$	9,478	$	6,654
Discounted expected future benefit payments	$	9,928	$	5,723
Discounted expected future gross premiums	$	7,654	$	5,173
A&H
Undiscounted expected future benefit payments	$	23,168	$	23,873
Undiscounted expected future gross premiums	$	34,055	$	34,659
Discounted expected future benefit payments	$	13,319	$	13,644
Discounted expected future gross premiums	$	20,604	$	20,193
Other
Undiscounted expected future benefit payments	$	977	$	265
Undiscounted expected future gross premiums	$	103	$	102
Discounted expected future benefit payments	$	721	$	125
Discounted expected future gross premiums	$	92	$	92

The following table presents the amount of revenue and interest recognized in the statement of operations:

	Gross Premiums or Assessments				Interest Accretion
	Nine Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Life Insurance
Term Life	$	511	$	361	$	9	$	7
Whole Life	858		411		114		86
A&H	2,171		1,226		93		58
Other	54		71		5		2
Overseas General Insurance
A&H	1,175		1,075		—		—
Total	$	4,769	$	3,144	$	221	$	153

The following table presents the weighted-average interest rates:

	Interest Accretion Rate				Current Discount Rate
	September 30				September 30
	2023		2022		2023		2022
Life Insurance
Term Life	2.9	%	2.6	%	6.0	%	6.1	%
Whole Life	3.2	%	3.9	%	4.7	%	5.5	%
A&H	3.7	%	3.6	%	6.7	%	6.1	%
Other	2.6	%	3.7	%	4.3	%	6.2	%

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Policyholders' account balances

9 Months Ended

Sep. 30, 2023

Policyholder Account Balance [Abstract]

Liability for policyholders' account balance

Policyholders' account balances

The following tables present a roll-forward of policyholders' account balances:

	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Universal Life		Other		Total
Balance – beginning of period	$	1,719	$	1,421	$	3,140
Consolidation of Huatai Group	602		3,412		4,014
Premiums received	275		228		503
Policy charges (1)	(135)		(8)		(143)
Surrenders and withdrawals	(69)		(113)		(182)
Benefit payments	(6)		(81)		(87)
Interest credited	39		43		82
Other (including foreign exchange)	(42)		(107)		(149)
Balance, end of period	$	2,383	$	4,795	$	7,178

	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Universal Life		Other		Total
Balance – beginning of period	$	1,612	$	1,154	$	2,766
Acquisition of Cigna	10		345		355
Premiums received	292		55		347
Policy charges (1)	(141)		(8)		(149)
Surrenders and withdrawals	(55)		(39)		(94)
Benefit payments	(3)		(15)		(18)
Interest credited	30		25		55
Other (including foreign exchange)	(69)		(185)		(254)
Balance, end of period	$	1,676	$	1,332	$	3,008

(1)Contracts included in the policyholder account balances are generally charged a premium and/or monthly assessments on the basis of the account balance.

	September 30
	2023						2022
(in millions of U.S. dollars, except for percentages)	Universal Life			Other			Universal Life			Other
Weighted-average crediting rate	3.8		%	2.1		%	3.7		%	2.6		%
Net amount at risk (1)	$	10,493		$	1,675		$	10,116		$	1,503
Cash Surrender Value	$	1,596		$	3,655		$	934		$	1,280

(1)For those guarantees of benefits that are payable in the event of death, the net amount at risk is defined as the current guaranteed minimum death benefit in excess of the current account balance at the balance sheet date.

The following tables present the balance of account values by range of guaranteed minimum crediting rates and the related range of difference, in basis points, between rates being credited to policyholders and the respective guaranteed minimum:

Universal Life

	September 30, 2023
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	3	$	—	$	56	$	563	$	622
2.01% – 4.00%	472		377		558		333		1,740
Greater than 4.00%	21		—		—		—		21
Total	$	496	$	377	$	614	$	896	$	2,383

	September 30, 2022
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	3	$	—	$	59	$	505	$	567
2.01% – 4.00%	456		394		228		—		1,078
Greater than 4.00%	31		—		—		—		31
Total	$	490	$	394	$	287	$	505	$	1,676

Other policyholders' account balances

	September 30, 2023
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	1,328	$	—	$	1,719	$	799	$	3,846
2.01% – 4.00%	112		487		27		—		626
Greater than 4.00%	323		—		—		—		323
Total	$	1,763	$	487	$	1,746	$	799	$	4,795

	September 30, 2022
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	411	$	—	$	191	$	424	$	1,026
2.01% – 4.00%	—		—		—		—		—
Greater than 4.00%	306		—		—		—		306
Total	$	717	$	—	$	191	$	424	$	1,332

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Market risk benefits

9 Months Ended

Sep. 30, 2023

Market Risk Benefit [Abstract]

Market risk benefits

Market risk benefits

Our reinsurance programs covering variable annuity guarantees, comprising guaranteed living benefits (GLB) and guaranteed minimum death benefits (GMDB), meet the definition of Market risk benefits (MRB). The following table presents a roll-forward of MRB:

	Nine Months Ended September 30
(in millions of U.S. dollars)	2023		2022
Balance – beginning of period	$	800	$	812
Balance, beginning of period, before effect of changes in the instrument-specific credit risk	776		755
Interest rate changes	(117)		(561)
Effect of changes in equity markets	(69)		633
Effect of changes in volatilities	51		14
Effect of changes in future expected policyholder behavior	89		40
Effect of timing and all other	19		(29)
Balance, end of period, before effect of changes in the instrument-specific credit risk	$	749	$	852
Effect of changes in the instrument-specific credit risk	21		9
Balance – end of period	$	770	$	861
Weighted-average age of policyholders (years)	73		73
Net amount at risk	$	2,138	$	2,885

Excluded from the table above are MRB gains (losses) of $(181) million and $186 million for the nine months ended September 30, 2023 and 2022, respectively, reported in the Consolidated statements of operations, relating to the market risk benefits' economic hedge and other net cash flows. There is no reinsurance recoverable associated with our liability for MRB.

In the third quarter of 2023, we completed a review of policyholder behavior related to annuitizations, partial withdrawals, lapses, and mortality for our variable annuity reinsurance business.

•As annuitization and partial withdrawal experience continued to emerge, we refined our assumptions for an additional year of data. The annuitization assumption updates included treaty-based and age-based behavior, as well as a refresh of our annuitization rates which depend on the value of the guarantees. These refinements resulted in a net increase of approximately $92 million to the MRB fair value, recognized as a Market risk benefits loss.

•We also refined our lapse and mortality assumptions based on additional emerging experience. The changes had an insignificant impact on the MRB fair value.

For MRB, Chubb estimates fair value using an internal valuation model which includes a number of factors including interest rates, equity markets, credit risk, current account value, market volatility, expected annuitization rates and other policyholder behavior, and changes in policyholder mortality. All reinsurance treaties contain claim limits, which are also factored into the valuation model.

	Valuation Technique	Significant Unobservable Inputs	September 30, 2023			September 30, 2022
			Ranges	Weighted Average(1)		Ranges	Weighted Average(1)
MRB (1)	Actuarial model	Lapse rate	0.5% – 30%	4.0	%	0.5% – 30.4%	3.8	%
		Annuitization rate	0% – 100%	4.8	%	0% – 100%	4.6	%

(1)The weighted-average lapse and annuitization rates are determined by weighting each treaty's rates by the MRB contract's fair value.

The most significant policyholder behavior assumptions include lapse rates for MRBs, and GLB annuitization rates. Assumptions regarding lapse rates and GLB annuitization rates differ by treaty, but the underlying methodologies to determine rates applied to each treaty are comparable.

A lapse rate is the percentage of in-force policies surrendered in a given calendar year. All else equal, as lapse rates increase, ultimate claim payments will decrease. In general, the base lapse function assumes low lapse rates during the surrender charge period, followed by a "spike" lapse rate in the year immediately following the surrender charge period, and then reverting to an ultimate lapse rate, typically over a 2-year period. This base rate is adjusted downward for policies with more valuable guarantees (policies with guaranteed values far in excess of their account values). Partial withdrawals and the impact of older policyholders with tax-qualified contracts (due to required minimum distributions) are also reflected in our modeling.

The GLB annuitization rate is the percentage of policies for which the policyholder will elect to annuitize using the guaranteed benefit provided under the GLB. All else equal, as GLB annuitization rates increase, ultimate claim payments will increase, subject to treaty claim limits. All GLB reinsurance treaties include claim limits to protect Chubb in the event that actual annuitization behavior is significantly higher than expected. In general, Chubb assumes that GLB annuitization rates will be higher for policies with more valuable guarantees (policies with guaranteed values far in excess of their account values). Chubb also assumes that GLB annuitization rates increase as policyholders get older. In addition, it is also assumed that GLB annuitization rates are higher in the first year immediately following the waiting period (the first year the policies are eligible to annuitize using the GLB) in comparison to all subsequent years. Chubb does not yet have fully credible annuitization experience for all clients.

The effect of changes in key market factors on assumed lapse and annuitization rates reflect emerging trends using data available from cedants. For treaties with limited experience, rates are established by blending the experience with data received from other ceding companies. The model and related assumptions are regularly re-evaluated by management and enhanced, as appropriate, based upon additional experience obtained related to policyholder behavior and availability of updated information such as market conditions, market participant assumptions, and demographics of in-force annuities.

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Separate accounts

9 Months Ended

Sep. 30, 2023

Separate Accounts Disclosure [Abstract]

Separate Accounts

Separate accounts

Separate account assets represent segregated funds where investment risks are borne by the customers, except to the extent of certain guarantees made by Chubb. The assets that support variable contracts are measured at fair value and are reported as Separate account assets and corresponding liabilities are reported within Separate account liabilities on the Consolidated balance sheets. Policy charges assessed against the policyholders for mortality, administration, and other services are included in Net premiums earned on the Consolidated statements of operations.

The following table presents the aggregate fair value of Separate account assets, by major security type:

	September 30		December 31
(in millions of U.S. dollars)	2023		2022
Cash and cash equivalents	$	88	$	141
Mutual funds	5,129		4,960
Fixed maturities	89		89
Total	$	5,306	$	5,190

The following table presents a roll-forward of separate account liabilities:

	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023		2022
Balance – beginning of period	$	5,190	$	5,560
Acquisition of Cigna	—		301
Premiums and deposits	724		1,147
Policy charges	(103)		(93)
Surrenders and withdrawals	(407)		(304)
Benefit payments	(291)		(289)
Investment performance	382		(978)
Other (including foreign exchange)	(189)		(453)
Balance – end of period	$	5,306	$	4,891
Cash surrender value (1)	$	5,285	$	4,771

(1) Cash surrender value represents the amount of the contract holder's account balances distributable at the balance sheet date less certain surrender charges.

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Commitments, contingencies, and guarantees

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Commitments, contingencies, and guarantees

Commitments, contingencies, and guarantees

a) Derivative instruments

Chubb maintains positions in derivative instruments such as futures, options, swaps, and foreign currency forward contracts for which the primary purposes are to manage duration and foreign currency exposure, yield enhancement, or to obtain an exposure to a particular financial market. Chubb also maintains positions in convertible securities that contain embedded derivatives, and exchange-traded equity futures contracts on equity market indices to limit equity exposure in the MRB book of business. Investment derivative instruments and derivatives designated as hedges for accounting purposes are recorded in either Other assets (OA) or Accounts payable, accrued expenses, and other liabilities (AP); convertible bonds are recorded in Fixed maturities available for sale (FM AFS); and convertible equity securities are recorded in Equity securities (ES) in the Consolidated balance sheets. These are the most numerous and frequent derivative transactions. In addition, Chubb, from time to time, purchases to be announced mortgage-backed securities (TBAs) as part of its investing activities.

As a global company, Chubb entities transact business in multiple currencies. Our policy is to generally match assets, liabilities, and required capital for each individual jurisdiction in local currency, which would include the use of derivatives discussed below. Some of Chubb's derivatives satisfy hedge accounting requirements, as discussed below. We also consider economic hedging for planned cross border transactions.

The following table presents the balance sheet location, fair value of derivative instruments in an asset or (liability) position, and notional value/payment provision of our derivative instruments:

				September 30, 2023						December 31, 2022
	Consolidated Balance Sheet Location	Fair Value				Notional Value/ Payment Provision		Fair Value				Notional Value/ Payment Provision
(in millions of U.S. dollars)		Derivative Asset		Derivative (Liability)				Derivative Asset		Derivative (Liability)
Investment and embedded derivatives not designated as hedging instruments:
Foreign currency forward contracts	OA / (AP)	$	15	$	(147)	$	3,711	$	64	$	(115)	$	4,134
Options/Futures contracts on notes and bonds	OA / (AP)	27		(21)		2,150		18		(24)		1,511
Convertible securities (1)	FM AFS / ES	53		—		61		30		—		37
		$	95	$	(168)	$	5,922	$	112	$	(139)	$	5,682
Other derivative instruments:
Futures contracts on equities (2)	OA / (AP)	$	48	$	—	$	1,119	$	33	$	—	$	939
Other	OA / (AP)	5		(4)		368		—		—		—
		$	53	$	(4)	$	1,487	$	33	$	—	$	939
Derivatives designated as hedging instruments:
Cross-currency swaps - fair value hedges	OA / (AP)	$	48	$	—	$	1,609	$	17	$	—	$	1,595
Cross-currency swaps - net investment hedges	OA / (AP)	—		(68)		1,594		—		(53)		1,604
		$	48	$	(68)	$	3,203	$	17	$	(53)	$	3,199

(1)Includes fair value of embedded derivatives.

(2)Related to MRB book of business.

At September 30, 2023, and December 31, 2022, net derivative liabilities of $97 million and $60 million, respectively, included in the table above were subject to a master netting agreement. The remaining derivatives included in the table above were not subject to a master netting agreement.

b) Hedge accounting

We designate certain derivatives as fair value hedges and net investment hedges for accounting purposes to hedge for foreign currency exposure associated with portions of our euro denominated debt and the net investment in certain foreign subsidiaries, respectively. These derivatives comprise cross-currency swaps, which are agreements under which two counterparties exchange interest payments and principal denominated in different currencies at a future date.

(i) Cross-currency swaps - fair value hedges

In September 2022, Chubb entered into certain cross-currency swaps designated as fair value hedges. The objective of these cross-currency swaps is to hedge the foreign currency risk on €1.5 billion, or approximately $1.6 billion at September 30, 2023, of our euro denominated debt, by converting cash flows back into the U.S. dollar.

These fair value hedges are carried at fair value. The hedges are expected to be highly effective, with gains or losses on the fair value hedges offsetting the foreign currency remeasurement on the hedged euro denominated senior notes within Net realized gains (losses). The remaining change in fair value is recorded in Other comprehensive income (OCI), with an immaterial amount recorded in Interest expense.

The following table presents pre-tax gains (losses) recognized in OCI and reclassified into earnings for fair value hedges:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Gain/(loss) recognized in OCI	$	(17)	$	(94)	$	23	$	(94)
Net realized gain/(loss) reclassified from OCI	(51)		(32)		(20)		(32)
Interest expense reclassified from OCI	(4)		—		(12)		—
OCI gain/(loss) after reclassifications	$	38	$	(62)	$	55	$	(62)

(ii) Cross-currency swaps - net investment hedges

In September 2022, Chubb entered into certain cross-currency swaps designated as net investment hedges. The objective of these cross-currency swaps is to hedge the foreign currency exposure in the net investments of certain foreign subsidiaries by converting cash flows from U.S. dollar to the British pound sterling, Japanese yen, and Swiss franc. The hedged risk is designated as the foreign currency exposure arising between the functional currency of the foreign subsidiary and the functional currency of its parent entity.

These net investment hedges are carried at fair value, with changes in fair value recorded in Cumulative translation adjustments (CTA) within OCI, and an immaterial amount recorded to Interest expense. The mark-to-market adjustments for foreign currency changes will remain until the underlying hedge subsidiary is deconsolidated or if hedge accounting is discontinued.

The following table presents pre-tax gains (losses) recognized in OCI and reclassified into earnings for net investment hedges:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Gain/(loss) recognized in OCI	$	(20)	$	64	$	(8)	$	64
Interest income reclassified from OCI	3		—		10		—
OCI gain/(loss) after reclassifications	$	(23)	$	64	$	(18)	$	64

c) Derivative instruments not designated as hedges

Derivative instruments which are not designated as hedges are carried at fair value with changes in fair value recorded in Net realized gains (losses) or, for futures contracts on equities, Market risk benefits gains (losses) in the Consolidated statements of operations. The following table presents net realized gains (losses) related to derivative instrument activity in the Consolidated statements of operations:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Investment and embedded derivative instruments:
Foreign currency forward contracts	$	(17)	$	(247)	$	(95)	$	(515)
All other futures contracts, options, and equities	29		49		5		285
Convertible securities (1)	(3)		—		(2)		(2)
Total investment and embedded derivative instruments	$	9	$	(198)	$	(92)	$	(232)
Other derivative instruments:
Futures contracts on equities (2)	$	52	$	54	$	(80)	$	240
Other	(7)		(19)		(6)		(9)
Total other derivative instruments	$	45	$	35	$	(86)	$	231
	$	54	$	(163)	$	(178)	$	(1)

(1)Includes embedded derivatives.

(2)Related to MRB book of business.

(i) Foreign currency exposure management

A foreign currency forward contract (forward) is an agreement between participants to exchange specific currencies at a future date. Chubb uses forwards to minimize the effect of fluctuating foreign currencies as discussed above.

(ii) Duration management and market exposure

Futures

Futures contracts give the holder the right and obligation to participate in market movements, determined by the index or underlying security on which the futures contract is based. Settlement is made daily in cash by an amount equal to the change in value of the futures contract times a multiplier that scales the size of the contract. Exchange-traded futures contracts on money market instruments, notes and bonds are used in fixed maturity portfolios to more efficiently manage duration, as substitutes for ownership of the money market instruments, bonds, and notes without significantly increasing the risk in the portfolio. Investments in futures contracts may be made only to the extent that there are assets under management not otherwise committed.

Exchange-traded equity futures contracts are used to limit exposure to a severe equity market decline, which would cause an increase in expected claims and, therefore, an increase in market risk benefit reserves.

Options

An option contract conveys to the holder the right, but not the obligation, to purchase or sell a specified amount or value of an underlying security at a fixed price. Option contracts are used in our investment portfolio as protection against unexpected shifts in interest rates, which would affect the duration of the fixed maturity portfolio. By using options in the portfolio, the overall interest rate sensitivity of the portfolio can be reduced. Option contracts may also be used as an alternative to futures contracts in the synthetic strategy as described above.

The price of an option is influenced by the underlying security, level of interest rates, expected volatility, time to expiration, and supply and demand.

The credit risk associated with the above derivative financial instruments relates to the potential for non-performance by counterparties. Although non-performance is not anticipated, in order to minimize the risk of loss, management monitors the creditworthiness of its counterparties and obtains collateral. The performance of exchange-traded instruments is guaranteed by

the exchange on which they trade. For non-exchange-traded instruments, the counterparties are principally banks which must meet certain criteria according to our investment guidelines.

Other

Included within Other are derivatives intended to reduce potential losses which may arise from certain exposures in our insurance business. The economic benefit provided by these derivatives is similar to purchased reinsurance. For example, Chubb may, from time to time, enter into crop derivative contracts to protect underwriting results in the event of a significant decline in commodity prices.

(iii) Convertible security investments

A convertible security is a debt instrument or preferred stock that can be converted into a predetermined amount of the issuer’s equity. The convertible option is an embedded derivative within the host instruments which are classified in the investment portfolio as either available for sale or as an equity security. Chubb purchases convertible securities for their total return and not specifically for the conversion feature.

(iv) TBA

By acquiring TBAs, we make a commitment to purchase a future issuance of mortgage-backed securities. For the period between purchase of the TBAs and issuance of the underlying security, we account for our position as a derivative in the Consolidated Financial Statements. Chubb purchases TBAs, from time to time, both for their total return and for the flexibility they provide related to our mortgage-backed security strategy.

(v) Futures contracts on equities

Under the MRB program, as the assuming entity, Chubb is obligated to provide coverage until the expiration or maturity of the underlying deferred annuity contracts or the expiry of the reinsurance treaty. We may recognize a loss for changes in fair value due to adverse changes in the capital markets (e.g., declining interest rates and/or declining U.S. and/or international equity markets). To mitigate adverse changes in the capital markets, we maintain positions in exchange-traded equity futures contracts, as noted under section "(ii) Futures" above. These futures increase in fair value when the S&P 500 index decreases (and decrease in fair value when the S&P 500 index increases). The net impact of gains or losses related to changes in fair value of the MRB liability and the exchange-traded equity futures are included in Market risk benefits gains (losses) in the Consolidated statements of operations.

d) Securities lending and secured borrowings

Chubb participates in a securities lending program operated by a third-party banking institution whereby certain assets are loaned to qualified borrowers and from which we earn an incremental return. The securities lending collateral can only be drawn down by Chubb in the event that the institution borrowing the securities is in default under the lending agreement. An indemnification agreement with the lending agent protects us in the event a borrower becomes insolvent or fails to return any of the securities on loan. The collateral is recorded in Securities lending collateral and the liability is recorded in Securities lending payable in the Consolidated balance sheets.

The following table presents the carrying value of collateral held under securities lending agreements by investment category and remaining contractual maturity of the underlying agreements:

	Remaining contractual maturity
	September 30, 2023		December 31, 2022
(in millions of U.S. dollars)	Overnight and Continuous
Collateral held under securities lending agreements:
Cash	$	762	$	820
U.S. Treasury / Agency	81		72
Non-U.S.	555		604
Corporate and asset-backed securities	47		27
Municipal	6		—
Equity securities	18		—
	$	1,469	$	1,523
Gross amount of recognized liability for securities lending payable	$	1,469	$	1,523

At September 30, 2023, and December 31, 2022, our repurchase agreement obligations of $2,617 million and $1,419 million, respectively, were fully collateralized. In contrast to securities lending programs, the use of cash received is not restricted for the repurchase obligations. The fair value of the underlying securities sold remains in Fixed maturities available for sale, and the repurchase agreement obligation is recorded in Repurchase agreements in the Consolidated balance sheets.  

The following table presents the carrying value of collateral pledged under repurchase agreements by investment category and remaining contractual maturity of the underlying agreements:

	Remaining contractual maturity
	September 30, 2023								December 31, 2022
	Up to 30 Days		30-90 Days		Greater than 90 Days		Total		Up to 30 Days		30-90 Days		Total
(in millions of U.S. dollars)
Collateral pledged under repurchase agreements:
Cash	$	—	$	—	$	46	$	46	$	12	$	—	$	12
Non-U.S.	1,138		—		—		$	1,138	—		—		$	—
U.S. Treasury / Agency	—		103		—		103		—		101		101
Mortgage-backed securities	50		507		909		1,466		921		493		1,414
	$	1,188	$	610	$	955	$	2,753	$	933	$	594	$	1,527
Gross amount of recognized liabilities for repurchase agreements							$	2,617					$	1,419
Difference (1)							$	136					$	108

(1)Per the repurchase agreements, the amount of collateral posted is required to exceed the amount of gross liability.

Potential risks exist in our secured borrowing transactions due to market conditions and counterparty exposure. With collateral that we pledge, there is a risk that the collateral may not be returned at the expiration of the agreement. If the counterparty fails to return the collateral, Chubb will have free use of the borrowed funds until our collateral is returned. In addition, we may encounter the risk that Chubb may not be able to renew outstanding borrowings with a new term or with an existing counterparty due to market conditions including a decrease in demand as well as more restrictive terms from banks due to increased regulatory and capital constraints. Should this condition occur, Chubb may seek alternative borrowing sources or reduce borrowings. Additionally, increased margins and collateral requirements due to market conditions would increase our restricted assets as we are required to provide additional collateral to support the transaction.

e) Fixed maturities

At September 30, 2023, and December 31, 2022, commitments to purchase fixed income securities over the next several years were $1,075 million and $770 million, respectively.

f) Private equities

At September 30, 2023, included in Private equities in the Consolidated balance sheet are investments in limited partnerships and partially-owned investment companies with a carrying value of $13.1 billion. In connection with these investments, we have commitments that may require funding of up to $6.3 billion over the next several years. At December 31, 2022, these investments had a carrying value of $12.0 billion with commitments that may have required funding of up to $7.4 billion.

g) Income taxes

At September 30, 2023, $67 million of unrecognized tax benefits remain outstanding. It is reasonably possible that, over the next twelve months, the amount of unrecognized tax benefits may change resulting from the re-evaluation of unrecognized tax benefits arising from examinations by taxing authorities, settlements, and the lapses of statutes of limitations. With few exceptions, Chubb is no longer subject to income tax examinations for years before 2012.

h) Legal proceedings

Our insurance subsidiaries are subject to claims litigation involving disputed interpretations of policy coverages and, in some jurisdictions, direct actions by allegedly-injured persons seeking damages from policyholders. These lawsuits, involving claims on policies issued by our subsidiaries which are typical to the insurance industry in general and in the normal course of business, are considered in our loss and loss expense reserves. In addition to claims litigation, we are subject to lawsuits and

regulatory actions in the normal course of business that do not arise from or directly relate to claims on insurance policies. This category of business litigation typically involves, among other things, allegations of underwriting errors or misconduct, employment claims, regulatory activity, or disputes arising from our business ventures. In the opinion of management, our ultimate liability for these matters could be, but we believe is not likely to be, material to our consolidated financial condition and results of operations.

i) Lease commitments

At September 30, 2023, and December 31, 2022, the right-of-use asset was $549 million and $607 million, respectively, recorded within Other assets, and the lease liability was $577 million and $633 million, respectively, recorded within Accounts payable, accrued expenses, and other liabilities on the Consolidated balance sheets. These leases consist principally of real estate operating leases that are amortized on a straight-line basis over the term of the lease, which expire at various dates.

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Shareholders' equity

9 Months Ended

Sep. 30, 2023

Stockholders' Equity Note [Abstract]

Shareholders' equity

Shareholders’ equity

All of Chubb’s Common Shares are authorized under Swiss corporate law. Though the par value of Common Shares is stated in Swiss francs, Chubb continues to use U.S. dollars as its reporting currency for preparing the Consolidated Financial Statements. Under Swiss corporate law, dividends, including distributions from legal reserves or through a reduction in par value (par value reduction), must be stated in Swiss francs though dividend payments are made by Chubb in U.S. dollars. At September 30, 2023, our Common Shares had a par value of CHF 0.50 per share.

At our May 2023 annual general meeting, our shareholders approved an annual dividend for the following year of up to $3.44 per share, expected to be paid in four quarterly installments of $0.86 per share after the general meeting by way of distribution from capital contribution reserves, transferred to free reserves for payment. The Board of Directors (Board) will determine the record and payment dates at which the annual dividend may be paid until the date of 2024 annual general meeting, and is authorized to abstain from distributing a dividend at its discretion.

At our May 2022 and 2021 annual general meetings, our shareholders approved annual dividends for the following year of up to $3.32 per share and $3.20 per share, respectively, which were paid in four quarterly installments of $0.83 per share and $0.80 per share, respectively, at dates determined by the Board after the annual general meetings by way of a distribution from capital contribution reserves, transferred to free reserves for payment.

The following table presents dividend distributions per Common Share in Swiss francs (CHF) and U.S. dollars (USD):

	Three Months Ended						Nine Months Ended
	September 30						September 30
	2023			2022			2023			2022
	CHF	USD		CHF	USD		CHF	USD		CHF	USD
Total dividend distributions per common share	0.75	$	0.86	0.78	$	0.83	2.29	$	2.55	2.32	$	2.46

Increases in Common Shares in treasury are due to open market repurchases of Common Shares and the surrender of Common Shares to satisfy tax withholding obligations in connection with the vesting of restricted stock and the forfeiture of unvested restricted stock. Decreases in Common Shares in treasury are principally due to grants of restricted stock, exercises of stock options, purchases under the Employee Stock Purchase Plan (ESPP), and share cancellations. At the Chubb Limited Extraordinary General Meeting of Shareholders, held on November 3, 2021, shareholders approved the cancellation of 14,465,400 shares repurchased under our share repurchase program during the first six months of 2021. The capital reduction by cancellation of shares was subject to publication requirements and a two-month waiting period in accordance with Swiss law and became effective on January 17, 2022. At our May 2022 annual general meeting, held on May 19, 2022, our shareholders approved the cancellation of 13,179,100 shares purchased under our share repurchase program during the last six months of 2021. The capital reduction by cancellation of shares was subject to publication requirements and a two-month waiting period in accordance with Swiss law and became effective on August 4, 2022. At our May 2023 annual general meeting, held on May 17, 2023, our shareholders approved the cancellation of 14,925,028 shares purchased under our share repurchase programs during 2022. The capital reduction was subject to publication requirements and became effective in accordance with Swiss law on May 22, 2023. During the nine months ended September 30, 2023, 8,634,600 shares were

repurchased, 14,925,028 shares were canceled, and 2,024,083 net shares were issued under employee share-based compensation plans. At September 30, 2023, 23,467,247 Common Shares remain in treasury.

Chubb Limited securities repurchase authorizations

The Board has authorized share repurchase programs as follows:

•One-time incremental share repurchase program of $5.0 billion of Chubb Common Shares from July 19, 2021 through June 30, 2022;

•$2.5 billion of Chubb Common Shares from May 19, 2022 through June 30, 2023; and

•$5.0 billion of Chubb Common Shares effective July 1, 2023 with no expiration date.

The following table presents repurchases of Chubb's Common Shares conducted in a series of open market transactions under the Board authorizations:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars, except share data)	2023		2022		2023		2022
Number of shares repurchased	2,949,900		3,676,528		8,634,600		14,022,728
Cost of shares repurchased	$	606	$	685	$	1,758	$	2,815
Repurchase authorization remaining at end of period	$	4,398	$	1,816	$	4,398	$	1,816

The following table presents changes in accumulated other comprehensive income (loss):

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars)			As Adjusted				As Adjusted
Accumulated other comprehensive income (loss) (AOCI)
Net unrealized appreciation (depreciation) on investments
Balance – beginning of period, net of tax	$	(6,809)	$	(5,713)	$	(7,279)	$	2,256
Change in period, before reclassification from AOCI (before tax)	(2,240)		(3,324)		(1,935)		(12,898)
Amounts reclassified from AOCI (before tax)	70		279		357		857
Change in period, before tax	(2,170)		(3,045)		(1,578)		(12,041)
Income tax (expense) benefit	29		147		(93)		1,174
Total other comprehensive loss	(2,141)		(2,898)		(1,671)		(10,867)
Noncontrolling interests, net of tax	3		—		3		—
Balance – end of period, net of tax	(8,953)		(8,611)		(8,953)		(8,611)
Current discount rate on liability for future policy benefits
Balance – beginning of period, net of tax	(247)		(427)		(75)		(1,399)
Change in period, before tax	683		479		497		1,546
Income tax expense	(35)		(57)		(21)		(152)
Total other comprehensive income	648		422		476		1,394
Noncontrolling interests, net of tax	(3)		—		(3)		—
Balance – end of period, net of tax	404		(5)		404		(5)

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars)			As Adjusted				As Adjusted
Accumulated other comprehensive income (loss) (AOCI) - continued
Instrument-specific credit risk on market risk benefits
Balance – beginning of period, net of tax	(16)		(17)		(24)		(57)
Change in period, before and net of tax	(5)		8		3		48
Total other comprehensive income (loss)	(5)		8		3		48
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	(21)		(9)		(21)		(9)
Cumulative foreign currency translation adjustment
Balance – beginning of period, net of tax	(2,920)		(2,768)		(2,966)		(2,114)
Change in period, before reclassification from AOCI (before tax)	(314)		(942)		(269)		(1,631)
Amounts reclassified from AOCI (before tax)	(3)		—		(10)		—
Change in period, before tax	(317)		(942)		(279)		(1,631)
Income tax benefit	13		7		21		42
Total other comprehensive loss	(304)		(935)		(258)		(1,589)
Noncontrolling interests, net of tax	(76)		—		(76)		—
Balance – end of period, net of tax	(3,148)		(3,703)		(3,148)		(3,703)
Fair value hedging instruments
Balance – beginning of period, net of tax	(53)		—		(66)		—
Change in period, before reclassification from AOCI (before tax)	(17)		(94)		23		(94)
Amounts reclassified from AOCI (before tax)	55		32		32		32
Change in period, before tax	38		(62)		55		(62)
Income tax (expense) benefit	(7)		13		(11)		13
Total other comprehensive income (loss)	31		(49)		44		(49)
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	(22)		(49)		(22)		(49)
Postretirement benefit liability adjustment
Balance – beginning of period, net of tax	223		259		225		240
Change in period, before tax	(1)		3		(3)		27
Income tax expense	—		(1)		—		(6)
Total other comprehensive income (loss)	(1)		2		(3)		21
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	222		261		222		261
Accumulated other comprehensive income (loss)	$	(11,518)	$	(12,116)	$	(11,518)	$	(12,116)

The following table presents reclassifications from accumulated other comprehensive income (loss) to the Consolidated statements of operations:

	Three Months Ended				Nine Months Ended				Consolidated Statement of Operations Location
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Fixed maturities available for sale	$	(70)	$	(279)	$	(357)	$	(857)	Net realized gains (losses)
Income tax benefit	25		39		59		138		Income tax expense
	$	(45)	$	(240)	$	(298)	$	(719)	Net income
Cumulative foreign currency translation adjustment
Cross-currency swaps	$	3	$	—	$	10	$	—	Interest expense
Income tax expense	(1)		—		(2)		—		Income tax expense
	$	2	$	—	$	8	$	—	Net income
Net gains (losses) of fair value hedging instruments
Cross-currency swaps	$	(51)	$	(32)	$	(20)	$	(32)	Net realized gains (losses)
Cross-currency swaps	(4)		—		(12)		—		Interest expense
Income tax benefit	12		7		7		7		Income tax expense
	$	(43)	$	(25)	$	(25)	$	(25)	Net income
Total amounts reclassified from AOCI	$	(86)	$	(265)	$	(315)	$	(744)

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Share-based compensation	9 Months Ended
	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Share-based compensation	Share-based compensationThe Chubb Limited 2016 Long-Term Incentive Plan, as amended and restated (the Amended 2016 LTIP), permits grants of both incentive and non-qualified stock options principally at an option price per share equal to the grant date fair value of Chubb's Common Shares. Stock options are generally granted with a 3-year vesting period and a 10-year term. Stock options typically vest in equal annual installments over the respective vesting period, which is also the requisite service period. On February 23, 2023, Chubb granted 1,540,002 stock options with a weighted-average grant date fair value of $51.32 each. The fair value of the options issued is estimated on the grant date using the Black-Scholes option pricing model.The Amended 2016 LTIP also permits grants of service-based restricted stock and restricted stock units as well as performance-based restricted stock awards. Chubb generally grants service-based restricted stock and restricted stock units with a 4-year vesting period, based on a graded vesting schedule. The performance-based restricted stock awards granted comprise target awards and premium awards that cliff vest at the end of a 3-year performance period based on both tangible book value (shareholders' equity less goodwill and intangible assets, net of tax) per share growth and P&C combined ratio compared to a defined group of peer companies. Premium awards are subject to an additional vesting provision based on total shareholder return compared to our peer group. The restricted stock is principally granted at market close price on the grant date. On February 23, 2023, Chubb granted 785,319 service-based restricted stock awards, 315,545 service-based restricted stock units, and 407,825 performance-based stock awards to employees and officers with a grant date fair value of $208.60 each. Each restricted stock unit represents our obligation to deliver to the holder one Common Share upon vesting.

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Postretirement benefits

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Compensation and Employee Benefit Plans [Text Block]

Postretirement benefits

The components of net pension and other postretirement benefit costs (benefits) reflected in Net income in the Consolidated statements of operations were as follows:

	Pension Benefit Plans								Other Postretirement Benefit Plans
	2023				2022				2023		2022
Three Months Ended September 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost	$	—	$	2	$	—	$	1	$	—	$	—
Non-service cost (benefit):
Interest cost	35		9		21		5		1		—
Expected return on plan assets	(56)		(13)		(70)		(11)		—		—
Amortization of net actuarial loss	—		—		—		—		(1)		—
Amortization of prior service cost	—		—		—		—		(1)		—
Settlements	3		—		—		—		—		—
Total non-service cost (benefit)	(18)		(4)		(49)		(6)		(1)		—
Net periodic benefit cost (benefit)	$	(18)	$	(2)	$	(49)	$	(5)	$	(1)	$	—

	Pension Benefit Plans								Other Postretirement Benefit Plans
	2023				2022				2023		2022
Nine Months Ended September 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost:	$	—	$	6	$	—	$	3	$	—	$	—
Non-service cost (benefit):
Interest cost	103		27		64		17		2		1
Expected return on plan assets	(168)		(38)		(212)		(33)		(2)		(1)
Amortization of net actuarial loss	—		—		—		—		(1)		—
Amortization of prior service cost	—		—		—		—		(1)		—
Settlements	3		—		—		—		—		—
Total non-service cost (benefit)	(62)		(11)		(148)		(16)		(2)		—
Net periodic benefit cost (benefit)	$	(62)	$	(5)	$	(148)	$	(13)	$	(2)	$	—

The line items in which the service cost and non-service cost (benefit) components of net periodic cost (benefit) are included in the Consolidated statements of operations were as follows:

	Pension Benefit Plans				Other Postretirement Benefit Plans
Three Months Ended September 30	2023		2022		2023		2022
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	—	$	—	$	—
Administrative expenses	2		1		—		—
Total service cost	2		1		—		—
Non-service cost (benefit):
Losses and loss expenses	(1)		(5)		—		—
Administrative expenses	(21)		(50)		(1)		—
Total non-service cost (benefit)	(22)		(55)		(1)		—
Net periodic benefit cost (benefit)	$	(20)	$	(54)	$	(1)	$	—

	Pension Benefit Plans				Other Postretirement Benefit Plans
Nine Months Ended September 30	2023		2022		2023		2022
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	—	$	—	$	—
Administrative expenses	6		3		—		—
Total service cost	6		3		—		—
Non-service cost (benefit):
Losses and loss expenses	(6)		(15)		—		—
Administrative expenses	(67)		(149)		(2)		—
Total non-service cost (benefit)	(73)		(164)		(2)		—
Net periodic benefit cost (benefit)	$	(67)	$	(161)	$	(2)	$	—

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Other Income and Expense

9 Months Ended

Sep. 30, 2023

Other Income and Expenses [Abstract]

Other Income and Expense Disclosure

Other income and expense

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Equity in net income (loss) of partially-owned entities	$	150	$	(111)	$	610	$	180
Gains (losses) from fair value changes in separate account assets (1)	(19)		(67)		(56)		(116)
Asset management and performance fee revenue	55		—		55		—
Asset management and performance fee expense	(33)		—		(33)		—
Federal excise and capital taxes	(6)		(6)		(17)		(15)
Other	7		(18)		(9)		(40)
Total	$	154	$	(202)	$	550	$	9

(1)     Related to gains (losses) from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP.

Equity in net income of partially-owned entities includes our share of net income or loss, both underlying operating income and mark-to-market movement, related to partially-owned investment companies (private equity) where we own more than three percent, and partially-owned insurance companies. This line item includes mark-to-market gains (losses) on private equities of $51 million and $290 million for the three and nine months ended September 30, 2023, respectively, and $(190) million and $(69) million, respectively, for the prior year periods.

Other income and expense includes net income attributable to our investment in Huatai under the equity method of accounting comprising income of $36 million through June 30, 2023, and $28 million and $83 million for the three and nine months ended September 30, 2022, respectively. Effective July 1, 2023, we discontinued the equity method of accounting and include the results of operations of Huatai in our consolidated results.

Also included in Other income and expense are gains (losses) from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP. The offsetting movement in the separate account liabilities is included in Policy benefits in the Consolidated statements of operations.

Asset management and performance fee revenue and expense primarily relate to the management of third-party assets by Huatai's asset management business, which is unrelated to Huatai Group's core insurance operations. These revenues and expenses are recognized in the period in which the services are performed.

Certain federal excise and capital taxes incurred as a result of capital management initiatives are included in Other income and expense as these are considered capital transactions and are excluded from underwriting results. Bad debt expense for uncollectible premiums is also included in Other income and expense.

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Segment information

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Segment information

Segment information

Chubb operates through six business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. These segments distribute their products through various forms of brokers, agencies, and direct marketing programs. All business segments have established relationships with reinsurance intermediaries. Commencing in the third quarter of 2023, the results of Huatai Group's life and asset management business are included in the Life Insurance segment, and the results of Huatai Group's P&C business are included in the Overseas General Insurance segment. Results for Huatai Group’s non-insurance operations, comprising real estate and holding company activity, are included in Corporate. Commencing in the third quarter of 2022, the results of Cigna's business in Asia are included in our Life Insurance segment and, to a lesser extent, Overseas General Insurance segment according to the nature of the business written.

Management uses underwriting income (loss) as the basis for segment performance for its P&C operations. P&C underwriting income (loss) excludes the Life Insurance segment and is calculated by subtracting Losses and loss expenses, Policy benefits, Policy acquisition costs, and Administrative expenses from Net premiums earned. Segment income (loss) includes Underwriting income (loss), Net investment income (loss), and Other operating income and expense items such as each segment's share of the operating income (loss) related to partially-owned entities and miscellaneous income and expense items for which the segments are held accountable. Our main measure of segment performance is Segment income (loss), which also includes Amortization of purchased intangibles acquired by the segment. We determined that this definition of Segment income (loss) is appropriate and aligns with how the business is managed. We continue to evaluate our segments as our business continues to evolve and may further refine our segments and Segment income (loss) measures.

Revenue and expenses managed at the corporate level, including Net realized gains (losses), Market risk benefits gains (losses), Interest expense, Cigna integration expenses, Income tax, and Net income (loss) attributable to noncontrolling interests are reported within Corporate. Cigna integration expenses are one-time costs that are directly attributable to third-party consulting fees, employee-related retention costs, and other professional and legal fees primarily related to the acquisition of Cigna's business in Asia. These items are not allocated to the segment level as they are one-time in nature and are not related to the ongoing business activities of the segment. The Chief Executive Officer does not manage segment results or allocate resources to segments when considering these costs, and therefore are excluded from our definition of Segment income (loss).

Certain items are presented in a different manner for segment reporting purposes than in the Consolidated Financial Statements. These items are reconciled to the consolidated presentation in the Segment measure reclass column below and include:

•Losses and loss expenses include realized gains and losses on crop derivatives. These derivatives were purchased to provide economic benefit, in a manner similar to reinsurance protection, in the event that a significant decline in commodity pricing impacts underwriting results. We view gains and losses on these derivatives as part of the results of our underwriting operations, and therefore realized gains (losses) from these derivatives are reclassified to Losses and loss expenses.

•Policy benefits include fair value changes on separate accounts that do not qualify for separate accounting under GAAP. These gains and losses have been reclassified from Other (income) expense. We view gains and losses from fair value changes in both separate account assets and liabilities as part of the results of our underwriting operations, and therefore these gains and losses are reclassified to Policy benefits.

•Net investment income includes investment income reclassified from Other (income) expense related to partially-owned investment companies (private equity partnerships) where our ownership interest is in excess of three percent. We view investment income from these equity-method private equity partnerships as Net investment income for segment reporting purposes.

The following tables present the Statement of Operations by segment:

For the Three Months Ended September 30, 2023 (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated
Net premiums written	$	5,132	$	1,527	$	1,521	$	3,211	$	261	$	1,452	$	—	$	—	$	13,104
Net premiums earned	4,735		1,407		1,540		3,311		239		1,442		—		—		12,674
Losses and loss expenses	3,025		900		1,356		1,635		116		20		61		(7)		7,106
Policy benefits	—		—		—		91		—		866		—		(19)		938
Policy acquisition costs	640		287		76		827		69		279		—		—		2,178
Administrative expenses	323		84		3		327		9		216		98		—		1,060
Underwriting income (loss)	747		136		105		431		45		61		(159)		26		1,392
Net investment income	780		94		12		248		47		211		14		(92)		1,314
Other (income) expense	6		2		—		(10)		—		(28)		(51)		(73)		(154)
Amortization expense of    purchased intangibles	—		3		6		19		—		12		44		—		84
Segment income (loss)	$	1,521	$	225	$	111	$	670	$	92	$	288	$	(138)	$	7	$	2,776
Net realized gains (losses)													(96)		(7)		(103)
Market risk benefits gains (losses)													(32)		—		(32)
Interest expense													174		—		174
Cigna integration expenses													14		—		14
Income tax expense													413		—		413
Net income (loss)													(867)		—		2,040
Net loss attributable to noncontrolling interests													(3)		—		(3)
Net income (loss) attributable to Chubb													$	(864)	$	—	$	2,043

For the Three Months Ended September 30, 2022 (As Adjusted) (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated
Net premiums written	$	4,722	$	1,392	$	1,723	$	2,645	$	265	$	1,265	$	—	$	—	$	12,012
Net premiums earned	4,283		1,334		1,673		2,741		255		1,244		—		—		11,530
Losses and loss expenses	3,036		857		1,444		1,333		311		27		74		(19)		7,063
Policy benefits	—		—		—		108		—		666		—		(67)		707
Policy acquisition costs	583		274		68		720		59		266		—		—		1,970
Administrative expenses	272		71		3		264		8		174		91		—		883
Underwriting income (loss)	392		132		158		316		(123)		111		(165)		86		907
Net investment income	589		76		9		151		71		147		5		(69)		979
Other (income) expense	6		1		1		(2)		—		4		194		(2)		202
Amortization expense of    purchased intangibles	—		2		7		12		—		2		46		—		69
Segment income (loss)	$	975	$	205	$	159	$	457	$	(52)	$	252	$	(400)	$	19	$	1,615
Net realized gains (losses)													(437)		(19)		(456)
Market risk benefits gains (losses)													69		—		69
Interest expense													150		—		150
Cigna integration expenses													23		—		23
Income tax expense													263		—		263
Net income (loss)													$	(1,204)	$	—	$	792

For the Nine Months Ended September 30, 2023 (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated
Net premiums written	$	14,575	$	4,404	$	2,581	$	9,359	$	831	$	4,015	$	—	$	—	$	35,765
Net premiums earned	13,710		4,084		2,334		9,005		720		3,962		—		—		33,815
Losses and loss expenses	8,625		2,634		2,003		4,139		319		87		133		(3)		17,937
Policy benefits	—		—		—		338		—		2,283		—		(56)		2,565
Policy acquisition costs	1,867		836		128		2,286		196		829		—		—		6,142
Administrative expenses	934		247		9		899		27		553		290		—		2,959
Underwriting income (loss)	2,284		367		194		1,343		178		210		(423)		59		4,212
Net investment income	2,204		262		43		636		144		525		28		(276)		3,566
Other (income) expense	18		2		—		(29)		(1)		(69)		(251)		(220)		(550)
Amortization expense of    purchased intangibles	—		8		19		52		—		18		129		—		226
Segment income (loss)	$	4,470	$	619	$	218	$	1,956	$	323	$	786	$	(273)	$	3	$	8,102
Net realized gains (losses)													(481)		(3)		(484)
Market risk benefits gains (losses)													(154)		—		(154)
Interest expense													499		—		499
Cigna integration expenses													51		—		51
Income tax expense													1,189		—		1,189
Net income (loss)													$	(2,647)	$	—	$	5,725
Net loss attributable to noncontrolling interests													(3)		—		(3)
Net income (loss) attributable to Chubb													$	(2,644)	$	—	$	5,728

For the Nine Months Ended September 30, 2022 (As Adjusted) (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated
Net premiums written	$	13,426	$	3,998	$	2,523	$	8,364	$	780	$	2,403	$	—	$	—	$	31,494
Net premiums earned	12,645		3,852		2,217		8,065		712		2,325		—		—		29,816
Losses and loss expenses	7,979		2,343		1,830		3,772		565		78		275		(9)		16,833
Policy benefits	—		—		—		282		—		1,275		—		(116)		1,441
Policy acquisition costs	1,701		792		111		2,096		178		537		—		—		5,415
Administrative expenses	814		213		4		811		27		346		264		—		2,479
Underwriting income (loss)	2,151		504		272		1,104		(58)		89		(539)		125		3,648
Net investment income (loss)	1,600		199		23		460		232		359		(4)		(180)		2,689
Other (income) expense	12		3		1		3		1		(38)		73		(64)		(9)
Amortization expense of    purchased intangibles	—		7		20		40		—		7		137		—		211
Segment income (loss)	$	3,739	$	693	$	274	$	1,521	$	173	$	479	$	(753)	$	9	$	6,135
Net realized gains (losses)													(927)		(9)		(936)
Market risk benefits gains (losses)													85		—		85
Interest expense													416		—		416
Cigna integration expenses													26		—		26
Income tax expense													907		—		907
Net income (loss)													$	(2,944)	$	—	$	3,935

Underwriting assets are reviewed in total by management for purposes of decision-making. Other than Unpaid losses and loss expenses, Future policy benefits, Reinsurance recoverables, DAC, VOBA, Goodwill and Other intangible assets, Chubb does not allocate assets to its segments.

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Earnings per share

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Earnings per share

Earnings per share

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars, except share and per share data)			As Adjusted				As Adjusted
Numerator:
Net income	$	2,040	$	792	$	5,725	$	3,935
Net loss attributable to noncontrolling interests	(3)		—		(3)		—
Net income attributable to Chubb	$	2,043	$	792	$	5,728	$	3,935
Denominator:
Denominator for basic earnings per share attributable to Chubb:
Weighted-average shares outstanding	409,505,454		416,542,101		412,076,470		421,290,032
Denominator for diluted earnings per share attributable to Chubb:
Share-based compensation plans	3,100,505		3,076,855		3,288,940		3,733,449
Weighted-average shares outstanding and assumed conversions	412,605,959		419,618,956		415,365,410		425,023,481
Basic earnings per share attributable to Chubb	$	4.99	$	1.90	$	13.90	$	9.34
Diluted earnings per share attributable to Chubb	$	4.95	$	1.89	$	13.79	$	9.26
Potential anti-dilutive share conversions	2,562,206		1,693,502		2,330,821		1,377,784

Excluded from weighted-average shares outstanding and assumed conversions is the impact of securities that would have been anti-dilutive during the respective periods. These securities consisted of stock options in which the underlying exercise prices were greater than the average market prices of our Common Shares. Refer to Note 12 to the Consolidated Financial Statements of our 2022 Form 10-K for additional information on stock options.

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Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net income (loss)	$ 2,043	$ 792	$ 5,728	$ 3,935

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Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Terminated	false
John J. Lupica [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On July 31, 2023, John J. Lupica, Vice Chairman, Chubb Group, and President, North America Insurance, adopted a "Rule 10b5-1 trading arrangement" as defined under Item 408 of SEC Regulation S-K. The arrangement is scheduled to expire on October 30, 2024, subject to earlier termination in accordance with its terms. The aggregate number of Chubb common shares authorized to be sold pursuant to the trading arrangement is 17,810.
Name	John J. Lupica
Title	Vice Chairman, Chubb Group, and President, North America Insurance
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	July 31, 2023
Aggregate Available	17,810

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General and significant accounting policies (Policies)

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of presentation

Basis of presentation

Chubb Limited is a holding company incorporated in Zurich, Switzerland. Chubb Limited, through its subsidiaries, provides a broad range of insurance and reinsurance products to insureds worldwide. Our results are reported through the following business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. Refer to Note 18 for additional information.

The interim unaudited consolidated financial statements include the accounts of Chubb Limited and its subsidiaries (collectively, Chubb, we, us, or our), over which Chubb exercises control, including Huatai Group, our majority-owned subsidiary, and minority-owned entities such as variable interest entities (VIEs) in which Chubb is considered the primary beneficiary. Noncontrolling interests on the consolidated financial statements represent the portion of majority-owned subsidiaries and VIEs in which we do not have direct equity ownership. These interim unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) and, in the opinion of management, reflect all adjustments necessary for a fair statement of the results and financial position for such periods. All significant intercompany accounts and transactions, including internal reinsurance transactions, have been eliminated.

On July 1, 2023, Chubb increased its investment in Huatai Group from approximately 64.2 percent to approximately 69.6 percent. Accordingly, Chubb discontinued the equity method of accounting for its investment in Huatai Group and applied consolidation accounting. Business activity for, and the financial position of, Huatai Group is reported at 100 percent on the Consolidated Financial Statements starting when Chubb obtained control of Huatai Group on July 1, 2023. The relevant amounts attributable to shareholders other than Chubb (representing approximately 30.4 percent of Huatai Group) are reflected under Noncontrolling interests, Net income (loss) attributable to noncontrolling interests, and Comprehensive income (loss) attributable to noncontrolling interests in the Consolidated Financial Statements. Refer to Note 2 for additional information.

Huatai Group's life and asset management businesses are included in the Life Insurance segment, and Huatai Group's P&C business is included in the Overseas General Insurance segment. Results for Huatai Group's non-insurance operations, comprising real estate and holding company activity, are included in Corporate.

The results of operations and cash flows for any interim period are not necessarily indicative of the results for the full year. These consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our 2022 Form 10-K.

Accounting guidance adopted

Accounting guidance adopted in 2023

Targeted Improvements to the Accounting for Long-Duration Contracts

Effective January 1, 2023, we adopted new guidance on the accounting for long-duration contracts (LDTI). The new accounting guidance requires more frequent updating of assumptions and a standardized discount rate for the future policy benefit liability, a requirement to use the fair value measurement model for policies with market risk benefits, simplified amortization of deferred acquisition costs, and enhanced disclosures.

With the exception of market risk benefits, we adopted this guidance on a modified retrospective basis. Under the modified retrospective basis, the liability for future policy benefits is updated to remove any amounts related to changes to the original discount rate at January 1, 2021 (the transition date) in AOCI and future cash flow assumptions are applied to contracts in force. The liability for future policy benefits prior to the transition date continues to use the original discount rate (interest accretion rate). The guidance for long-duration contracts applicable to market risk benefits, primarily assumed reinsurance programs involving minimum benefit guarantees under variable annuity contracts, was adopted on a retrospective transition approach. Under the retrospective transition approach, we calculated the fair value of market risk benefits which were previously accounted for under an insurance accounting model and recognized an adjustment to retained earnings as of January 1, 2021.

On January 1, 2021, we recognized a cumulative effect adjustment and increased beginning retained earnings by $52 million, and decreased AOCI by $1.8 billion. Results for the prior reporting periods in this report are presented in accordance with the new guidance. We also adopted the required disclosures in Note 6 Deferred acquisition costs, Note 9 Future policy benefits, Note 10 Policyholders’ account balances, Note 11 Market risk benefits, and Note 12 Separate accounts.

The impact of adoption of the new guidance on our historical financial statements is as follows:

	December 31, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated balance sheet
Reinsurance recoverable on losses and loss expenses	$	18,901	$	(42)	$	18,859
Reinsurance recoverable on policy benefits	303		(1)		302
Deferred policy acquisition costs	5,788		243		6,031
Value of business acquired	3,596		106		3,702
Prepaid reinsurance premiums	3,140		(4)		3,136
Investments in partially-owned insurance companies	2,877		(370)		2,507
Unpaid losses and loss expenses	76,323		(576)		75,747
Unearned premiums	20,360		(647)		19,713
Future policy benefits	10,120		356		10,476
Market risk benefits	—		800		800
Insurance and reinsurance balances payable	7,795		(15)		7,780
Deferred tax liabilities	292		85		377
Retained Earnings	48,334		(29)		48,305
Accumulated other comprehensive income (loss)	(10,193)		8		(10,185)

Excluded from the table above is the reclassification of Separate account assets, Separate account liabilities, and Policyholders' account balances as separate line items on the Consolidated balance sheets. Separate accounts assets were previously classified in Other assets, and Separate account liabilities and Policyholders' account balances were previously classified in Accounts payable, accrued expenses, and other liabilities.

	Three Months Ended						Nine Months Ended
	September 30, 2022						September 30, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted		As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statements of operations and comprehensive income
Net premiums written	$	12,020	$	(8)	$	12,012	$	31,521	$	(27)	$	31,494
Net premiums earned	11,535		(5)		11,530		29,838		(22)		29,816
Net realized gains (losses)	(384)		(72)		(456)		(787)		(149)		(936)
Market risk benefits gains (losses)	—		69		69		—		85		85
Losses and loss expenses	7,279		(216)		7,063		17,474		(641)		16,833
Policy benefits	486		221		707		790		651		1,441
Policy acquisition costs	1,975		(5)		1,970		5,451		(36)		5,415
Other (income) expense	188		14		202		(21)		12		(9)
Income tax expense	265		(2)		263		913		(6)		907
Net Income	812		(20)		792		4,001		(66)		3,935
Other comprehensive income
Change in current discount rate on future policy benefits	—		479		479		—		1,546		1,546
Change in instrument-specific credit risk on market risk benefits	—		8		8		—		48		48
Income tax benefit related to OCI items	165		(56)		109		1,222		(151)		1,071
Comprehensive income (loss)	(3,093)		435		(2,658)		(8,529)		1,422		(7,107)

	Nine Months Ended
	September 30,2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statement of cash flows
Net cash flows from operating activities	$	8,592	$	8	$	8,600
Net cash flows used for financing activities	(2,722)		(8)		(2,730)

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of future policy benefits:

	Life Insurance								Overseas General Insurance				Offsetting Equity Line Classification
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		A&H		Total
Future policy benefits
Balance – December 31, 2020 (1)	$	391	$	2,578	$	2,270	$	72	$	754	$	6,065
Effect of change in current discount rate	63		1,189		299		17		19		1,587		AOCI
Balance – January 1, 2021	$	454	$	3,767	$	2,569	$	89	$	773	$	7,652

(1)     Includes future policy benefits previously included within Unpaid losses on the pre-adoption Consolidated balance sheets, primarily certain international A&H business, and excludes deferred profit liability and certain guaranteed minimum death benefits reclassified to Market risk benefits on the post adoption period balance sheets.

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of market risk benefits:

(in millions of U.S. dollars)			Offsetting Equity Line Classification
Market risk benefits
Balance – December 31, 2020	$	1,138
Cumulative effect of changes in instrument-specific credit risk between original contract issuance date and transition date (1)	84		AOCI
Other fair value adjustments	(59)		Retained Earnings
Balance – January 1, 2021	$	1,163

(1)     Includes $77 million of instrument-specific credit risk allocated from retained earnings to AOCI.

Deferred policy acquisition costs and value of business acquired

Deferred policy acquisition costs (DAC)

Policy acquisition costs on long-duration contracts are grouped by contract type and issue year into cohorts consistent with the grouping used in estimating the associated liability. Deferred policy acquisition costs are amortized on a constant level basis over the expected term of the related contracts to approximate straight-line amortization. The constant level basis used for amortization is the face amount in force and is projected using the same assumptions used in estimating the liability for future policy benefits. If those projected assumptions change in future periods, they will be reflected in the cohort level amortization basis at that time. Unexpected changes in the in-force portfolio, due to variances in mortality and lapse experience, are recognized over the contract term. Changes in future mortality and lapse assumptions are also recognized prospectively over the remaining expected contract term.

Future policy benefits

Future policy benefits

For traditional and limited-payment contracts, contracts are grouped into cohorts by contract type and issue year to determine a liability for future policy benefits. The future policy benefit liability (FPBL) is the present value of estimated future policy benefits to be paid to or on behalf of policyholders and certain related expenses less the present value of estimated future net premiums to be collected from policyholders, and is accrued as premium revenue is recognized. The valuation of this liability requires management to make estimates and assumptions regarding expenses, mortality, and persistency. Estimates are primarily based on historical experience. Actual results could differ materially from these estimates.

The liability is adjusted for differences between actual and expected experience. With the exception of the expense assumption, we review our future cash flow assumptions at least annually to determine if the net premium ratio (NPR), the mechanism used to record the liability as premium is earned, used to calculate the liability should be changed at that time. We have elected to use expense assumptions that are locked in at contract inception and are not subsequently reviewed or updated. Each quarter, we update the cash flows expected over the entire life of each cohort for actual historical experience and projected future cash

flows. These updated cash flows are used to calculate the revised NPR, which is used to derive an updated FPBL as of the beginning of the current reporting period, discounted at the original contract issuance discount rate. This amount is then compared to the carrying amount of the liability as of that same date, but before the updating of cash flow assumptions, to determine the current period change in FPBL. This current period change in the liability is the liability remeasurement gain or loss and is recorded in Policy benefits in the Consolidated statements of operations. In subsequent periods, the revised NPR is used to measure the FPBL until future revisions become required.

For traditional and limited-payment contracts, the discount rate assumption based on an upper-medium grade fixed-income instrument yield. An equivalent rate is derived based on A-credit-rated fixed-income instruments with similar duration to the liability. The discount rate assumption is updated quarterly and used to remeasure the liability at each reporting date, with the resulting change reflected in Other comprehensive income. For liability cash flows that are projected beyond the duration of market-observable A-credit-rated fixed-income instruments, we use the last market-observable yield level, as the basis for a linear interpolation to determine yield assumptions for durations that do not have market-observable yields.

Deferred profit liability

For limited-payment products, gross premiums received in excess of net premiums are deferred at initial recognition as a deferred profit liability (DPL) and recorded as a component of Future policy benefits in the Consolidated balance sheets. Net premiums are measured using actual cash flows and future cash flow assumptions consistent with those used in the measurement of the liability for future policy benefits and remeasured quarterly. The DPL is amortized in proportion to the discounted in-force policies. Interest is accreted on the balance of the DPL using the discount rate consistent with the interest accretion on the FPBL. The recalculated DPL, including adjusted amortization through the current period, is compared to the current carrying amount and the difference is recognized as an adjustment to Policy benefits in the Consolidated statements of operations as a remeasurement gain or loss.

Market Risk Benefit

Market risk benefits

Chubb reinsures various death and living benefit guarantees associated with variable annuities issued primarily in the United States, which are referred to as market risk benefits. These reinsurance contracts provide both protection to the ceding entity from other-than-nominal capital market risk and expose us to other-than-nominal capital market risk.

Market risk benefits are measured at fair value using a valuation model based on current net exposures, market data, our experience, and other factors. Changes in fair value are recognized in Market risk benefits gains (losses) in the Consolidated statements of operations, except the change in fair value due to a change in the instrument-specific credit risk, which is recognized in other comprehensive income. Refer to Note 11 for additional information.

Huatai asset management non-premium revenue

Asset management and performance fee revenue and expensesHuatai's asset management companies recognize revenue and expenses unrelated to Chubb's core insurance operations from the management of third-party assets. These revenues include fixed-rate management fees, which are recognized in the period in which the services are performed, and asset performance fees, which are recognized to the extent it is probable that a significant reversal will not occur. These fees and expenses are included in Other (income) expense on the Consolidated statements of operations. Refer to Note 17 for additional information.

loans and leases receivable policy

Private debt held-for-investment, at amortized costPrivate debt held-for-investment are investments related principally to the funding of public and private projects that are mostly infrastructure related, and were acquired as part of Huatai’s investment portfolio upon consolidation. They have stated interest rates and maturity dates with fixed or determinable payments. Private debt held-for-investment are carried at amortized cost, net of a valuation allowance for credit losses. Interest income is recorded when earned.

Other Investment

Other investments

Chubb consolidates entities in which it has a controlling interest or is a primary beneficiary of a VIE. Huatai’s asset management businesses create investment entities known as sponsored investment products which include mutual funds with primary holdings in fixed maturities.

Other investments principally comprised these fixed maturities. These securities are reported at fair value with changes in fair value reported through the Consolidated statements of operations within Net realized gains (losses) as required under investment company accounting standards.

Consolidation, Variable Interest Entity, Policy

Consolidation of variable interest entities (VIEs)Chubb consolidates entities in which it has a controlling interest or is a primary beneficiary of a VIE. Huatai's asset management businesses create investment entities known as sponsored investment products which include mutual funds with primary holdings in fixed maturities. These entities are created for varied purposes during the ordinary course of business, such as to obtain returns from investments, and to collect management fees for the assets managed on behalf of the third party investors. While many investors may not be related parties, Huatai invests in these funds at various ownership percentages. We determined that we are the primary beneficiary of these VIEs and generally consolidate when we hold an economic interest of 10 percent or more. The consolidation of VIEs records 100 percent of the underlying assets and liabilities of the mutual funds within the Consolidated balance sheets. The relevant amounts attributable to investors other than Chubb are reflected as Noncontrolling interests. Where Huatai's ownership in these sponsored investment products is less than 10 percent, we generally would not expect to be the primary beneficiary of these VIEs. Refer to Note 3 g) for additional information.

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Fair value measurements (Fair Value Measurement Policy) (Policies)

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurement, Policy

Fair value of financial assets and financial liabilities is estimated based on the framework established in the fair value accounting guidance. The guidance defines fair value as the price to sell an asset or transfer a liability (an exit price) in an orderly transaction between market participants and establishes a three-level valuation hierarchy based on the reliability of the inputs. The fair value hierarchy gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data.

The three levels of the hierarchy are as follows:

•Level 1 – Unadjusted quoted prices for identical assets or liabilities in active markets;

•Level 2 – Includes, among other items, inputs other than quoted prices that are observable for the asset or liability such as

interest rates and yield curves, quoted prices for similar assets and liabilities in active markets, and quoted prices for identical or similar assets and liabilities in markets that are not active; and

•Level 3 – Inputs that are unobservable and reflect management’s judgments about assumptions that market participants

would use in pricing an asset or liability.

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General and significant accounting policies (Tables)

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Accounting Standards Update and Change in Accounting Principle

The impact of adoption of the new guidance on our historical financial statements is as follows:

	December 31, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated balance sheet
Reinsurance recoverable on losses and loss expenses	$	18,901	$	(42)	$	18,859
Reinsurance recoverable on policy benefits	303		(1)		302
Deferred policy acquisition costs	5,788		243		6,031
Value of business acquired	3,596		106		3,702
Prepaid reinsurance premiums	3,140		(4)		3,136
Investments in partially-owned insurance companies	2,877		(370)		2,507
Unpaid losses and loss expenses	76,323		(576)		75,747
Unearned premiums	20,360		(647)		19,713
Future policy benefits	10,120		356		10,476
Market risk benefits	—		800		800
Insurance and reinsurance balances payable	7,795		(15)		7,780
Deferred tax liabilities	292		85		377
Retained Earnings	48,334		(29)		48,305
Accumulated other comprehensive income (loss)	(10,193)		8		(10,185)

Excluded from the table above is the reclassification of Separate account assets, Separate account liabilities, and Policyholders' account balances as separate line items on the Consolidated balance sheets. Separate accounts assets were previously classified in Other assets, and Separate account liabilities and Policyholders' account balances were previously classified in Accounts payable, accrued expenses, and other liabilities.

	Three Months Ended						Nine Months Ended
	September 30, 2022						September 30, 2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted		As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statements of operations and comprehensive income
Net premiums written	$	12,020	$	(8)	$	12,012	$	31,521	$	(27)	$	31,494
Net premiums earned	11,535		(5)		11,530		29,838		(22)		29,816
Net realized gains (losses)	(384)		(72)		(456)		(787)		(149)		(936)
Market risk benefits gains (losses)	—		69		69		—		85		85
Losses and loss expenses	7,279		(216)		7,063		17,474		(641)		16,833
Policy benefits	486		221		707		790		651		1,441
Policy acquisition costs	1,975		(5)		1,970		5,451		(36)		5,415
Other (income) expense	188		14		202		(21)		12		(9)
Income tax expense	265		(2)		263		913		(6)		907
Net Income	812		(20)		792		4,001		(66)		3,935
Other comprehensive income
Change in current discount rate on future policy benefits	—		479		479		—		1,546		1,546
Change in instrument-specific credit risk on market risk benefits	—		8		8		—		48		48
Income tax benefit related to OCI items	165		(56)		109		1,222		(151)		1,071
Comprehensive income (loss)	(3,093)		435		(2,658)		(8,529)		1,422		(7,107)

	Nine Months Ended
	September 30,2022
(in millions of U.S. dollars)	As Previously Reported		LDTI Adoption Adjustment		As Adjusted
Consolidated statement of cash flows
Net cash flows from operating activities	$	8,592	$	8	$	8,600
Net cash flows used for financing activities	(2,722)		(8)		(2,730)

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of future policy benefits:

	Life Insurance								Overseas General Insurance				Offsetting Equity Line Classification
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		A&H		Total
Future policy benefits
Balance – December 31, 2020 (1)	$	391	$	2,578	$	2,270	$	72	$	754	$	6,065
Effect of change in current discount rate	63		1,189		299		17		19		1,587		AOCI
Balance – January 1, 2021	$	454	$	3,767	$	2,569	$	89	$	773	$	7,652

(1)     Includes future policy benefits previously included within Unpaid losses on the pre-adoption Consolidated balance sheets, primarily certain international A&H business, and excludes deferred profit liability and certain guaranteed minimum death benefits reclassified to Market risk benefits on the post adoption period balance sheets.

The following table presents a reconciliation of the pre-adoption December 31, 2020, to the post adoption January 1, 2021, balance of market risk benefits:

(in millions of U.S. dollars)			Offsetting Equity Line Classification
Market risk benefits
Balance – December 31, 2020	$	1,138
Cumulative effect of changes in instrument-specific credit risk between original contract issuance date and transition date (1)	84		AOCI
Other fair value adjustments	(59)		Retained Earnings
Balance – January 1, 2021	$	1,163

(1)     Includes $77 million of instrument-specific credit risk allocated from retained earnings to AOCI.

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Acquisitions (Tables)

9 Months Ended

Sep. 30, 2023

Sep. 30, 2022

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The following table summarizes Chubb's best estimate of fair value of the assets acquired and liabilities assumed on July 1, 2023. The fair value of assets and liabilities are preliminary and may change with offsetting adjustments to goodwill. Chubb may make further adjustments to its purchase price allocation and the fair value of noncontrolling interest through the end of the permissible one-year measurement period.

Preliminary estimate of Huatai Group assets and liabilities consolidated	July 1
(in millions of U.S. dollars)	2023
Assets
Investments and Cash	$	13,346
Accrued investment income	60
Insurance and reinsurance balances receivable	277
Reinsurance recoverable on losses and loss expenses	581
Reinsurance recoverable on future policy benefits	27
Value of business acquired	309
Goodwill and intangible assets	5,049
Other assets	748
Total assets	$	20,397
Liabilities
Unpaid losses and loss expenses	$	831
Unearned premiums	800
Future policy benefits	2,287
Policyholders' account balances	4,014
Insurance and reinsurance balances payable	644
Accounts payable, accrued expenses, and other liabilities	702
Deferred tax liabilities	232
Repurchase agreements	1,269
Total liabilities	$	10,779
Net acquired assets, including goodwill, attributable to Chubb	4,408
Net acquired assets, attributable to noncontrolling interests	5,210
Net acquired assets, including goodwill	$	9,618

The following table summarizes the fair value of the assets acquired and liabilities assumed at July 1, 2022:

Assets acquired and liabilities assumed from Cigna's business in Asia	July 1
(in millions of U.S. dollars)	2022
Assets
Investments and Cash	$	5,274
Accrued investment income	33
Insurance and reinsurance balances receivable	52
Reinsurance recoverable on losses and loss expenses	3
Reinsurance recoverable on future policy benefits	85
Value of business acquired	3,633
Goodwill and intangible assets	1,486
Other assets	648
Total assets	$	11,214
Liabilities
Unpaid losses and loss expenses	$	12
Unearned premiums	60
Future policy benefits	3,856
Insurance and reinsurance balances payable	115
Accounts payable, accrued expenses, and other liabilities	926
Deferred tax liabilities	886
Total liabilities	$	5,855
Net acquired assets, including goodwill	5,359
Total	$	11,214

Schedule of Business Acquisitions, by Acquisition

The following table summarizes the results of the acquired Huatai Group operations that have been included within our Consolidated statements of operations for the three and nine months ended September 30, 2023:

(in millions of U.S. dollars)
Total revenues	$	389
Net loss	$	(11)
Net loss attributable to Chubb	$	(9)

The following table summarizes the results of the acquired Cigna business in Asia that have been included within our Consolidated statements of operations for the three and nine months ended September 30, 2022:

(in millions of U.S. dollars)
Total revenues	$	681
Net income	$	17

Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination

The preliminary purchase price allocation to intangible assets recorded in connection with the Huatai Group acquisition and their related useful lives at July 1, 2023, are as follows:

(in millions of U.S. dollars)	Amount		Weighted-average useful life
Definite life
Agency distribution relationships	$	332	20 years
Asset management customer contracts	94		16 years
Unearned premium reserves (UPR) intangible asset	95		3 years
Land use rights	569		31 years
Technology	45		6 years
Indefinite life
Trademarks	398		Indefinite
Asset management mutual funds	122		Indefinite
Total identified intangible assets	$	1,655

Business Acquisition, Pro Forma Information

The following table presents supplemental unaudited pro forma consolidated information for the periods indicated as though the acquisition of a controlling majority interest in Huatai Group that occurred on July 1, 2023, had instead occurred on January 1, 2022. The unaudited pro forma consolidated financial information is presented for informational purposes only and is not necessarily indicative of the operating results that would have occurred had the acquisition of a controlling majority interest been consummated on January 1, 2022, nor is it necessarily indicative of future operating results. Significant assumptions used to determine pro forma operating results include amortization of VOBA and other intangible assets.

	Three Months Ended				Nine Months Ended
Pro forma:	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Net premiums earned	$	12,674	$	11,952	$	34,605	$	30,996
Total revenues	$	13,755	$	12,612	$	37,589	$	33,019
Net income	$	1,905	$	787	$	5,595	$	3,975
Net income attributable to Chubb	$	1,912	$	777	$	5,587	$	3,935

The following table presents supplemental unaudited pro forma consolidated information for the periods indicated as though the acquisition of Cigna's business in Asia that occurred on July 1, 2022, had instead occurred on January 1, 2021. The unaudited pro forma consolidated financial information is presented for informational purposes only and is not necessarily indicative of the operating results that would have occurred had the acquisition been consummated on January 1, 2021, nor is it necessarily indicative of future operating results. Significant assumptions used to determine pro forma operating results include amortization of VOBA and other intangible assets and recognition of interest expense associated with the repurchase agreement transactions used to effect the acquisition.

	Three Months Ended		Nine Months Ended
Pro forma:	September 30		September 30
(in millions of U.S. dollars)	2022		2022
Net premiums earned	$	11,530	$	31,341
Total revenues	$	12,124	$	33,161
Net income	$	837	$	4,172

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Investments (Tables)

9 Months Ended

Sep. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule Of Amortized Cost and Fair Value of Available-for-sale Securities

September 30, 2023	Amortized Cost		Valuation Allowance		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Available for sale
U.S. Treasury / Agency	$	3,944	$	—	$	2	$	(265)	$	3,681
Non-U.S.	34,912		(53)		239		(2,381)		32,717
Corporate and asset-backed securities	44,932		(104)		61		(4,034)		40,855
Mortgage-backed securities	22,402		(1)		6		(2,802)		19,605
Municipal	3,165		—		2		(259)		2,908
	$	109,355	$	(158)	$	310	$	(9,741)	$	99,766

December 31, 2022	Amortized Cost		Valuation Allowance		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Available for sale
U.S. Treasury / Agency	$	2,792	$	—	$	5	$	(171)	$	2,626
Non-U.S.	28,064		(59)		108		(2,205)		25,908
Corporate and asset-backed securities	40,547		(107)		49		(3,534)		36,955
Mortgage-backed securities	17,871		(3)		4		(2,021)		15,851
Municipal	4,081		—		8		(209)		3,880
	$	93,355	$	(169)	$	174	$	(8,140)	$	85,220

Schedule Of Amortized Cost And Fair Value Of HTM Fixed Maturities

December 31, 2022	Amortized Cost		Valuation Allowance		Net Carrying Value		Gross Unrealized Appreciation		Gross Unrealized Depreciation		Fair Value
(in millions of U.S. dollars)
Held to maturity
U.S. Treasury / Agency	$	1,417	$	—	$	1,417	$	1	$	(48)	$	1,370
Non-U.S.	1,140		(4)		1,136		—		(82)		1,054
Corporate and asset-backed securities	1,733		(28)		1,705		1		(126)		1,580
Mortgage-backed securities	1,456		(1)		1,455		—		(104)		1,351
Municipal	3,136		(1)		3,135		1		(52)		3,084
	$	8,882	$	(34)	$	8,848	$	3	$	(412)	$	8,439

Debt Securities, Held-to-maturity, Credit Quality Indicator

The following table presents the amortized cost of our held to maturity securities according to S&P rating:

	December 31, 2022
(in millions of U.S. dollars, except for percentages)	Amortized cost		% of Total
AAA	$	1,612	18	%
AA	5,023		57	%
A	1,634		18	%
BBB	593		7	%
BB	20		—	%
Total	$	8,882	100	%

Schedule Of Fixed Maturities By Contractual Maturity

The following table presents fixed maturities by contractual maturity:

	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)	Net Carrying Value		Fair Value		Net Carrying Value		Fair Value
Available for sale
Due in 1 year or less	$	4,805	$	4,805	$	2,962	$	2,962
Due after 1 year through 5 years	31,738		31,738		24,791		24,791
Due after 5 years through 10 years	27,452		27,452		26,679		26,679
Due after 10 years	16,166		16,166		14,937		14,937
	80,161		80,161		69,369		69,369
Mortgage-backed securities	19,605		19,605		15,851		15,851
	$	99,766	$	99,766	$	85,220	$	85,220
Held to maturity
Due in 1 year or less	$	—	$	—	$	1,015	$	1,003
Due after 1 year through 5 years	—		—		3,658		3,531
Due after 5 years through 10 years	—		—		1,460		1,423
Due after 10 years	—		—		1,260		1,131
	—		—		7,393		7,088
Mortgage-backed securities	—		—		1,455		1,351
	$	—	$	—	$	8,848	$	8,439

Schedule Of Aggregate Fair Value And Gross Unrealized Loss By Length Of Time The Security Has Continuously Been In An Unrealized Loss Position

The following tables present, for AFS fixed maturities in an unrealized loss position (including securities on loan) that are not deemed to have expected credit losses, the aggregate fair value and gross unrealized loss by length of time the security has been in an unrealized loss position:

	0 – 12 Months				Over 12 Months				Total
September 30, 2023	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
(in millions of U.S. dollars)
U.S. Treasury / Agency	$	1,108	$	(32)	$	2,449	$	(233)	$	3,557	$	(265)
Non-U.S.	8,591		(280)		16,631		(1,670)		25,222		(1,950)
Corporate and asset-backed securities	10,120		(362)		22,672		(2,441)		32,792		(2,803)
Mortgage-backed securities	5,827		(249)		13,450		(2,510)		19,277		(2,759)
Municipal	1,389		(51)		1,269		(208)		2,658		(259)
Total AFS fixed maturities	$	27,035	$	(974)	$	56,471	$	(7,062)	$	83,506	$	(8,036)

	0 – 12 Months				Over 12 Months				Total
December 31, 2022	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
(in millions of U.S. dollars)
U.S. Treasury / Agency	$	2,152	$	(125)	$	386	$	(46)	$	2,538	$	(171)
Non-U.S.	15,538		(1,012)		5,490		(704)		21,028		(1,716)
Corporate and asset-backed securities	25,687		(1,793)		4,190		(552)		29,877		(2,345)
Mortgage-backed securities	10,561		(1,033)		4,770		(941)		15,331		(1,974)
Municipal	3,251		(152)		155		(48)		3,406		(200)
Total AFS fixed maturities	$	57,189	$	(4,115)	$	14,991	$	(2,291)	$	72,180	$	(6,406)

Debt Securities, Available-for-sale, Allowance for Credit Loss

The following table presents a roll-forward of valuation allowance for expected credit losses on fixed maturities:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Available for sale
Valuation allowance for expected credit losses - beginning of period	$	193	$	78	$	169	$	14
Provision for expected credit loss	34		91		172		169
Write-offs charged against the expected credit loss	(1)		—		(5)		—
Foreign currency revaluation	—		(2)		—		(2)
Recovery of expected credit loss	(68)		(20)		(178)		(34)
Valuation allowance for expected credit losses - end of period	$	158	$	147	$	158	$	147
Held to maturity
Valuation allowance for expected credit losses - beginning of period	$	—	$	34	$	34	$	35
Provision for expected credit loss	—		—		—		1
Recovery of expected credit loss	—		(1)		(34)		(3)
Valuation allowance for expected credit losses - end of period	$	—	$	33	$	—	$	33

Debt Securities, Held-to-maturity, Allowance for Credit Loss

The following table presents a roll-forward of valuation allowance for expected credit losses on fixed maturities:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Available for sale
Valuation allowance for expected credit losses - beginning of period	$	193	$	78	$	169	$	14
Provision for expected credit loss	34		91		172		169
Write-offs charged against the expected credit loss	(1)		—		(5)		—
Foreign currency revaluation	—		(2)		—		(2)
Recovery of expected credit loss	(68)		(20)		(178)		(34)
Valuation allowance for expected credit losses - end of period	$	158	$	147	$	158	$	147
Held to maturity
Valuation allowance for expected credit losses - beginning of period	$	—	$	34	$	34	$	35
Provision for expected credit loss	—		—		—		1
Recovery of expected credit loss	—		(1)		(34)		(3)
Valuation allowance for expected credit losses - end of period	$	—	$	33	$	—	$	33

Schedule of Realized Gain (Loss)

The following table presents the components of Net realized gains (losses):

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Fixed maturities:
Gross realized gains	$	97	$	144	$	116	$	545
Gross realized losses	(185)		(331)		(457)		(1,158)
Net (provision for) recovery of expected credit losses	34		(70)		44		(133)
Impairment (1)	(16)		(22)		(60)		(111)
Total fixed maturities	(70)		(279)		(357)		(857)
Equity securities	(100)		(80)		(61)		(287)
Private equities	40		(42)		75		17
Foreign exchange	(67)		202		(122)		546
Investment and embedded derivative instruments	9		(198)		(92)		(232)
Other derivative instruments	(7)		(19)		(6)		(9)
Other (2)	92		(40)		79		(114)
Net realized gains (losses) (pre-tax)	$	(103)	$	(456)	$	(484)	$	(936)

(1)Relates to certain securities we intended to sell and securities written to market entering default.

(2)The three and nine months ended September 30, 2023 Includes a one-time realized gain of $116 million as a result of the consolidation of Huatai Group.

Gain (Loss) on Securities

Realized gains and losses from Other investments, Equity securities and Private equities from the table above include sales of securities and unrealized gains and losses from fair value changes as follows:

									Three Months Ended
									September 30
	2023								2022
(in millions of U.S. dollars)	Other Investments		Equity Securities		Private Equities		Total		Equity Securities		Private Equities		Total
Net gains (losses) recognized during the period	$	(1)	$	(100)	$	40	$	(61)	$	(80)	$	(42)	$	(122)
Less: Net gains (losses) recognized from sales of securities	—		(45)		—		(45)		(12)		—		(12)
Unrealized gains (losses) recognized for securities still held at reporting date	$	(1)	$	(55)	$	40	$	(16)	$	(68)	$	(42)	$	(110)

									Nine Months Ended
									September 30
	2023								2022
(in millions of U.S. dollars)	Other Investments		Equity Securities		Private Equities		Total		Equity Securities		Private Equities		Total
Net gains (losses) recognized during the period	$	(1)	$	(61)	$	75	$	13	$	(287)	$	17	$	(270)
Less: Net gains (losses) recognized from sales of securities	—		(48)		—		(48)		406		—		406
Unrealized gains (losses) recognized for securities still held at reporting date	$	(1)	$	(13)	$	75	$	61	$	(693)	$	17	$	(676)

Fair Value, Investments, Entities that Calculate Net Asset Value Per Share

	Expected Liquidation Period of Underlying Assets	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)		Fair Value		Maximum Future Funding Commitments		Fair Value		Maximum Future Funding Commitments
Financial	2 to 10 Years	$	1,219	$	384	$	1,074	$	505
Real assets	2 to 13 Years	2,136		526		2,166		681
Distressed	2 to 8 Years	1,160		810		1,048		755
Private credit	3 to 8 Years	319		309		215		429
Traditional	2 to 14 Years	8,222		4,280		7,424		5,025
Vintage	1 to 3 Years	78		—		55		—
Investment funds	Not Applicable	228		—		373		—
		$	13,362	$	6,309	$	12,355	$	7,395

Schedule Of Components Of Restricted Assets

The following table presents the components of restricted assets:

	September 30		December 31
(in millions of U.S. dollars)	2023		2022
Trust funds	$	8,462	$	8,120
Deposits with U.S. regulatory authorities	2,290		2,345
Deposits with non-U.S. regulatory authorities	3,366		2,959
Assets pledged under repurchase agreements	2,753		1,527
Other pledged assets	826		885
Total	$	17,697	$	15,836

Consolidated Variable Interest Entities

The following table presents the balances related to these sponsored investment products accounted for as VIEs that were recorded on our Consolidated balance sheets, including our net interest in these sponsored investment products:

	September 30
(in millions of U.S. dollars)	2023
Short-term investments	$	466
Equity securities	986
Private equities	21
Other investments	3,937
Total investments of consolidated VIEs	5,410
Cash	164
Other assets	22
Total assets of consolidated VIEs	$	5,596
Other liabilities	32
Repurchase agreements	837
Total liabilities of consolidated VIEs	869
Noncontrolling interests	3,176
Chubb's net interest in consolidated VIEs	$	1,551

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Fair value measurements (Tables)

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Financial Instruments Measured At Fair Value On A Recurring Basis

Financial instruments measured at fair value on a recurring basis, by valuation hierarchy

September 30, 2023	Level 1		Level 2		Level 3		Total
(in millions of U.S. dollars)
Assets:
Fixed maturities available for sale
U.S. Treasury / Agency	$	3,084	$	597	$	—	$	3,681
Non-U.S.	—		32,084		633		32,717
Corporate and asset-backed securities	—		38,286		2,569		40,855
Mortgage-backed securities	—		19,580		25		19,605
Municipal	—		2,908		—		2,908
	3,084		93,455		3,227		99,766
Equity securities	3,310		—		85		3,395
Short-term investments	2,546		2,906		2		5,454
Other investments (1)	569		4,364		—		4,933
Securities lending collateral	—		1,469		—		1,469
Investment derivatives	42		—		—		42
Derivatives designated as hedging instruments	—		48		—		48
Other derivative instruments	53		—		—		53
Separate account assets	5,217		89		—		5,306
Total assets measured at fair value (1)(2)	$	14,821	$	102,331	$	3,314	$	120,466
Liabilities:
Investment derivatives	$	168	$	—	$	—	$	168
Derivatives designated as hedging instruments	—		68		—		68
Other derivative instruments	—		4		—		4
Market risk benefits (3)	—		—		770		770
Total liabilities measured at fair value	$	168	$	72	$	770	$	1,010

(1)Excluded from the table above are policy loans of $603 million, and other investments of $47 million at September 30, 2023, measured using NAV as a practical expedient.

(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $13,362 million at September 30, 2023, measured using NAV as a practical expedient.

(3)Refer to Note 11 for additional information on Market risk benefits.

December 31, 2022	Level 1		Level 2		Level 3		Total
(in millions of U.S. dollars)
Assets:
Fixed maturities available for sale
U.S. Treasury / Agency	$	2,100	$	526	$	—	$	2,626
Non-U.S.	—		25,344		564		25,908
Corporate and asset-backed securities	—		34,506		2,449		36,955
Mortgage-backed securities	—		15,840		11		15,851
Municipal	—		3,880		—		3,880
	2,100		80,096		3,024		85,220
Equity securities	737		—		90		827
Short-term investments	3,108		1,849		3		4,960
Other investments (1)	552		399		—		951
Securities lending collateral	—		1,523		—		1,523
Investment derivative instruments	82		—		—		82
Derivatives designated as hedging instruments	—		17		—		17
Other derivative instruments	33		—		—		33
Separate account assets	5,101		89		—		5,190
Total assets measured at fair value (1)(2)	$	11,713	$	83,973	$	3,117	$	98,803
Liabilities:
Investment derivatives	$	139	$	—	$	—	$	139
Derivatives designated as hedging instruments	—		53		—		53
Market risk benefits (3)	—		—		800		800
Total liabilities measured at fair value	$	139	$	53	$	800	$	992

(1)Excluded from the table above are policy loans of $343 million and other investments of $47 million at December 31, 2022, measured using NAV as a practical expedient.

(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $12,355 million at December 31, 2022, measured using NAV as a practical expedient.

(3)Refer to Note 11 for additional information on Market risk benefits.

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

The following tables present a reconciliation of the beginning and ending balances of financial instruments measured at fair value using significant unobservable inputs (Level 3). Excluded from the following tables is the reconciliation of Market risk benefits, refer to Note 11 for additional information:

Three Months Ended September 30, 2023 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities		Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities
Balance, beginning of period	$	649	$	2,524	$	10	$	86	$	3
Transfers into Level 3	—		—		—		—		—
Transfers out of Level 3	(22)		(10)		—		—		—
Change in Net Unrealized Gains/Losses in OCI	(6)		6		—		—		—
Net Realized Gains/Losses	(2)		(4)		—		—		—
Purchases	46		158		16		4		—
Sales	(17)		(40)		—		(5)		(1)
Settlements	(15)		(65)		(1)		—		—
Balance, end of period	$	633	$	2,569	$	25	$	85	$	2
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(1)	$	(4)	$	—	$	—	$	—
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	(8)	$	4	$	—	$	—	$	—

Three Months Ended September 30, 2022 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities		Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities
Balance, beginning of period	$	549	$	2,261	$	19	$	81	$	9
Transfers into Level 3	—		2		—		—		—
Transfers out of Level 3	—		(4)		—		—		—
Change in Net Unrealized Gains/Losses in OCI	(34)		(16)		—		—		—
Net Realized Gains/Losses	(4)		(9)		—		3		(1)
Purchases	39		164		4		3		1
Sales	(19)		(8)		—		(4)		—
Settlements	(25)		(94)		(4)		—		(6)
Balance, end of period	$	506	$	2,296	$	19	$	83	$	3
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(1)	$	(3)	$	—	$	3	$	(1)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	(35)	$	(19)	$	—	$	—	$	—

Nine Months Ended September 30, 2023 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities		Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities
Balance, beginning of period	$	564	$	2,449	$	11	$	90	$	3
Transfers into Level 3	21		3		—		—		—
Transfers out of Level 3	(22)		(23)		—		—		—
Change in Net Unrealized Gains/Losses in OCI	5		8		—		—		(1)
Net Realized Gains/Losses	(3)		(7)		—		(6)		—
Purchases	151		481		16		15		3
Sales	(52)		(70)		—		(14)		(3)
Settlements	(31)		(272)		(2)		—		—
Balance, end of period	$	633	$	2,569	$	25	$	85	$	2
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(1)	$	(6)	$	—	$	(6)	$	—
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	1	$	2	$	—	$	—	$	—

Nine Months Ended September 30, 2022 (in millions of U.S. dollars)	Available-for-Sale Debt Securities						Equity securities		Short-term investments
	Non-U.S.		Corporate and asset- backed securities		Mortgage-backed securities
Balance, beginning of period	$	633	$	2,049	$	26	$	77	$	7
Transfers into Level 3	23		41		—		1		—
Transfers out of Level 3	(23)		(97)		(5)		—		—
Change in Net Unrealized Gains/Losses in OCI	(88)		(68)		—		—		—
Net Realized Gains/Losses	(6)		(9)		—		7		(1)
Purchases	108		658		4		6		8
Sales	(44)		(59)		—		(8)		—
Settlements	(97)		(219)		(6)		—		(11)
Balance, end of period	$	506	$	2,296	$	19	$	83	$	3
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet date	$	(3)	$	(4)	$	—	$	6	$	(1)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet date	$	(89)	$	(71)	$	—	$	—	$	—

Carrying Values And Fair Values Of Financial Instruments Not Measured At Fair Value

The following tables present fair value, by valuation hierarchy, and carrying value of the financial instruments not measured at fair value:

September 30, 2023	Fair Value								Net Carrying Value
(in millions of U.S. dollars)	Level 1		Level 2		Level 3		Total
Assets:
Private debt held-for-investment	$	—	$	—	$	2,389	$	2,389	$	2,401
Total assets	$	—	$	—	$	2,389	$	2,389	$	2,401
Liabilities:
Repurchase agreements	$	—	$	2,617	$	—	$	2,617	$	2,617
Short-term debt	—		688		—		688		700
Long-term debt	—		11,627		—		11,627		13,736
Trust preferred securities	—		362		—		362		308
Total liabilities	$	—	$	15,294	$	—	$	15,294	$	17,361

Private debt held-for-investment is related to Huatai and its consolidation. The fair value of Private debt held-for-investment is derived using a discounted cash flow approach, which includes an evaluation of forecasted contractual cash flows and yield curve information, among other loan characteristics and assumptions. These assumptions are derived from internal and third party sources. Since the valuation is derived from model-based techniques, Private debt held-for-investment is classified within Level 3 of the valuation hierarchy.

December 31, 2022	Fair Value								Net Carrying Value
(in millions of U.S. dollars)	Level 1		Level 2		Level 3		Total
Assets:
Fixed maturities held to maturity
U.S. Treasury / Agency	$	1,299	$	71	$	—	$	1,370	$	1,417
Non-U.S.	—		1,054		—		1,054		1,136
Corporate and asset-backed securities	—		1,580		—		1,580		1,705
Mortgage-backed securities	—		1,351		—		1,351		1,455
Municipal	—		3,084		—		3,084		3,135
Total assets	$	1,299	$	7,140	$	—	$	8,439	$	8,848
Liabilities:
Repurchase agreements	$	—	$	1,419	$	—	$	1,419	$	1,419
Short-term debt	—		473		—		473		475
Long-term debt	—		12,495		—		12,495		14,402
Trust preferred securities	—		383		—		383		308
Total liabilities	$	—	$	14,770	$	—	$	14,770	$	16,604

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Reinsurance (Tables)

9 Months Ended

Sep. 30, 2023

Reinsurance Disclosures [Abstract]

schedule of reinsurance recoverable on ceded insurance

	September 30, 2023				December 31, 2022
(in millions of U.S. dollars)	Net Reinsurance Recoverable (1)		Valuation allowance		Net Reinsurance Recoverable (1)		Valuation allowance
Reinsurance recoverable on unpaid losses and loss expenses	$	17,808	$	318	$	17,086	$	289
Reinsurance recoverable on paid losses and loss expenses	1,942		52		1,773		62
Reinsurance recoverable on losses and loss expenses	$	19,750	$	370	$	18,859	$	351
Reinsurance recoverable on policy benefits	$	315	$	1	$	302	$	4

(1)Net of valuation allowance for uncollectible reinsurance.

Reinsurance Recoverable, Allowance for Credit Loss [Table Text Block]

The following table presents a roll-forward of valuation allowance for uncollectible reinsurance related to Reinsurance recoverable on loss and loss expenses:

	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023		2022
Valuation allowance for uncollectible reinsurance - beginning of period	$	351	$	329
Provision for uncollectible reinsurance	27		30
Write-offs charged against the valuation allowance	(8)		(4)
Foreign exchange revaluation	—		(3)
Valuation allowance for uncollectible reinsurance - end of period	$	370	$	352

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Deferred acquisition costs (Tables)

9 Months Ended

Sep. 30, 2023

Deferred Policy Acquisition Costs Disclosures [Abstract]

Deferred Policy Acquisition Costs

The following tables present a roll-forward of deferred acquisitions costs on long-duration contracts included in the Life Insurance segment:

	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Term Life		Universal Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	320	$	776	$	395	$	902	$	121	$	2,514
Capitalizations	118		85		102		392		25		722
Amortization expense	(74)		(57)		(16)		(100)		(15)		(262)
Other (including foreign exchange)	8		(20)		7		(13)		(4)		(22)
Balance - end of period	$	372	$	784	$	488	$	1,181	$	127	$	2,952
Overseas General Insurance segment excluded from table											621
Total deferred acquisition costs on long-duration contracts											$	3,573

	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Term Life		Universal Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	246	$	771	$	334	$	745	$	108	$	2,204
Capitalizations	111		95		46		166		39		457
Amortization expense	(56)		(55)		(14)		(72)		(16)		(213)
Other (including foreign exchange)	(2)		(50)		(16)		(20)		(14)		(102)
Balance - end of period	$	299	$	761	$	350	$	819	$	117	$	2,346
Overseas General Insurance segment excluded from table											633
Total deferred acquisition costs on long-duration contracts											$	2,979

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Goodwill and Value of business acquired (Tables)

9 Months Ended

Sep. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill roll-forward by business segment

The following table presents a roll-forward of Goodwill by segment:

(in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Chubb Consolidated
Balance at December 31, 2022	$	6,945	$	2,230	$	134	$	4,605	$	371	$	1,943	$	16,228
Consolidation of Huatai Group (1)	—		—		—		562		—		2,832		3,394
Foreign exchange revaluation and other	—		—		—		44		—		(112)		(68)
Balance at September 30, 2023	$	6,945	$	2,230	$	134	$	5,211	$	371	$	4,663	$	19,554

(1)Includes $1.0 billion attributable to noncontrolling interests.

Schedule of Changes in VOBA

The following table presents a roll-forward of VOBA:

	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023
Balance, beginning of period	$	3,702
Consolidation of Huatai Group	309
Amortization of VOBA (1)	(235)
Foreign exchange revaluation and other	(101)
Balance, end of period	$	3,675

(1)Recognized in Policy acquisition costs in the Consolidated statements of operations.

Schedule of Expected Amortization of VOBA

The following table presents, as of September 30, 2023, the expected estimated pre-tax amortization expense related to VOBA at current foreign currency rates, for the fourth quarter of 2023 and for the next five years:

For the Years Ending December 31 (in millions of U.S. dollars)	Total amortization of VOBA
Fourth quarter of 2023	$	67
2024	270
2025	230
2026	202
2027	181
2028	165
Total	$	1,115

Schedule of Intangible Assets and Goodwill

Other intangible assets that are subject to amortization principally relate to agency distribution relationships, renewal rights, and patents. Other intangible assets that are not subject to amortization principally relate to trademarks. For other intangible assets related to the consolidation of Huatai, refer to Note 2.

(in millions of U.S. dollars)	September 30 2023		December 31 2022
Subject to amortization	$	3,350	$	2,459
Not subject to amortization	3,494		2,982
Total	$	6,844	$	5,441

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The following table presents, as of September 30, 2023, the expected pre-tax amortization expense of purchased intangibles, at current foreign currency exchange rates, for the fourth quarter of 2023 and for the next five years:

For the Years Ending December 31 (in millions of U.S. dollars)	Total amortization of purchased intangibles		Amortization of Huatai UPR intangible asset (1)		Amortization of Huatai land use rights (2)		Total amortization
Fourth quarter of 2023	$	84	$	16	$	3	$	103
2024	312		30		12		354
2025	286		16		12		314
2026	269		7		12		288
2027	249		3		13		265
2028	240		—		13		253
Total	$	1,440	$	72	$	65	$	1,577

(1)Recognized in Policy acquisition costs in the Consolidated statements of operations.

(2)Recognized in Other (income) expense in the Consolidated statements of operations.

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Unpaid losses and loss expenses (Tables)

9 Months Ended

Sep. 30, 2023

Liability for Claims and Claims Adjustment Expense [Abstract]

Schedule of Unpaid Losses And Loss Expenses Roll Forward [Table Text Block]

The following table presents a reconciliation of beginning and ending Unpaid losses and loss expenses:

	Nine Months Ended
	September 30
	2023		2022
(in millions of U.S. dollars)			As Adjusted
Gross unpaid losses and loss expenses – beginning of period	$	75,747	$	72,330
Reinsurance recoverable on unpaid losses – beginning of period (1)	(17,086)		(16,132)
Net unpaid losses and loss expenses – beginning of period	58,661		56,198
Net losses and loss expenses incurred in respect of losses occurring in:
Current year	18,604		17,755
Prior years (2)	(667)		(922)
Total	17,937		16,833
Net losses and loss expenses paid in respect of losses occurring in:
Current year	4,853		4,511
Prior years	10,158		9,217
Total	15,011		13,728
Consolidation of Huatai Group	405		—
Foreign currency revaluation and other	(95)		(1,280)
Net unpaid losses and loss expenses – end of period	61,897		58,023
Reinsurance recoverable on unpaid losses (1)	17,808		17,313
Gross unpaid losses and loss expenses – end of period	$	79,705	$	75,336

(1)    Net of valuation allowance for uncollectible reinsurance.

(2)    Relates to prior period loss reserve development only and excludes prior period development related to reinstatement premiums, expense adjustments, earned premiums, and development on international A&H lines totaling $71 million and $213 million for the nine months ended September 30, 2023 and 2022, respectively.

Prior Period Development, by Segment [Table Text Block]

The following table summarizes (favorable) and adverse PPD by segment:

	Three Months Ended September 30						Nine Months Ended September 30
(in millions of U.S. dollars)	Long-tail		Short-tail		Total		Long-tail		Short-tail		Total
2023
North America Commercial P&C Insurance	$	107	$	(191)	$	(84)	$	(23)	$	(279)	$	(302)
North America Personal P&C Insurance	—		(119)		(119)		—		(135)		(135)
North America Agricultural Insurance	—		(9)		(9)		—		(12)		(12)
Overseas General Insurance	(52)		3		(49)		(52)		(201)		(253)
Global Reinsurance	—		—		—		7		(32)		(25)
Corporate	61		—		61		131		—		131
Total	$	116	$	(316)	$	(200)	$	63	$	(659)	$	(596)
2022
North America Commercial P&C Insurance	$	(29)	$	(137)	$	(166)	$	(315)	$	(246)	$	(561)
North America Personal P&C Insurance	—		(133)		(133)		—		(187)		(187)
North America Agricultural Insurance	—		9		9		—		(17)		(17)
Overseas General Insurance	(5)		—		(5)		(5)		(233)		(238)
Global Reinsurance	—		—		—		(7)		29		22
Corporate	73		—		73		272		—		272
Total	$	39	$	(261)	$	(222)	$	(55)	$	(654)	$	(709)

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Future policy benefits (Tables)

9 Months Ended

Sep. 30, 2023

Liability for Future Policy Benefits Activity [Abstract]

Liability for Future Policy Benefit, Activity

The following tables present a roll-forward of the liability for future policy benefits included in the Life Insurance segment:

Present Value of Expected Net Premiums	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	818	$	2,301	$	9,863	$	42	$	13,024
Beginning balance at original discount rate	879		2,354		10,409		43		13,685
Effect of changes in cash flow assumptions	35		40		(811)		2		(734)
Effect of actual variances from expected experience	(13)		6		(120)		—		(127)
Adjusted beginning of period balance	901		2,400		9,478		45		12,824
Consolidation of Huatai Group	3		1,690		145		12		1,850
Issuances	90		274		1,066		5		1,435
Interest accrual	45		62		421		1		529
Net premiums collected (1)	(127)		(375)		(998)		(15)		(1,515)
Other (including foreign exchange)	(9)		(56)		(212)		18		(259)
Ending balance at original discount rate	903		3,995		9,900		66		14,864
Effect of changes in discount rate assumptions	(69)		(62)		(497)		(1)		(629)
Balance – end of period	$	834	$	3,933	$	9,403	$	65	$	14,235

(1)Net premiums collected represent the portion of gross premiums collected from policyholders that is used to fund expected benefit.

Present Value of Expected Future Policy Benefits	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	1,427	$	6,048	$	14,206	$	239	$	21,920
Beginning balance at original discount rate	1,555		6,225		15,022		250		23,052
Effect of changes in cash flow assumptions	31		44		(848)		3		(770)
Effect of actual variances from expected experience	(10)		12		(114)		—		(112)
Adjusted beginning of period balance	1,576		6,281		14,060		253		22,170
Consolidation of Huatai Group	17		3,659		163		298		4,137
Issuances	90		276		1,065		5		1,436
Interest accrual	54		176		514		6		750
Benefits payments	(119)		(212)		(1,065)		(8)		(1,404)
Other (including foreign exchange)	92		22		(628)		178		(336)
Ending balance at original discount rate	1,710		10,202		14,109		732		26,753
Effect of changes in discount rate assumptions	(152)		(274)		(790)		(11)		(1,227)
Balance – end of period	$	1,558	$	9,928	$	13,319	$	721	$	25,526

	September 30, 2023
Liability for Future Policy Benefits	Life Insurance								Overseas General Insurance		Chubb Consolidated
(in millions of U.S. dollars, except for years)	Term Life		Whole Life		A&H		Other		A&H		Total
Net liability for future policy benefits	$	724	$	5,995	$	3,916	$	656	$	718	$	12,009
Deferred profit liability	223		707		156		14		—		1,100
Net liability for future policy benefits, per consolidated balance sheet	947		6,702		4,072		670		718		13,109
Less: Reinsurance recoverable on future policy benefits	111		47		103		21		33		315
Net liability for future policy benefits, after reinsurance recoverable	$	836	$	6,655	$	3,969	$	649	$	685	$	12,794
Weighted-average duration (years)	10.2		26.5		10.3		15.1		4.9		18.7

Present Value of Expected Net Premiums	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	422	$	1,341	$	2,520	$	30	$	4,313
Beginning balance at original discount rate	397		1,243		2,323		28		3,991
Effect of changes in cash flow assumptions	—		(3)		(29)		—		(32)
Effect of actuarial variances from expected experience	(31)		12		(120)		—		(139)
Adjusted beginning of period balance	366		1,252		2,174		28		3,820
Acquisition of Cigna	445		1,078		8,191		23		9,737
Issuances	95		155		348		3		601
Interest accrual	45		37		184		1		267
Net premiums collected (1)	(93)		(156)		(445)		(9)		(703)
Other (including foreign exchange)	(46)		(102)		(487)		(4)		(639)
Ending balance at original discount rate	812		2,264		9,965		42		13,083
Effect of changes in discount rate assumptions	(59)		(95)		(531)		(1)		(686)
Balance – end of period	$	753	$	2,169	$	9,434	$	41	$	12,397

(1)Net premiums collected represent the portion of gross premiums collected from policyholders that is used to fund expected benefit.

Present Value of Expected Future Policy Benefits	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Term Life		Whole Life		A&H		Other		Total
Balance – beginning of period	$	921	$	4,785	$	4,939	$	130	$	10,775
Beginning balance at original discount rate	858		3,833		4,589		122		9,402
Effect of changes in cash flow assumptions	(5)		(3)		(41)		11		(38)
Effect of actuarial variances from expected experience	(32)		14		(126)		—		(144)
Adjusted beginning of period balance	821		3,844		4,422		133		9,220
Acquisition of Cigna	668		2,267		10,542		106		13,583
Issuances	100		155		348		3		606
Interest accrual	52		123		242		3		420
Benefits payments	(82)		(151)		(469)		(2)		(704)
Other (including foreign exchange)	(112)		(207)		(651)		(102)		(1,072)
Ending balance at original discount rate	1,447		6,031		14,434		141		22,053
Effect of changes in discount rate assumptions	(126)		(308)		(790)		(16)		(1,240)
Balance – end of period	$	1,321	$	5,723	$	13,644	$	125	$	20,813

	September 30, 2022
Liability for Future Policy Benefits	Life Insurance								Overseas General Insurance		Chubb Consolidated
(in millions of U.S. dollars, except for years)	Term Life		Whole Life		A&H		Other		A&H		Total
Net liability for future policy benefits	$	568	$	3,554	$	4,210	$	84	$	735	$	9,151
Deferred profit liability	172		450		125		8		—		755
Net liability for future policy benefits, per consolidated balance sheet	740		4,004		4,335		92		735		9,906
Less: Reinsurance recoverable on future policy benefits	111		56		107		—		38		312
Net liability for future policy benefits, after reinsurance recoverable	$	629	$	3,948	$	4,228	$	92	$	697	$	9,594
Weighted-average duration (years)	9.0		24.7		11.0		13.5		5.1		16.2

Undiscounted expected gross premiums and expected future policy benefit payments

The following table presents the amount of undiscounted expected gross premiums and expected future policy benefit payments included in the Life Insurance segment:

	September 30		September 30
(in millions of U.S. dollars)	2023		2022
Term Life
Undiscounted expected future benefit payments	$	2,492	$	2,189
Undiscounted expected future gross premiums	$	2,884	$	2,503
Discounted expected future benefit payments	$	1,558	$	1,321
Discounted expected future gross premiums	$	1,910	$	1,682
Whole Life
Undiscounted expected future benefit payments	$	23,457	$	15,631
Undiscounted expected future gross premiums	$	9,478	$	6,654
Discounted expected future benefit payments	$	9,928	$	5,723
Discounted expected future gross premiums	$	7,654	$	5,173
A&H
Undiscounted expected future benefit payments	$	23,168	$	23,873
Undiscounted expected future gross premiums	$	34,055	$	34,659
Discounted expected future benefit payments	$	13,319	$	13,644
Discounted expected future gross premiums	$	20,604	$	20,193
Other
Undiscounted expected future benefit payments	$	977	$	265
Undiscounted expected future gross premiums	$	103	$	102
Discounted expected future benefit payments	$	721	$	125
Discounted expected future gross premiums	$	92	$	92

Gross premiums and interest accretion recognized in statement of operations

The following table presents the amount of revenue and interest recognized in the statement of operations:

	Gross Premiums or Assessments				Interest Accretion
	Nine Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Life Insurance
Term Life	$	511	$	361	$	9	$	7
Whole Life	858		411		114		86
A&H	2,171		1,226		93		58
Other	54		71		5		2
Overseas General Insurance
A&H	1,175		1,075		—		—
Total	$	4,769	$	3,144	$	221	$	153

Weighted-average interests

The following table presents the weighted-average interest rates:

	Interest Accretion Rate				Current Discount Rate
	September 30				September 30
	2023		2022		2023		2022
Life Insurance
Term Life	2.9	%	2.6	%	6.0	%	6.1	%
Whole Life	3.2	%	3.9	%	4.7	%	5.5	%
A&H	3.7	%	3.6	%	6.7	%	6.1	%
Other	2.6	%	3.7	%	4.3	%	6.2	%

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Policyholders' account balances (Tables)

9 Months Ended

Sep. 30, 2023

Policyholder Account Balance [Abstract]

Policyholder Account Balances

The following tables present a roll-forward of policyholders' account balances:

	Nine Months Ended September 30, 2023
(in millions of U.S. dollars)	Universal Life		Other		Total
Balance – beginning of period	$	1,719	$	1,421	$	3,140
Consolidation of Huatai Group	602		3,412		4,014
Premiums received	275		228		503
Policy charges (1)	(135)		(8)		(143)
Surrenders and withdrawals	(69)		(113)		(182)
Benefit payments	(6)		(81)		(87)
Interest credited	39		43		82
Other (including foreign exchange)	(42)		(107)		(149)
Balance, end of period	$	2,383	$	4,795	$	7,178

	Nine Months Ended September 30, 2022
(in millions of U.S. dollars)	Universal Life		Other		Total
Balance – beginning of period	$	1,612	$	1,154	$	2,766
Acquisition of Cigna	10		345		355
Premiums received	292		55		347
Policy charges (1)	(141)		(8)		(149)
Surrenders and withdrawals	(55)		(39)		(94)
Benefit payments	(3)		(15)		(18)
Interest credited	30		25		55
Other (including foreign exchange)	(69)		(185)		(254)
Balance, end of period	$	1,676	$	1,332	$	3,008

(1)Contracts included in the policyholder account balances are generally charged a premium and/or monthly assessments on the basis of the account balance.

	September 30
	2023						2022
(in millions of U.S. dollars, except for percentages)	Universal Life			Other			Universal Life			Other
Weighted-average crediting rate	3.8		%	2.1		%	3.7		%	2.6		%
Net amount at risk (1)	$	10,493		$	1,675		$	10,116		$	1,503
Cash Surrender Value	$	1,596		$	3,655		$	934		$	1,280

(1)For those guarantees of benefits that are payable in the event of death, the net amount at risk is defined as the current guaranteed minimum death benefit in excess of the current account balance at the balance sheet date.

Policyholder Account Balance, Guaranteed Minimum Crediting Rates

Universal Life

	September 30, 2023
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	3	$	—	$	56	$	563	$	622
2.01% – 4.00%	472		377		558		333		1,740
Greater than 4.00%	21		—		—		—		21
Total	$	496	$	377	$	614	$	896	$	2,383

	September 30, 2022
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	3	$	—	$	59	$	505	$	567
2.01% – 4.00%	456		394		228		—		1,078
Greater than 4.00%	31		—		—		—		31
Total	$	490	$	394	$	287	$	505	$	1,676

Other policyholders' account balances

	September 30, 2023
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	1,328	$	—	$	1,719	$	799	$	3,846
2.01% – 4.00%	112		487		27		—		626
Greater than 4.00%	323		—		—		—		323
Total	$	1,763	$	487	$	1,746	$	799	$	4,795

	September 30, 2022
(in millions of U.S. dollars)	At Guaranteed Minimum		1 Basis Point - 50 Basis Points Above		51 Basis Points - 150 Basis Points Above		Greater Than 150 Basis Points Above		Total
Guaranteed minimum crediting rates
Up to 2.00%	$	411	$	—	$	191	$	424	$	1,026
2.01% – 4.00%	—		—		—		—		—
Greater than 4.00%	306		—		—		—		306
Total	$	717	$	—	$	191	$	424	$	1,332

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Market risk benefits (Tables)

9 Months Ended

Sep. 30, 2023

Market Risk Benefit [Abstract]

Market Risk Benefit, Activity

The following table presents a roll-forward of MRB:

	Nine Months Ended September 30
(in millions of U.S. dollars)	2023		2022
Balance – beginning of period	$	800	$	812
Balance, beginning of period, before effect of changes in the instrument-specific credit risk	776		755
Interest rate changes	(117)		(561)
Effect of changes in equity markets	(69)		633
Effect of changes in volatilities	51		14
Effect of changes in future expected policyholder behavior	89		40
Effect of timing and all other	19		(29)
Balance, end of period, before effect of changes in the instrument-specific credit risk	$	749	$	852
Effect of changes in the instrument-specific credit risk	21		9
Balance – end of period	$	770	$	861
Weighted-average age of policyholders (years)	73		73
Net amount at risk	$	2,138	$	2,885

Schedule Of Significant Unobservable Inputs Used In Level 3 Liability Valuations

For MRB, Chubb estimates fair value using an internal valuation model which includes a number of factors including interest rates, equity markets, credit risk, current account value, market volatility, expected annuitization rates and other policyholder behavior, and changes in policyholder mortality. All reinsurance treaties contain claim limits, which are also factored into the valuation model.

	Valuation Technique	Significant Unobservable Inputs	September 30, 2023			September 30, 2022
			Ranges	Weighted Average(1)		Ranges	Weighted Average(1)
MRB (1)	Actuarial model	Lapse rate	0.5% – 30%	4.0	%	0.5% – 30.4%	3.8	%
		Annuitization rate	0% – 100%	4.8	%	0% – 100%	4.6	%

(1)The weighted-average lapse and annuitization rates are determined by weighting each treaty's rates by the MRB contract's fair value.

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Separate accounts (Tables)

9 Months Ended

Sep. 30, 2023

Separate Accounts Disclosure [Abstract]

Fair Value, Separate Account Investment

The following table presents the aggregate fair value of Separate account assets, by major security type:

	September 30		December 31
(in millions of U.S. dollars)	2023		2022
Cash and cash equivalents	$	88	$	141
Mutual funds	5,129		4,960
Fixed maturities	89		89
Total	$	5,306	$	5,190

Separate Account, Liability

The following table presents a roll-forward of separate account liabilities:

	Nine Months Ended
	September 30
(in millions of U.S. dollars)	2023		2022
Balance – beginning of period	$	5,190	$	5,560
Acquisition of Cigna	—		301
Premiums and deposits	724		1,147
Policy charges	(103)		(93)
Surrenders and withdrawals	(407)		(304)
Benefit payments	(291)		(289)
Investment performance	382		(978)
Other (including foreign exchange)	(189)		(453)
Balance – end of period	$	5,306	$	4,891
Cash surrender value (1)	$	5,285	$	4,771

(1) Cash surrender value represents the amount of the contract holder's account balances distributable at the balance sheet date less certain surrender charges.

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Commitments, contingencies, and guarantees (Tables)

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Balance Sheet Locations, Fair Values In An Asset Or (Liability) Position, And Notional Values/Payment Provisions Of Derivative Instruments

The following table presents the balance sheet location, fair value of derivative instruments in an asset or (liability) position, and notional value/payment provision of our derivative instruments:

				September 30, 2023						December 31, 2022
	Consolidated Balance Sheet Location	Fair Value				Notional Value/ Payment Provision		Fair Value				Notional Value/ Payment Provision
(in millions of U.S. dollars)		Derivative Asset		Derivative (Liability)				Derivative Asset		Derivative (Liability)
Investment and embedded derivatives not designated as hedging instruments:
Foreign currency forward contracts	OA / (AP)	$	15	$	(147)	$	3,711	$	64	$	(115)	$	4,134
Options/Futures contracts on notes and bonds	OA / (AP)	27		(21)		2,150		18		(24)		1,511
Convertible securities (1)	FM AFS / ES	53		—		61		30		—		37
		$	95	$	(168)	$	5,922	$	112	$	(139)	$	5,682
Other derivative instruments:
Futures contracts on equities (2)	OA / (AP)	$	48	$	—	$	1,119	$	33	$	—	$	939
Other	OA / (AP)	5		(4)		368		—		—		—
		$	53	$	(4)	$	1,487	$	33	$	—	$	939
Derivatives designated as hedging instruments:
Cross-currency swaps - fair value hedges	OA / (AP)	$	48	$	—	$	1,609	$	17	$	—	$	1,595
Cross-currency swaps - net investment hedges	OA / (AP)	—		(68)		1,594		—		(53)		1,604
		$	48	$	(68)	$	3,203	$	17	$	(53)	$	3,199

(1)Includes fair value of embedded derivatives.

(2)Related to MRB book of business.

Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location

The following table presents pre-tax gains (losses) recognized in OCI and reclassified into earnings for fair value hedges:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Gain/(loss) recognized in OCI	$	(17)	$	(94)	$	23	$	(94)
Net realized gain/(loss) reclassified from OCI	(51)		(32)		(20)		(32)
Interest expense reclassified from OCI	(4)		—		(12)		—
OCI gain/(loss) after reclassifications	$	38	$	(62)	$	55	$	(62)

Schedule of Net Investment Hedges, Statements of Financial Performance and Financial Position, Location

The following table presents pre-tax gains (losses) recognized in OCI and reclassified into earnings for net investment hedges:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Gain/(loss) recognized in OCI	$	(20)	$	64	$	(8)	$	64
Interest income reclassified from OCI	3		—		10		—
OCI gain/(loss) after reclassifications	$	(23)	$	64	$	(18)	$	64

Net Realized Gains (Losses) Of Derivative Instrument Activity In Consolidated Statement Of Operations

The following table presents net realized gains (losses) related to derivative instrument activity in the Consolidated statements of operations:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Investment and embedded derivative instruments:
Foreign currency forward contracts	$	(17)	$	(247)	$	(95)	$	(515)
All other futures contracts, options, and equities	29		49		5		285
Convertible securities (1)	(3)		—		(2)		(2)
Total investment and embedded derivative instruments	$	9	$	(198)	$	(92)	$	(232)
Other derivative instruments:
Futures contracts on equities (2)	$	52	$	54	$	(80)	$	240
Other	(7)		(19)		(6)		(9)
Total other derivative instruments	$	45	$	35	$	(86)	$	231
	$	54	$	(163)	$	(178)	$	(1)

(1)Includes embedded derivatives.

(2)Related to MRB book of business.

Transfer of Certain Financial Assets Accounted for as Secured Borrowings

The following table presents the carrying value of collateral held under securities lending agreements by investment category and remaining contractual maturity of the underlying agreements:

	Remaining contractual maturity
	September 30, 2023		December 31, 2022
(in millions of U.S. dollars)	Overnight and Continuous
Collateral held under securities lending agreements:
Cash	$	762	$	820
U.S. Treasury / Agency	81		72
Non-U.S.	555		604
Corporate and asset-backed securities	47		27
Municipal	6		—
Equity securities	18		—
	$	1,469	$	1,523
Gross amount of recognized liability for securities lending payable	$	1,469	$	1,523

The following table presents the carrying value of collateral pledged under repurchase agreements by investment category and remaining contractual maturity of the underlying agreements:

	Remaining contractual maturity
	September 30, 2023								December 31, 2022
	Up to 30 Days		30-90 Days		Greater than 90 Days		Total		Up to 30 Days		30-90 Days		Total
(in millions of U.S. dollars)
Collateral pledged under repurchase agreements:
Cash	$	—	$	—	$	46	$	46	$	12	$	—	$	12
Non-U.S.	1,138		—		—		$	1,138	—		—		$	—
U.S. Treasury / Agency	—		103		—		103		—		101		101
Mortgage-backed securities	50		507		909		1,466		921		493		1,414
	$	1,188	$	610	$	955	$	2,753	$	933	$	594	$	1,527
Gross amount of recognized liabilities for repurchase agreements							$	2,617					$	1,419
Difference (1)							$	136					$	108

(1)Per the repurchase agreements, the amount of collateral posted is required to exceed the amount of gross liability.

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Shareholders' Equity (Tables)

9 Months Ended

Sep. 30, 2023

Stockholders' Equity Note [Abstract]

Dividends Declared

The following table presents dividend distributions per Common Share in Swiss francs (CHF) and U.S. dollars (USD):

	Three Months Ended						Nine Months Ended
	September 30						September 30
	2023			2022			2023			2022
	CHF	USD		CHF	USD		CHF	USD		CHF	USD
Total dividend distributions per common share	0.75	$	0.86	0.78	$	0.83	2.29	$	2.55	2.32	$	2.46

Share Repurchase Program [Table Text Block]

The following table presents repurchases of Chubb's Common Shares conducted in a series of open market transactions under the Board authorizations:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars, except share data)	2023		2022		2023		2022
Number of shares repurchased	2,949,900		3,676,528		8,634,600		14,022,728
Cost of shares repurchased	$	606	$	685	$	1,758	$	2,815
Repurchase authorization remaining at end of period	$	4,398	$	1,816	$	4,398	$	1,816

Schedule of Accumulated Other Comprehensive Income (Loss)

The following table presents changes in accumulated other comprehensive income (loss):

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars)			As Adjusted				As Adjusted
Accumulated other comprehensive income (loss) (AOCI)
Net unrealized appreciation (depreciation) on investments
Balance – beginning of period, net of tax	$	(6,809)	$	(5,713)	$	(7,279)	$	2,256
Change in period, before reclassification from AOCI (before tax)	(2,240)		(3,324)		(1,935)		(12,898)
Amounts reclassified from AOCI (before tax)	70		279		357		857
Change in period, before tax	(2,170)		(3,045)		(1,578)		(12,041)
Income tax (expense) benefit	29		147		(93)		1,174
Total other comprehensive loss	(2,141)		(2,898)		(1,671)		(10,867)
Noncontrolling interests, net of tax	3		—		3		—
Balance – end of period, net of tax	(8,953)		(8,611)		(8,953)		(8,611)
Current discount rate on liability for future policy benefits
Balance – beginning of period, net of tax	(247)		(427)		(75)		(1,399)
Change in period, before tax	683		479		497		1,546
Income tax expense	(35)		(57)		(21)		(152)
Total other comprehensive income	648		422		476		1,394
Noncontrolling interests, net of tax	(3)		—		(3)		—
Balance – end of period, net of tax	404		(5)		404		(5)

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars)			As Adjusted				As Adjusted
Accumulated other comprehensive income (loss) (AOCI) - continued
Instrument-specific credit risk on market risk benefits
Balance – beginning of period, net of tax	(16)		(17)		(24)		(57)
Change in period, before and net of tax	(5)		8		3		48
Total other comprehensive income (loss)	(5)		8		3		48
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	(21)		(9)		(21)		(9)
Cumulative foreign currency translation adjustment
Balance – beginning of period, net of tax	(2,920)		(2,768)		(2,966)		(2,114)
Change in period, before reclassification from AOCI (before tax)	(314)		(942)		(269)		(1,631)
Amounts reclassified from AOCI (before tax)	(3)		—		(10)		—
Change in period, before tax	(317)		(942)		(279)		(1,631)
Income tax benefit	13		7		21		42
Total other comprehensive loss	(304)		(935)		(258)		(1,589)
Noncontrolling interests, net of tax	(76)		—		(76)		—
Balance – end of period, net of tax	(3,148)		(3,703)		(3,148)		(3,703)
Fair value hedging instruments
Balance – beginning of period, net of tax	(53)		—		(66)		—
Change in period, before reclassification from AOCI (before tax)	(17)		(94)		23		(94)
Amounts reclassified from AOCI (before tax)	55		32		32		32
Change in period, before tax	38		(62)		55		(62)
Income tax (expense) benefit	(7)		13		(11)		13
Total other comprehensive income (loss)	31		(49)		44		(49)
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	(22)		(49)		(22)		(49)
Postretirement benefit liability adjustment
Balance – beginning of period, net of tax	223		259		225		240
Change in period, before tax	(1)		3		(3)		27
Income tax expense	—		(1)		—		(6)
Total other comprehensive income (loss)	(1)		2		(3)		21
Noncontrolling interests, net of tax	—		—		—		—
Balance – end of period, net of tax	222		261		222		261
Accumulated other comprehensive income (loss)	$	(11,518)	$	(12,116)	$	(11,518)	$	(12,116)

Reclassification out of Accumulated Other Comprehensive Income

The following table presents reclassifications from accumulated other comprehensive income (loss) to the Consolidated statements of operations:

	Three Months Ended				Nine Months Ended				Consolidated Statement of Operations Location
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Fixed maturities available for sale	$	(70)	$	(279)	$	(357)	$	(857)	Net realized gains (losses)
Income tax benefit	25		39		59		138		Income tax expense
	$	(45)	$	(240)	$	(298)	$	(719)	Net income
Cumulative foreign currency translation adjustment
Cross-currency swaps	$	3	$	—	$	10	$	—	Interest expense
Income tax expense	(1)		—		(2)		—		Income tax expense
	$	2	$	—	$	8	$	—	Net income
Net gains (losses) of fair value hedging instruments
Cross-currency swaps	$	(51)	$	(32)	$	(20)	$	(32)	Net realized gains (losses)
Cross-currency swaps	(4)		—		(12)		—		Interest expense
Income tax benefit	12		7		7		7		Income tax expense
	$	(43)	$	(25)	$	(25)	$	(25)	Net income
Total amounts reclassified from AOCI	$	(86)	$	(265)	$	(315)	$	(744)

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Postretirement benefits (Tables)

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

The components of net pension and other postretirement benefit costs (benefits) reflected in Net income in the Consolidated statements of operations were as follows:

	Pension Benefit Plans								Other Postretirement Benefit Plans
	2023				2022				2023		2022
Three Months Ended September 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost	$	—	$	2	$	—	$	1	$	—	$	—
Non-service cost (benefit):
Interest cost	35		9		21		5		1		—
Expected return on plan assets	(56)		(13)		(70)		(11)		—		—
Amortization of net actuarial loss	—		—		—		—		(1)		—
Amortization of prior service cost	—		—		—		—		(1)		—
Settlements	3		—		—		—		—		—
Total non-service cost (benefit)	(18)		(4)		(49)		(6)		(1)		—
Net periodic benefit cost (benefit)	$	(18)	$	(2)	$	(49)	$	(5)	$	(1)	$	—

	Pension Benefit Plans								Other Postretirement Benefit Plans
	2023				2022				2023		2022
Nine Months Ended September 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost:	$	—	$	6	$	—	$	3	$	—	$	—
Non-service cost (benefit):
Interest cost	103		27		64		17		2		1
Expected return on plan assets	(168)		(38)		(212)		(33)		(2)		(1)
Amortization of net actuarial loss	—		—		—		—		(1)		—
Amortization of prior service cost	—		—		—		—		(1)		—
Settlements	3		—		—		—		—		—
Total non-service cost (benefit)	(62)		(11)		(148)		(16)		(2)		—
Net periodic benefit cost (benefit)	$	(62)	$	(5)	$	(148)	$	(13)	$	(2)	$	—

The line items in which the service cost and non-service cost (benefit) components of net periodic cost (benefit) are included in the Consolidated statements of operations were as follows:

	Pension Benefit Plans				Other Postretirement Benefit Plans
Three Months Ended September 30	2023		2022		2023		2022
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	—	$	—	$	—
Administrative expenses	2		1		—		—
Total service cost	2		1		—		—
Non-service cost (benefit):
Losses and loss expenses	(1)		(5)		—		—
Administrative expenses	(21)		(50)		(1)		—
Total non-service cost (benefit)	(22)		(55)		(1)		—
Net periodic benefit cost (benefit)	$	(20)	$	(54)	$	(1)	$	—

	Pension Benefit Plans				Other Postretirement Benefit Plans
Nine Months Ended September 30	2023		2022		2023		2022
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	—	$	—	$	—
Administrative expenses	6		3		—		—
Total service cost	6		3		—		—
Non-service cost (benefit):
Losses and loss expenses	(6)		(15)		—		—
Administrative expenses	(67)		(149)		(2)		—
Total non-service cost (benefit)	(73)		(164)		(2)		—
Net periodic benefit cost (benefit)	$	(67)	$	(161)	$	(2)	$	—

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Other Income and Expense (Tables)

9 Months Ended

Sep. 30, 2023

Other Income and Expenses [Abstract]

Schedule of Other Nonoperating Income (Expense)

	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions of U.S. dollars)	2023		2022		2023		2022
Equity in net income (loss) of partially-owned entities	$	150	$	(111)	$	610	$	180
Gains (losses) from fair value changes in separate account assets (1)	(19)		(67)		(56)		(116)
Asset management and performance fee revenue	55		—		55		—
Asset management and performance fee expense	(33)		—		(33)		—
Federal excise and capital taxes	(6)		(6)		(17)		(15)
Other	7		(18)		(9)		(40)
Total	$	154	$	(202)	$	550	$	9

(1)     Related to gains (losses) from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP.

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Segment information (Tables)

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Operations By Segment

The following tables present the Statement of Operations by segment:

For the Three Months Ended September 30, 2023 (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated
Net premiums written	$	5,132	$	1,527	$	1,521	$	3,211	$	261	$	1,452	$	—	$	—	$	13,104
Net premiums earned	4,735		1,407		1,540		3,311		239		1,442		—		—		12,674
Losses and loss expenses	3,025		900		1,356		1,635		116		20		61		(7)		7,106
Policy benefits	—		—		—		91		—		866		—		(19)		938
Policy acquisition costs	640		287		76		827		69		279		—		—		2,178
Administrative expenses	323		84		3		327		9		216		98		—		1,060
Underwriting income (loss)	747		136		105		431		45		61		(159)		26		1,392
Net investment income	780		94		12		248		47		211		14		(92)		1,314
Other (income) expense	6		2		—		(10)		—		(28)		(51)		(73)		(154)
Amortization expense of    purchased intangibles	—		3		6		19		—		12		44		—		84
Segment income (loss)	$	1,521	$	225	$	111	$	670	$	92	$	288	$	(138)	$	7	$	2,776
Net realized gains (losses)													(96)		(7)		(103)
Market risk benefits gains (losses)													(32)		—		(32)
Interest expense													174		—		174
Cigna integration expenses													14		—		14
Income tax expense													413		—		413
Net income (loss)													(867)		—		2,040
Net loss attributable to noncontrolling interests													(3)		—		(3)
Net income (loss) attributable to Chubb													$	(864)	$	—	$	2,043

For the Three Months Ended September 30, 2022 (As Adjusted) (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated
Net premiums written	$	4,722	$	1,392	$	1,723	$	2,645	$	265	$	1,265	$	—	$	—	$	12,012
Net premiums earned	4,283		1,334		1,673		2,741		255		1,244		—		—		11,530
Losses and loss expenses	3,036		857		1,444		1,333		311		27		74		(19)		7,063
Policy benefits	—		—		—		108		—		666		—		(67)		707
Policy acquisition costs	583		274		68		720		59		266		—		—		1,970
Administrative expenses	272		71		3		264		8		174		91		—		883
Underwriting income (loss)	392		132		158		316		(123)		111		(165)		86		907
Net investment income	589		76		9		151		71		147		5		(69)		979
Other (income) expense	6		1		1		(2)		—		4		194		(2)		202
Amortization expense of    purchased intangibles	—		2		7		12		—		2		46		—		69
Segment income (loss)	$	975	$	205	$	159	$	457	$	(52)	$	252	$	(400)	$	19	$	1,615
Net realized gains (losses)													(437)		(19)		(456)
Market risk benefits gains (losses)													69		—		69
Interest expense													150		—		150
Cigna integration expenses													23		—		23
Income tax expense													263		—		263
Net income (loss)													$	(1,204)	$	—	$	792

For the Nine Months Ended September 30, 2023 (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated
Net premiums written	$	14,575	$	4,404	$	2,581	$	9,359	$	831	$	4,015	$	—	$	—	$	35,765
Net premiums earned	13,710		4,084		2,334		9,005		720		3,962		—		—		33,815
Losses and loss expenses	8,625		2,634		2,003		4,139		319		87		133		(3)		17,937
Policy benefits	—		—		—		338		—		2,283		—		(56)		2,565
Policy acquisition costs	1,867		836		128		2,286		196		829		—		—		6,142
Administrative expenses	934		247		9		899		27		553		290		—		2,959
Underwriting income (loss)	2,284		367		194		1,343		178		210		(423)		59		4,212
Net investment income	2,204		262		43		636		144		525		28		(276)		3,566
Other (income) expense	18		2		—		(29)		(1)		(69)		(251)		(220)		(550)
Amortization expense of    purchased intangibles	—		8		19		52		—		18		129		—		226
Segment income (loss)	$	4,470	$	619	$	218	$	1,956	$	323	$	786	$	(273)	$	3	$	8,102
Net realized gains (losses)													(481)		(3)		(484)
Market risk benefits gains (losses)													(154)		—		(154)
Interest expense													499		—		499
Cigna integration expenses													51		—		51
Income tax expense													1,189		—		1,189
Net income (loss)													$	(2,647)	$	—	$	5,725
Net loss attributable to noncontrolling interests													(3)		—		(3)
Net income (loss) attributable to Chubb													$	(2,644)	$	—	$	5,728

For the Nine Months Ended September 30, 2022 (As Adjusted) (in millions of U.S. dollars)	North America Commercial P&C Insurance		North America Personal P&C Insurance		North America Agricultural Insurance		Overseas General Insurance		Global Reinsurance		Life Insurance		Corporate		Segment Measure Reclass		Chubb Consolidated
Net premiums written	$	13,426	$	3,998	$	2,523	$	8,364	$	780	$	2,403	$	—	$	—	$	31,494
Net premiums earned	12,645		3,852		2,217		8,065		712		2,325		—		—		29,816
Losses and loss expenses	7,979		2,343		1,830		3,772		565		78		275		(9)		16,833
Policy benefits	—		—		—		282		—		1,275		—		(116)		1,441
Policy acquisition costs	1,701		792		111		2,096		178		537		—		—		5,415
Administrative expenses	814		213		4		811		27		346		264		—		2,479
Underwriting income (loss)	2,151		504		272		1,104		(58)		89		(539)		125		3,648
Net investment income (loss)	1,600		199		23		460		232		359		(4)		(180)		2,689
Other (income) expense	12		3		1		3		1		(38)		73		(64)		(9)
Amortization expense of    purchased intangibles	—		7		20		40		—		7		137		—		211
Segment income (loss)	$	3,739	$	693	$	274	$	1,521	$	173	$	479	$	(753)	$	9	$	6,135
Net realized gains (losses)													(927)		(9)		(936)
Market risk benefits gains (losses)													85		—		85
Interest expense													416		—		416
Cigna integration expenses													26		—		26
Income tax expense													907		—		907
Net income (loss)													$	(2,944)	$	—	$	3,935

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Earnings per share (Tables)

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Schedule Of Earnings Per Share, Basic And Diluted

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2023		2022		2023		2022
(in millions of U.S. dollars, except share and per share data)			As Adjusted				As Adjusted
Numerator:
Net income	$	2,040	$	792	$	5,725	$	3,935
Net loss attributable to noncontrolling interests	(3)		—		(3)		—
Net income attributable to Chubb	$	2,043	$	792	$	5,728	$	3,935
Denominator:
Denominator for basic earnings per share attributable to Chubb:
Weighted-average shares outstanding	409,505,454		416,542,101		412,076,470		421,290,032
Denominator for diluted earnings per share attributable to Chubb:
Share-based compensation plans	3,100,505		3,076,855		3,288,940		3,733,449
Weighted-average shares outstanding and assumed conversions	412,605,959		419,618,956		415,365,410		425,023,481
Basic earnings per share attributable to Chubb	$	4.99	$	1.90	$	13.90	$	9.34
Diluted earnings per share attributable to Chubb	$	4.95	$	1.89	$	13.79	$	9.26
Potential anti-dilutive share conversions	2,562,206		1,693,502		2,330,821		1,377,784

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General and significant accounting policies (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Jul. 01, 2023	Jun. 30, 2023	Dec. 31, 2022	Jan. 01, 2021
General and significant accounting policies [Line Items]
Retained earnings	$ 51,510			$ 48,305
Accumulated other comprehensive income (loss) (AOCI)	$ (11,518)			(10,185)
Huatai Group
General and significant accounting policies [Line Items]
Equity Method Investment, Ownership Percentage			64.20%
Huatai Group
General and significant accounting policies [Line Items]
Subsidiary, Ownership Percentage, Parent	69.60%	69.60%
Subsidiary, Ownership Percentage, Noncontrolling Owner		30.40%
Effect of Modified Retrospective Application Accounting Standards Update 2018-12
General and significant accounting policies [Line Items]
Retained earnings				29	$ 52
Accumulated other comprehensive income (loss) (AOCI)				$ 8	$ 1,800

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General and significant accounting policies (ASU 2018-12 Transition) (Details) - USD ($) $ in Millions			3 Months Ended			9 Months Ended
		Jan. 01, 2021	Sep. 30, 2023		Sep. 30, 2022	Sep. 30, 2023		Sep. 30, 2022	Dec. 31, 2022		Dec. 31, 2021	Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reinsurance recoverable on losses and loss expenses			$ (19,750)	[1]		$ (19,750)	[1]		$ (18,859)	[2]
Reinsurance recoverable on policy benefits	[1],[2]		(315)			(315)			(302)
Deferred policy acquisition costs			6,856			6,856			6,031
Value of business acquired			(3,675)			(3,675)			(3,702)
Prepaid reinsurance premiums			(3,514)			(3,514)			(3,136)
Investments in partially-owned insurance companies			(188)			(188)			(2,507)
Unpaid losses and loss expenses			(79,705)		$ (75,336)	(79,705)		$ (75,336)	(75,747)		$ (72,330)
Unearned premiums			(22,684)			(22,684)			(19,713)
Future policy benefits		$ 7,652	13,109		9,906	13,109		9,906	10,476
Market risk benefits			770			770			800
Insurance and reinsurance balances payable			(8,481)			(8,481)			(7,780)
Deferred tax liabilities			(759)			(759)			(377)
Retained earnings			(51,510)			(51,510)			(48,305)
Accumulated other comprehensive income (loss) (AOCI)			(11,518)			(11,518)			(10,185)
Net premiums written			(13,104)		(12,012)	(35,765)		(31,494)
Net premiums earned			(12,674)		(11,530)	(33,815)		(29,816)
Net realized (gains) losses			103		456	484		936
Market risk benefits gains (losses)			32		(69)	154		(85)
Losses and loss expenses			(7,106)		(7,063)	(17,937)		(16,833)
Policy benefits			(938)		(707)	(2,565)		(1,441)
Policy acquisition costs			(2,178)		(1,970)	(6,142)		(5,415)
Other (income) expense			(154)		202	(550)		(9)
Income Tax (Expense) Benefit			(413)		(263)	(1,189)		(907)
Net income (loss)			(2,043)		(792)	(5,728)		(3,935)
Current discount rate on future policy benefits			683		479	497		1,546
Instrument-specific credit risk on market risk benefits			(5)		8	3		48
Other Comprehensive Income (Loss), Tax			0		109	(104)		1,071
Comprehensive income (loss)			268		(2,658)	4,316		(7,107)
Comprehensive income (loss)			347		(2,658)	4,395		(7,107)
Net Cash Provided by (Used in) Operating Activities						9,446		8,600
Net Cash Provided by (Used in) Financing Activities						(3,325)		(2,730)
Liability for Future Policy Benefit, Remeasurement Gain (Loss)			25		17	21		11
Equity in net income of partially-owned entities			(150)		111	(610)		(180)
Increase (Decrease) in Deferred Income Taxes						39		55
Unpaid losses and loss expenses						3,270		4,805
Unearned premiums						2,085		1,904
Future policy benefits						570		117
Accounts payable, accrued expenses, and other liabilities						(392)		337
Reinsurance recoverable						(388)		(1,850)
Increase (Decrease) in Deferred Policy Acquisition Costs						(832)		(355)
Increase (Decrease) in Other Operating Assets and Liabilities, Net						796		(95)
Net cash flows used for investing activities						(5,434)		(5,202)
Segment Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net premiums written			(1,452)		(1,265)	(4,015)		(2,403)
Net premiums earned			(1,442)		(1,244)	(3,962)		(2,325)
Losses and loss expenses			(20)		(27)	(87)		(78)
Policy benefits			(866)		(666)	(2,283)		(1,275)
Policy acquisition costs			(279)		(266)	(829)		(537)
Other (income) expense			(28)		4	(69)		(38)
Overseas General Insurance [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net premiums written			(3,211)		(2,645)	(9,359)		(8,364)
Net premiums earned			(3,311)		(2,741)	(9,005)		(8,065)
Losses and loss expenses			(1,635)		(1,333)	(4,139)		(3,772)
Policy benefits			(91)		(108)	(338)		(282)
Policy acquisition costs			(827)		(720)	(2,286)		(2,096)
Other (income) expense			(10)		(2)	(29)		3
Term Life Insurance | Segment Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred policy acquisition costs			372		299	372		299	320		246
Future policy benefits		454	947		740	947		740
Policy acquisition costs						(74)		(56)
Whole Life Insurance | Segment Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred policy acquisition costs			488		350	488		350	395		334
Future policy benefits		3,767	6,702		4,004	6,702		4,004
Policy acquisition costs						(16)		(14)
Accident and Health Insurance Product Line [Member] | Segment Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred policy acquisition costs			1,181		819	1,181		819	902		745
Future policy benefits		2,569	4,072		4,335	4,072		4,335
Policy acquisition costs						(100)		(72)
Accident and Health Insurance Product Line [Member] | Overseas General Insurance [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Future policy benefits		773	718		735	718		735
Insurance, Other | Segment Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred policy acquisition costs			127		117	127		117	121		$ 108
Future policy benefits		89	$ 670		92	670		92
Policy acquisition costs						$ (15)		(16)
Variable Annuity
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Market risk benefits		1,163
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reinsurance recoverable on losses and loss expenses									(18,901)
Reinsurance recoverable on policy benefits									(303)
Deferred policy acquisition costs									5,788
Value of business acquired									(3,596)
Prepaid reinsurance premiums									(3,140)
Investments in partially-owned insurance companies									(2,877)
Unpaid losses and loss expenses									(76,323)
Unearned premiums									(20,360)
Future policy benefits									10,120			$ 6,065	[3]
Market risk benefits									0
Insurance and reinsurance balances payable									(7,795)
Deferred tax liabilities									(292)
Retained earnings									(48,334)
Accumulated other comprehensive income (loss) (AOCI)									(10,193)
Net premiums written					(12,020)			(31,521)
Net premiums earned					(11,535)			(29,838)
Net realized (gains) losses					384			787
Market risk benefits gains (losses)					0			0
Losses and loss expenses					(7,279)			(17,474)
Policy benefits					(486)			(790)
Policy acquisition costs					(1,975)			(5,451)
Other (income) expense					188			(21)
Income Tax (Expense) Benefit					(265)			(913)
Net income (loss)					(812)			(4,001)
Current discount rate on future policy benefits					0			0
Instrument-specific credit risk on market risk benefits					0			0
Other Comprehensive Income (Loss), Tax					(165)			(1,222)
Comprehensive income (loss)					(3,093)			(8,529)
Net Cash Provided by (Used in) Operating Activities								8,592
Net Cash Provided by (Used in) Financing Activities								(2,722)
Previously Reported | Term Life Insurance | Segment Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Future policy benefits	[3]											391
Previously Reported | Whole Life Insurance | Segment Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Future policy benefits	[3]											2,578
Previously Reported | Accident and Health Insurance Product Line [Member] | Segment Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Future policy benefits	[3]											2,270
Previously Reported | Accident and Health Insurance Product Line [Member] | Overseas General Insurance [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Future policy benefits	[3]											754
Previously Reported | Insurance, Other | Segment Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Future policy benefits	[3]											72
Previously Reported | Variable Annuity
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Market risk benefits												$ 1,138
Effect of Modified Retrospective Application Accounting Standards Update 2018-12
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reinsurance recoverable on losses and loss expenses									(42)
Reinsurance recoverable on policy benefits									(1)
Deferred policy acquisition costs									243
Value of business acquired									(106)
Prepaid reinsurance premiums									(4)
Investments in partially-owned insurance companies									(370)
Unpaid losses and loss expenses									(576)
Unearned premiums									(647)
Future policy benefits									356
Market risk benefits									800
Insurance and reinsurance balances payable									(15)
Deferred tax liabilities									(85)
Retained earnings		(52)							(29)
Accumulated other comprehensive income (loss) (AOCI)		1,800							$ 8
Net premiums written					(8)			(27)
Net premiums earned					(5)			(22)
Net realized (gains) losses					(72)			(149)
Market risk benefits gains (losses)					69			85
Losses and loss expenses					(216)			(641)
Policy benefits					221			651
Policy acquisition costs					(5)			(36)
Other (income) expense					14			12
Income Tax (Expense) Benefit					(2)			(6)
Net income (loss)					(20)			(66)
Current discount rate on future policy benefits					479			1,546
Instrument-specific credit risk on market risk benefits					8			48
Other Comprehensive Income (Loss), Tax					56			151
Comprehensive income (loss)					$ 435			1,422
Net Cash Provided by (Used in) Operating Activities								8
Net Cash Provided by (Used in) Financing Activities								$ (8)
Liability for Future Policy Benefit, Remeasurement Gain (Loss)		1,587
AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, before Tax		77
Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Term Life Insurance | Segment Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Liability for Future Policy Benefit, Remeasurement Gain (Loss)		63
Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Whole Life Insurance | Segment Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Liability for Future Policy Benefit, Remeasurement Gain (Loss)		1,189
Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Accident and Health Insurance Product Line [Member] | Segment Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Liability for Future Policy Benefit, Remeasurement Gain (Loss)		299
Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Accident and Health Insurance Product Line [Member] | Overseas General Insurance [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Liability for Future Policy Benefit, Remeasurement Gain (Loss)		19
Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Insurance, Other | Segment Life [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Liability for Future Policy Benefit, Remeasurement Gain (Loss)		17
Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Guaranteed Minimum Death Benefit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Market risk benefits gains (losses)		59
OCI, Market Risk Benefit, Instrument-Specific Credit Risk, Gain (Loss), before Adjustments and Tax	[4]	$ 84

[1] Net of valuation allowance for uncollectible reinsurance.

[2] Net of valuation allowance for uncollectible reinsurance.

[3] Includes future policy benefits previously included within Unpaid losses on the pre-adoption Consolidated balance sheets, primarily certain international A&H business, and excludes deferred profit liability and certain guaranteed minimum death benefits reclassified to Market risk benefits on the post adoption period balance sheets.

[4] Includes $77 million of instrument-specific credit risk allocated from retained earnings to AOCI.

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Acquisitions (Narrative) (Details) - USD ($) $ in Millions				9 Months Ended
	Oct. 01, 2023	Jul. 01, 2023	Jul. 01, 2022	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Goodwill				$ 19,554		$ 16,228
Other intangible assets				6,844		5,441
Value of business acquired				3,675		3,702
Repurchase agreements (refer to Note 3 for balances associated with VIEs)				$ 2,617		$ 1,419
Huatai Group
Business Acquisition [Line Items]
Subsidiary, Ownership Percentage, Parent		69.60%		69.60%
Additional 5.4 percent ownership interest obtained in subsidiary		5.40%
Subsidiary, Ownership Percentage, Noncontrolling Owner		30.40%
Outstanding 14.1 percent additional ownership interest agreed on				14.10%
Outstanding 3.0 percent ownership interest agreed on requiring regulatory approval				3.00%
Huatai Group | Subsequent Event [Member]
Business Acquisition [Line Items]
Additional 2.5 percent ownership interest obtained in subsidiary	2.50%
Huatai Group
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage					64.20%
Cigna's Life Insurance Business in Asia-Pacific Markets [Member]
Business Acquisition [Line Items]
Goodwill			$ 1,177
Other intangible assets			309
Value of business acquired			$ 3,633
Business Acquisition, Effective Date of Acquisition			Jul. 01, 2022
Payments to Acquire Businesses, Gross			$ 5,400
Repurchase agreements (refer to Note 3 for balances associated with VIEs)			$ 2,000
Huatai Group
Business Acquisition [Line Items]
Payments to Acquire Additional Interest in Subsidiaries		$ 318
Deposits previously paid on additional ownership interest agreed on				$ 416
Outstanding payment to be made on additional ownership interest agreed on				$ 433
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value		4,100
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain		744
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Loss		17
Write-off of Accumulated AOCI Loss Balance, Equity Method Invesmtent		611
Business combination, Realized Gain (Loss) from Write-off of AOCI		(628)
Goodwill		3,394
Other intangible assets		1,655
Value of business acquired		309
Repurchase agreements (refer to Note 3 for balances associated with VIEs)		$ 1,269
Huatai Group | Subsequent Event [Member]
Business Acquisition [Line Items]
Deposits previously paid on additional ownership interest obtained	$ 146

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Acquisitions (Schedule of recognized identifiable assets acquired and liabilities assumed) (Details) - USD ($) $ in Millions		Sep. 30, 2023		Jul. 01, 2023	Dec. 31, 2022		Sep. 30, 2022	Jul. 01, 2022	Dec. 31, 2021	Jan. 01, 2021
Business Acquisition [Line Items]
Accrued investment income		$ 1,040			$ 941
Insurance and reinsurance balances receivable		13,907			11,933
Reinsurance recoverable on losses and loss expenses		19,750	[1]		18,859	[2]
Reinsurance recoverable on policy benefits	[1],[2]	315			302
Value of business acquired		3,675			3,702
Other assets		7,591			7,546
Total assets		222,748			199,017
Unpaid losses and loss expenses		79,705			75,747		$ 75,336		$ 72,330
Unearned premiums		22,684			19,713
Future policy benefits		13,109			10,476		9,906			$ 7,652
Policyholders' account balances		7,178			3,140		3,008		$ 2,766
Insurance and reinsurance balances payable		8,481			7,780
Accounts payable, accrued expenses, and other liabilities		8,422			7,148
Deferred tax liabilities		759			377
Repurchase agreements (refer to Note 3 for balances associated with VIEs)		2,617			1,419
Total liabilities		165,244			148,498
Net acquired assets, including goodwill		52,373			50,519		47,675
Equity, Attributable to Noncontrolling Interest		5,131			0
Total shareholders' equity		57,504			50,519		$ 47,675
Total liabilities and shareholders’ equity		$ 222,748			$ 199,017
Cigna's Life Insurance Business in Asia-Pacific Markets [Member]
Business Acquisition [Line Items]
Investments and Cash								$ 5,274
Accrued investment income								33
Insurance and reinsurance balances receivable								52
Reinsurance recoverable on losses and loss expenses								3
Reinsurance recoverable on policy benefits								85
Value of business acquired								3,633
Goodwill and intangible assets								1,486
Other assets								648
Total assets								11,214
Unpaid losses and loss expenses								12
Unearned premiums								60
Future policy benefits								3,856
Insurance and reinsurance balances payable								115
Accounts payable, accrued expenses, and other liabilities								926
Deferred tax liabilities								886
Repurchase agreements (refer to Note 3 for balances associated with VIEs)								2,000
Total liabilities								5,855
Net acquired assets, including goodwill								5,359
Total liabilities and shareholders’ equity								$ 11,214
Huatai Group
Business Acquisition [Line Items]
Investments and Cash				$ 13,346
Accrued investment income				60
Insurance and reinsurance balances receivable				277
Reinsurance recoverable on losses and loss expenses				581
Reinsurance recoverable on policy benefits				27
Value of business acquired				309
Goodwill and intangible assets				5,049
Other assets				748
Total assets				20,397
Unpaid losses and loss expenses				831
Unearned premiums				800
Future policy benefits				2,287
Policyholders' account balances				4,014
Insurance and reinsurance balances payable				644
Accounts payable, accrued expenses, and other liabilities				702
Deferred tax liabilities				232
Repurchase agreements (refer to Note 3 for balances associated with VIEs)				1,269
Total liabilities				10,779
Net acquired assets, including goodwill				4,408
Equity, Attributable to Noncontrolling Interest				5,210
Total shareholders' equity				$ 9,618

[1] Net of valuation allowance for uncollectible reinsurance.

[2] Net of valuation allowance for uncollectible reinsurance.

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Acquisitions (Acquisition operations) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Business Acquisition [Line Items]
Total revenues	$ 13,853	$ 12,122	$ 36,743	$ 31,654
Net income	2,040	792	5,725	3,935
Net loss attributable to Chubb	$ 2,043	$ 792	5,728	3,935
Huatai Group
Business Acquisition [Line Items]
Total revenues			389
Net income			(11)
Net loss attributable to Chubb			$ (9)
Cigna's Life Insurance Business in Asia-Pacific Markets [Member]
Business Acquisition [Line Items]
Total revenues				681
Net loss attributable to Chubb				$ 17

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Acquisitions (Finite-lived and indefinite-lived intangible assets acquired) (Details) - USD ($) $ in Millions	Jul. 01, 2023	Sep. 30, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization		$ 3,494	$ 2,982
Total identified intangible assets		$ 6,844	$ 5,441
Huatai Group
Finite-Lived Intangible Assets [Line Items]
Total identified intangible assets	$ 1,655
Huatai Group | Trademarks
Finite-Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization	398
Huatai Group | Asset management mutual funds
Finite-Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization	122
Huatai Group | Distribution Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets Acquired	$ 332
Finite-Lived Intangible Asset, Useful Life	20 years
Huatai Group | Asset management mutual funds
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets Acquired	$ 94
Finite-Lived Intangible Asset, Useful Life	16 years
Huatai Group | Unearned Premium Reserves Intangible Asset
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets Acquired	$ 95
Finite-Lived Intangible Asset, Useful Life	3 years
Huatai Group | Use Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets Acquired	$ 569
Finite-Lived Intangible Asset, Useful Life	31 years
Huatai Group | Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets Acquired	$ 45
Finite-Lived Intangible Asset, Useful Life	6 years

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Acquisitions (Pro forma) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Business Acquisition [Line Items]
Net premiums earned	$ 12,674	$ 11,530	$ 33,815	$ 29,816
Cigna's Life Insurance Business in Asia-Pacific Markets [Member] | Pro Forma
Business Acquisition [Line Items]
Net premiums earned		11,530		31,341
Total revenues		12,124		33,161
Business Acquisition, Pro Forma Net Income (Loss)		837		4,172
Huatai Group | Pro Forma
Business Acquisition [Line Items]
Net premiums earned	12,674	11,952	34,605	30,996
Total revenues	13,755	12,612	37,589	33,019
Business Acquisition, Pro Forma Net income (loss), Including Portion Attributable to Noncontrolling Interests	1,905	787	5,595	3,975
Business Acquisition, Pro Forma Net Income (Loss)	$ 1,912	$ 777	$ 5,587	$ 3,935

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Investments (Narrative) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Investments [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Transfer, Amount	$ 8,200,000,000
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value	7,800,000,000
Debt Securities, Held-to-Maturity, Transfer, Unrealized Gain (Loss)	428,000,000
Restricted assets in fixed maturities and short-term investments	17,505,000,000	$ 15,721,000,000
Restricted assets in cash	192,000,000	$ 115,000,000
Investments
Investments [Line Items]
Deferred Tax Assets, Valuation Allowance	$ 1,108,000,000

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Investments (Schedule Of Amortized Cost and Fair Value of Available-for-Sale Securities) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 109,355		$ 93,355
Debt Securities, Available-for-sale, Allowance for Credit Loss	(158)	$ (193)	(169)	$ (147)	$ (78)	$ (14)
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	310		174
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before tax	(9,741)		(8,140)
Available for sale, Fair Value	99,766		85,220
U.S. Treasury / Agency
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	3,944		2,792
Debt Securities, Available-for-sale, Allowance for Credit Loss	0		0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	2		5
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before tax	(265)		(171)
Available for sale, Fair Value	3,681		2,626
Non-U.S.
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	34,912		28,064
Debt Securities, Available-for-sale, Allowance for Credit Loss	(53)		(59)
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	239		108
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before tax	(2,381)		(2,205)
Available for sale, Fair Value	32,717		25,908
Corporate and asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	44,932		40,547
Debt Securities, Available-for-sale, Allowance for Credit Loss	(104)		(107)
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	61		49
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before tax	(4,034)		(3,534)
Available for sale, Fair Value	40,855		36,955
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	22,402		17,871
Debt Securities, Available-for-sale, Allowance for Credit Loss	(1)		(3)
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	6		4
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before tax	(2,802)		(2,021)
Available for sale, Fair Value	19,605		15,851
Municipal
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	3,165		4,081
Debt Securities, Available-for-sale, Allowance for Credit Loss	0		0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	2		8
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before tax	(259)		(209)
Available for sale, Fair Value	$ 2,908		$ 3,880

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Investments (Schedule Of Amortized Cost And Fair Value Of Held-to-Maturity Fixed Maturities) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss	$ 0	$ 0	$ 34	$ 33	$ 34	$ 35
Debt securities, held to maturity, net carrying value	0		8,848
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain			3
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss			(412)
Held to maturity, Fair Value	$ 0		8,439
U.S. Treasury / Agency
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss			0
Debt securities, held to maturity, net carrying value			1,417
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain			1
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss			(48)
Held to maturity, Fair Value			1,370
Non-U.S.
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss			4
Debt securities, held to maturity, net carrying value			1,136
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain			0
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss			(82)
Held to maturity, Fair Value			1,054
Corporate and asset-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss			28
Debt securities, held to maturity, net carrying value			1,705
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain			1
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss			(126)
Held to maturity, Fair Value			1,580
Mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss			1
Debt securities, held to maturity, net carrying value			1,455
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain			0
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss			(104)
Held to maturity, Fair Value			1,351
Municipal
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss			1
Debt securities, held to maturity, net carrying value			3,135
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain			1
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss			(52)
Held to maturity, Fair Value			$ 3,084

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Investments (Held-to-Maturity Credit Quality Indicator) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt Securities, Held-to-maturity	$ 8,882
Fixed Maturities Percent of Total Amortized cost	100.00%
Standard & Poor's, AAA Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt Securities, Held-to-maturity	$ 1,612
Fixed Maturities Percent of Total Amortized cost	18.00%
Standard & Poor's, AA Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt Securities, Held-to-maturity	$ 5,023
Fixed Maturities Percent of Total Amortized cost	57.00%
Standard & Poor's, A Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt Securities, Held-to-maturity	$ 1,634
Fixed Maturities Percent of Total Amortized cost	18.00%
Standard & Poor's, BBB Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt Securities, Held-to-maturity	$ 593
Fixed Maturities Percent of Total Amortized cost	7.00%
Standard & Poor's, BB Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt Securities, Held-to-maturity	$ 20
Fixed Maturities Percent of Total Amortized cost	0.00%

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Investments (Schedule Of Fixed Maturities By Contractual Maturity) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Available for sale, Due in 1 year or less, Fair Value & Net Carrying Value	$ 4,805	$ 2,962
Available for sale, Due after 1 year through 5 years, Fair Value & Net Carrying Value	31,738	24,791
Available for sale, Due after 5 years through 10 years, Fair Value & Net Carrying Value	27,452	26,679
Available for sale, Due after 10 years, Fair Value & Net Carrying Value	16,166	14,937
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value	80,161	69,369
Available for sale, Mortgage backed securities, Fair Value & Net Carrying Value	19,605	15,851
Available for sale, Fair Value	99,766	85,220
Debt securities, Held-to-maturity, maturity, allocated and single maturity date, within one year, net carrying value	0	1,015
Held to maturity, Due in 1 year or less, Fair Value	0	1,003
Held-to-maturity, after one through five years, net carrying value	0	3,658
Held to maturity, Due after 1 year through 5, Fair Value	0	3,531
Held-to-maturity, after 5 through 10 years, net carrying value	0	1,460
Held to maturity, Due after 5 years through 10 years, Fair Value	0	1,423
Held-to-maturity, after 10 years, net carrying value	0	1,260
Held to maturity, Due after 10 years, Fair Value	0	1,131
Debt securities, Held-to-maturity, maturity, allocated and single maturity date, net carrying value	0	7,393
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Fair Value	0	7,088
Held-to-maturity, MBS, net carrying value	0	1,455
Held to maturity, Mortgage backed securities, Fair Value	0	1,351
Debt securities, held to maturity, net carrying value	0	8,848
Held to maturity, Fair Value	$ 0	$ 8,439

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Investments (Aggregate Fair Value And Gross Unrealized Loss By Length Of Time Security Has Continuously Been In Unrealized Loss Position) (Details) - Fixed Maturities [Member] - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 27,035	$ 57,189
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(974)	(4,115)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	56,471	14,991
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(7,062)	(2,291)
Debt Securities, Available-for-sale, Unrealized Loss Position	83,506	72,180
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(8,036)	(6,406)
U.S. Treasury / Agency
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	1,108	2,152
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(32)	(125)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	2,449	386
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(233)	(46)
Debt Securities, Available-for-sale, Unrealized Loss Position	3,557	2,538
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(265)	(171)
Non-U.S.
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	8,591	15,538
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(280)	(1,012)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	16,631	5,490
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1,670)	(704)
Debt Securities, Available-for-sale, Unrealized Loss Position	25,222	21,028
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(1,950)	(1,716)
Corporate and asset-backed securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	10,120	25,687
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(362)	(1,793)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	22,672	4,190
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2,441)	(552)
Debt Securities, Available-for-sale, Unrealized Loss Position	32,792	29,877
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(2,803)	(2,345)
Mortgage-backed securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	5,827	10,561
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(249)	(1,033)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	13,450	4,770
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2,510)	(941)
Debt Securities, Available-for-sale, Unrealized Loss Position	19,277	15,331
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(2,759)	(1,974)
Municipal
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	1,389	3,251
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(51)	(152)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,269	155
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(208)	(48)
Debt Securities, Available-for-sale, Unrealized Loss Position	2,658	3,406
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (259)	$ (200)

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Investments (Rollforward of expected credit-losses, AFS) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Debt Securities, Available for sale, Allowance for Credit Loss	$ 158	$ 147	$ 158	$ 147	$ 193	$ 169	$ 78	$ 14
Debt Securities, Available-for-sale, Allowance for Credit Loss, Period Increase (Decrease)	34	91	172	169
Debt Securities, Available-for-sale, Allowance for Credit Loss, Writeoff	(1)	0	(5)	0
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Foreign Currency Revaluation	0	(2)	0	(2)
Debt Securities, Available-for-sale, Allowance for Credit Loss, Recovery	$ (68)	$ (20)	$ (178)	$ (34)

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Investments (Rollforward of expected credit losses HTM) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Debt Securities, Held to maturity, Allowance for Credit Loss	$ 0	$ 33	$ 0	$ 33	$ 0	$ 34	$ 34	$ 35
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Period Increase (Decrease)	0	0	0	1
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Recovery	$ 0	$ (1)	$ (34)	$ (3)

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Investments (Net Realized Gains (Losses) And Losses Included In Net Realized Gains (Losses) And Other Comprehensive Income) (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Gain (Loss) on Securities [Line Items]
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Period Increase (Decrease)		$ 34	$ 91	$ 172	$ 169
Debt Securities, Available-for-sale, Gain (Loss), Total		(70)	(279)	(357)	(857)
Net realized gains (losses)		(103)	(456)	(484)	(936)
Foreign exchange		(67)	202	(122)	546
Gain (Loss) on Derivative		54	(163)	(178)	(1)
Other	[1]	92	(40)	79	(114)
Huatai Group
Gain (Loss) on Securities [Line Items]
Other		116
Fixed Maturities [Member]
Gain (Loss) on Securities [Line Items]
Debt Securities, Available-for-Sale, Realized Gain (Loss), Excluding Other-than-temporary Impairment		97	144	116	545
Debt Securities, Available-for-Sale, Realized Loss, Excluding Other-than-temporary Impairment		(185)	(331)	(457)	(1,158)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Period Increase (Decrease)		34	(70)	44	(133)
Debt Securities, Available-For-Sale, Credit Impairment Charges Intent to Sell	[2]	(16)	(22)	(60)	(111)
Equity Securities
Gain (Loss) on Securities [Line Items]
Equity Securities, FV-NI, Realized Gain (Loss)		(100)	(80)	(61)	(287)
Other Investments
Gain (Loss) on Securities [Line Items]
Net realized gains (losses)		(1)		(1)
Alternative Investment
Gain (Loss) on Securities [Line Items]
Net realized gains (losses)		40	(42)	75	17
Other derivative instruments
Gain (Loss) on Securities [Line Items]
Gain (Loss) on Derivative		(7)	(19)	(6)	(9)
Investment and embedded derivative instruments
Gain (Loss) on Securities [Line Items]
Gain (Loss) on Derivative		$ 9	$ (198)	$ (92)	$ (232)

[1] The three and nine months ended September 30, 2023 Includes a one-time realized gain of $116 million as a result of the consolidation of Huatai Group.

[2] Relates to certain securities we intended to sell and securities written to market entering default.(2)The three and nine months ended September 30, 2023 Includes a one-time realized gain of $116 million as a result of the consolidation of Huatai Group.

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Investments Schedule of Gains and Losses on Equity and Other Investments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Gain (Loss) on Securities [Line Items]
Net realized gains (losses)	$ (103)	$ (456)	$ (484)	$ (936)
Equity Securities
Gain (Loss) on Securities [Line Items]
Equity Securities, FV-NI, Realized Gain (Loss)	(100)	(80)	(61)	(287)
Less: Net gains (losses) recognized from sales of securities	(45)	(12)	(48)	406
Unrealized Gain (Loss) on Investments	(55)	(68)	(13)	(693)
Other Investments
Gain (Loss) on Securities [Line Items]
Net realized gains (losses)	(1)		(1)
Less: Net gains (losses) recognized from sales of securities	0		0
Unrealized Gain (Loss) on Investments	(1)		(1)
Equity securities and other investments
Gain (Loss) on Securities [Line Items]
Net realized gains (losses)		(122)		(270)
Less: Net gains (losses) recognized from sales of securities		(12)		406
Unrealized Gain (Loss) on Investments		(110)		(676)
Fixed maturities trading, equity securities and other investments
Gain (Loss) on Securities [Line Items]
Net realized gains (losses)	(61)		13
Less: Net gains (losses) recognized from sales of securities	(45)		(48)
Unrealized Gain (Loss) on Investments	(16)		61
Alternative Investment
Gain (Loss) on Securities [Line Items]
Net realized gains (losses)	40	(42)	75	17
Less: Net gains (losses) recognized from sales of securities	0	0	0	0
Unrealized Gain (Loss) on Investments	$ 40	$ (42)	$ 75	$ 17

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Investments Entities that Calculate Net Asset Value Per Share (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	$ 6,309	$ 7,395
Alternative Investment	13,362	12,355
Financial [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	384	505
Alternative Investment	1,219	1,074
Real Estate Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	526	681
Alternative Investment	2,136	2,166
Distressed Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	810	755
Alternative Investment	1,160	1,048
Private Credit Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	309	429
Alternative Investment	319	215
Private Equity Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	4,280	5,025
Alternative Investment	8,222	7,424
Vintage Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	0	0
Alternative Investment	78	55
Investment Funds Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	0	0
Alternative Investment	$ 228	$ 373
Minimum | Financial [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	2 years	2 years
Minimum | Real Estate Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	2 years	2 years
Minimum | Distressed Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	2 years	2 years
Minimum | Private Credit Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	3 years	3 years
Minimum | Private Equity Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	2 years	2 years
Minimum | Vintage Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	1 year	1 year
Maximum | Financial [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	10 years	10 years
Maximum | Real Estate Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	13 years	13 years
Maximum | Distressed Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	8 years	8 years
Maximum | Private Credit Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	8 years	8 years
Maximum | Private Equity Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	14 years	14 years
Maximum | Vintage Alternative Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period	3 years	3 years

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Investments (Schedule Of Components Of Restricted Assets) (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Investments [Line Items]
Total restricted assets	$ 17,697	$ 15,836
Asset Pledged as Collateral without Right
Investments [Line Items]
Trust funds	8,462	8,120
Deposits with U.S. regulatory authorities	2,290	2,345
Deposits with non-U.S. regulatory authorities	3,366	2,959
Assets pledged under repurchase agreements	2,753	1,527
Other pledged assets	$ 826	$ 885

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Investments Variable Interest Entities Consolidated (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Other Short-Term Investments	$ 5,454	$ 4,960
Debt Securities, Available-for-Sale	99,766	85,220
Equity securities, at fair value	3,395	827
Alternative Investment	13,362	12,355
Other investments	5,583	1,341
Total investments (refer to Note 3 for balances associated with variable interest entities (VIEs))	129,961	113,551
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	2,617	1,419
Total liabilities (preliminary)	165,244	148,498
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)	5,131	0
Total cash and restricted cash shown in the Consolidated statement of cash flows	2,778	2,127	$ 2,264	$ 1,811
Other assets	7,591	7,546
Total assets (preliminary)	222,748	$ 199,017
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Other Short-Term Investments	466
Equity securities, at fair value	986
Alternative Investment	21
Other investments	3,937
Total investments (refer to Note 3 for balances associated with variable interest entities (VIEs))	5,410
Other liabilities	32
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	837
Total liabilities (preliminary)	869
Noncontrolling interests (refer to Note 3 for balances associated with VIEs)	3,176
Economic Interests in Consolidated Investment Products	1,551
Total cash and restricted cash shown in the Consolidated statement of cash flows	164
Other assets	22
Total assets (preliminary)	$ 5,596

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Fair value measurements (Financial Instruments Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Millions	Sep. 30, 2023		Dec. 31, 2022
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	$ 99,766		$ 85,220
Equity securities, at fair value	3,395		827
Other Short-Term Investments	5,454		4,960
Other investments	5,583		1,341
Securities lending collateral	1,469		1,523
Separate account assets	5,306		5,190
Market risk benefits	770		800
Alternative Investment	13,362		12,355
Investment Funds Limited Partnerships Partially Owned Investment Companies Fair Value
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Alternative Investment	13,362		12,355
Policy Loans
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Other investments	603		343
Other Investments
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Other investments	47		47
U.S. Treasury / Agency
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	3,681		2,626
Non-U.S.
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	32,717		25,908
Corporate and asset-backed securities
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	40,855		36,955
Mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	19,605		15,851
Municipal
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	2,908		3,880
Level 1 | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	3,084		2,100
Equity securities, at fair value	3,310		737
Other Short-Term Investments	2,546		3,108
Other investments	569	[1]	552	[2]
Securities lending collateral	0		0
Investment derivative instruments	42		82
Derivatives designated as hedging instruments	0		0
Other derivative instruments	53		33
Separate account assets	5,217		5,101
Total assets measured at fair value	14,821	[1]	11,713	[2]
Investment derivatives	168		139
Derivatives designated as hedging instruments	0		0
Other derivative instruments, liability	0
Market risk benefits	0	[3]	0	[4]
Total liabilities measured at fair value	168		139
Level 1 | U.S. Treasury / Agency | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	3,084		2,100
Level 1 | Non-U.S. | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	0		0
Level 1 | Corporate and asset-backed securities | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	0		0
Level 1 | Mortgage-backed securities | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	0		0
Level 1 | Municipal | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	0		0
Level 2 | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	93,455		80,096
Equity securities, at fair value	0		0
Other Short-Term Investments	2,906		1,849
Other investments	4,364	[1]	399	[2]
Securities lending collateral	1,469		1,523
Investment derivative instruments	0		0
Derivatives designated as hedging instruments	48		17
Other derivative instruments	0		0
Separate account assets	89		89
Total assets measured at fair value	102,331	[1]	83,973	[2]
Investment derivatives	0		0
Derivatives designated as hedging instruments	68		53
Other derivative instruments, liability	4
Market risk benefits	0	[3]	0	[4]
Total liabilities measured at fair value	72		53
Level 2 | U.S. Treasury / Agency | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	597		526
Level 2 | Non-U.S. | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	32,084		25,344
Level 2 | Corporate and asset-backed securities | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	38,286		34,506
Level 2 | Mortgage-backed securities | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	19,580		15,840
Level 2 | Municipal | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	2,908		3,880
Level 3 | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	3,227		3,024
Equity securities, at fair value	85		90
Other Short-Term Investments	2		3
Other investments	0	[1]	0	[2]
Securities lending collateral	0		0
Investment derivative instruments	0		0
Derivatives designated as hedging instruments	0		0
Other derivative instruments	0		0
Separate account assets	0		0
Total assets measured at fair value	3,314	[1]	3,117	[2]
Investment derivatives	0		0
Derivatives designated as hedging instruments	0		0
Other derivative instruments, liability	0
Market risk benefits	770	[3]	800	[4]
Total liabilities measured at fair value	770		800
Level 3 | U.S. Treasury / Agency | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	0		0
Level 3 | Non-U.S. | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	633		564
Level 3 | Corporate and asset-backed securities | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	2,569		2,449
Level 3 | Mortgage-backed securities | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	25		11
Level 3 | Municipal | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	0		0
Total Level 1, Level 2, and Level 3 | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	99,766		85,220
Equity securities, at fair value	3,395		827
Other Short-Term Investments	5,454		4,960
Other investments	4,933	[1]	951	[2]
Securities lending collateral	1,469		1,523
Investment derivative instruments	42		82
Derivatives designated as hedging instruments	48		17
Other derivative instruments	53		33
Separate account assets	5,306		5,190
Total assets measured at fair value	120,466	[1]	98,803	[2]
Investment derivatives	168		139
Derivatives designated as hedging instruments	68		53
Other derivative instruments, liability	4
Market risk benefits	770	[3]	800	[4]
Total liabilities measured at fair value	1,010		992
Total Level 1, Level 2, and Level 3 | U.S. Treasury / Agency | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	3,681		2,626
Total Level 1, Level 2, and Level 3 | Non-U.S. | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	32,717		25,908
Total Level 1, Level 2, and Level 3 | Corporate and asset-backed securities | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	40,855		36,955
Total Level 1, Level 2, and Level 3 | Mortgage-backed securities | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	19,605		15,851
Total Level 1, Level 2, and Level 3 | Municipal | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Debt Securities, Available-for-Sale	$ 2,908		$ 3,880

[1] Excluded from the table above are policy loans of $603 million, and other investments of $47 million at September 30, 2023, measured using NAV as a practical expedient.(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $13,362 million at September 30, 2023, measured using NAV as a practical expedient.

[2] Excluded from the table above are policy loans of $343 million and other investments of $47 million at December 31, 2022, measured using NAV as a practical expedient.(2)Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $12,355 million at December 31, 2022, measured using NAV as a practical expedient.

[3] Refer to Note 11 for additional information on Market risk benefits.

[4] Refer to Note 11 for additional information on Market risk benefits.

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Fair value measurements (Assets, Measured At Fair Value Using Significant Unobservable Inputs) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other comprehensive loss, before income tax	Other comprehensive loss, before income tax	Other comprehensive loss, before income tax	Other comprehensive loss, before income tax
Fair Value, Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Total revenues	Total revenues	Total revenues	Total revenues
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]		Total revenues	Total revenues	Total revenues
Level 3 | Equity Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance- Beginning of Period, Assets	$ 86	$ 81	$ 90	$ 77
Transfers Into Level 3, Asset	0	0	0	1
Transfers out of Level 3, Assets	0	0	0	0
Change in Net Unrealized Gains (Losses) included in OCI, Assets	0	0	0	0
Net Realized Gains/ (Losses), Assets	0	3	(6)	7
Purchases, Assets	4	3	15	6
Sales, Assets	(5)	(4)	(14)	(8)
Settlements, Assets	0	0	0	0
Balance-End of Period, Assets	85	83	85	83
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date, Assets	0	3	(6)	6
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet Date, Assets	0	0	0	0
Level 3 | Short-term Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance- Beginning of Period, Assets	3	9	3	7
Transfers Into Level 3, Asset	0	0	0	0
Transfers out of Level 3, Assets	0	0	0	0
Change in Net Unrealized Gains (Losses) included in OCI, Assets	0	0	(1)	0
Net Realized Gains/ (Losses), Assets	0	(1)	0	(1)
Purchases, Assets	0	1	3	8
Sales, Assets	(1)	0	(3)	0
Settlements, Assets	0	(6)	0	(11)
Balance-End of Period, Assets	2	3	2	3
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date, Assets	0	(1)	0	(1)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet Date, Assets	0	0	0	0
Level 3 | Available-for-Sale Debt Securities | Non-U.S.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance- Beginning of Period, Assets	649	549	564	633
Transfers Into Level 3, Asset	0	0	21	23
Transfers out of Level 3, Assets	(22)	0	(22)	(23)
Change in Net Unrealized Gains (Losses) included in OCI, Assets	(6)	(34)	5	(88)
Net Realized Gains/ (Losses), Assets	(2)	(4)	(3)	(6)
Purchases, Assets	46	39	151	108
Sales, Assets	(17)	(19)	(52)	(44)
Settlements, Assets	(15)	(25)	(31)	(97)
Balance-End of Period, Assets	633	506	633	506
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date, Assets	(1)	(1)	(1)	(3)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet Date, Assets	(8)	(35)	1	(89)
Level 3 | Available-for-Sale Debt Securities | Corporate and asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance- Beginning of Period, Assets	2,524	2,261	2,449	2,049
Transfers Into Level 3, Asset	0	2	3	41
Transfers out of Level 3, Assets	(10)	(4)	(23)	(97)
Change in Net Unrealized Gains (Losses) included in OCI, Assets	6	(16)	8	(68)
Net Realized Gains/ (Losses), Assets	(4)	(9)	(7)	(9)
Purchases, Assets	158	164	481	658
Sales, Assets	(40)	(8)	(70)	(59)
Settlements, Assets	(65)	(94)	(272)	(219)
Balance-End of Period, Assets	2,569	2,296	2,569	2,296
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date, Assets	(4)	(3)	(6)	(4)
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet Date, Assets	4	(19)	2	(71)
Level 3 | Available-for-Sale Debt Securities | Mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance- Beginning of Period, Assets	10	19	11	26
Transfers Into Level 3, Asset	0	0	0	0
Transfers out of Level 3, Assets	0	0	0	(5)
Change in Net Unrealized Gains (Losses) included in OCI, Assets	0	0	0	0
Net Realized Gains/ (Losses), Assets	0	0	0	0
Purchases, Assets	16	4	16	4
Sales, Assets	0	0	0	0
Settlements, Assets	(1)	(4)	(2)	(6)
Balance-End of Period, Assets	25	19	25	19
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date, Assets	0	0	0	0
Change in Net Unrealized Gains/Losses included in OCI at the Balance Sheet Date, Assets	$ 0	$ 0	$ 0	$ 0

XML

Fair value measurements (Carrying Values And Fair Values Of Financial Instruments Not Measured At Fair Value) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value	$ 0	$ 8,439
Private debt held-for-investment	2,401	0
Total assets (preliminary)	222,748	199,017
Debt Securities, Held-to-maturity		8,882
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	2,617	1,419
Short-term debt	700	475
Long-term debt	13,736	14,402
Total liabilities	165,244	148,498
Portion at Other than Fair Value Measurement | Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,299
Private debt held-for-investment	0
Total assets (preliminary)	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	0	0
Short-Term Debt, Fair Value	0	0
Long-term Debt, Fair Value	0	0
Trust preferred securities	0	0
Total liabilities	0	0
Portion at Other than Fair Value Measurement | Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		7,140
Private debt held-for-investment	0
Total assets (preliminary)	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	2,617	1,419
Short-Term Debt, Fair Value	688	473
Long-term Debt, Fair Value	11,627	12,495
Trust preferred securities	362	383
Total liabilities	15,294	14,770
Portion at Other than Fair Value Measurement | Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Private debt held-for-investment	2,389
Total assets (preliminary)	2,389
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	0	0
Short-Term Debt, Fair Value	0	0
Long-term Debt, Fair Value	0	0
Trust preferred securities	0	0
Total liabilities	0	0
Portion at Other than Fair Value Measurement | Total Level 1, Level 2, and Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		8,439
Private debt held-for-investment	2,389
Total assets (preliminary)	2,389
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	2,617	1,419
Short-Term Debt, Fair Value	688	473
Long-term Debt, Fair Value	11,627	12,495
Trust preferred securities	362	383
Total liabilities	15,294	14,770
Reported Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Private debt held-for-investment	2,401
Total assets (preliminary)	2,401
Debt Securities, Held-to-maturity		8,848
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	2,617	1,419
Short-term debt	700	475
Long-term debt	13,736	14,402
Trust preferred securities	308	308
Total liabilities	$ 17,361	16,604
U.S. Treasury / Agency
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,370
Debt Securities, Held-to-maturity		1,417
U.S. Treasury / Agency | Portion at Other than Fair Value Measurement | Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,299
U.S. Treasury / Agency | Portion at Other than Fair Value Measurement | Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		71
U.S. Treasury / Agency | Portion at Other than Fair Value Measurement | Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
U.S. Treasury / Agency | Portion at Other than Fair Value Measurement | Total Level 1, Level 2, and Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,370
U.S. Treasury / Agency | Reported Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Held-to-maturity		1,417
Non-U.S.
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,054
Debt Securities, Held-to-maturity		1,140
Non-U.S. | Portion at Other than Fair Value Measurement | Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Non-U.S. | Portion at Other than Fair Value Measurement | Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,054
Non-U.S. | Portion at Other than Fair Value Measurement | Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Non-U.S. | Portion at Other than Fair Value Measurement | Total Level 1, Level 2, and Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,054
Non-U.S. | Reported Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Held-to-maturity		1,136
Corporate and asset-backed securities
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,580
Debt Securities, Held-to-maturity		1,733
Corporate and asset-backed securities | Portion at Other than Fair Value Measurement | Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Corporate and asset-backed securities | Portion at Other than Fair Value Measurement | Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,580
Corporate and asset-backed securities | Portion at Other than Fair Value Measurement | Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Corporate and asset-backed securities | Portion at Other than Fair Value Measurement | Total Level 1, Level 2, and Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,580
Corporate and asset-backed securities | Reported Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Held-to-maturity		1,705
Mortgage-backed securities
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,351
Debt Securities, Held-to-maturity		1,456
Mortgage-backed securities | Portion at Other than Fair Value Measurement | Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Mortgage-backed securities | Portion at Other than Fair Value Measurement | Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,351
Mortgage-backed securities | Portion at Other than Fair Value Measurement | Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Mortgage-backed securities | Portion at Other than Fair Value Measurement | Total Level 1, Level 2, and Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		1,351
Mortgage-backed securities | Reported Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Held-to-maturity		1,455
Municipal
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		3,084
Debt Securities, Held-to-maturity		3,136
Municipal | Portion at Other than Fair Value Measurement | Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Municipal | Portion at Other than Fair Value Measurement | Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		3,084
Municipal | Portion at Other than Fair Value Measurement | Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		0
Municipal | Portion at Other than Fair Value Measurement | Total Level 1, Level 2, and Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fixed maturities, held-to-maturity, fair value		3,084
Municipal | Reported Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Debt Securities, Held-to-maturity		$ 3,135

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Reinsurance (Reinsurance Recoverable on Ceded Reinsurance) (Details) - USD ($) $ in Millions		Sep. 30, 2023		Dec. 31, 2022		Sep. 30, 2022	Dec. 31, 2021
Reinsurance Disclosures [Abstract]
Reinsurance recoverable on unpaid losses and loss expenses	[1]	$ 17,808		$ 17,086		$ 17,313	$ 16,132
Reinsurance recoverable on paid losses and loss expenses	[1],[2]	1,942		1,773
Reinsurance recoverable on losses and loss expenses		19,750	[1]	18,859	[2]
Reinsurance recoverable on policy benefits	[1],[2]	315		302
Reinsurance Recoverables on Unpaid Losses, Allowance		318		289
Reinsurance Recoverables on Paid Losses, Allowance		52		62
Reinsurance Recoverable, Allowance for Credit Loss, Total		370		351		$ 352	$ 329
Reinsurance Recoverables on Future Policy Benefits, Allowance		$ 1		$ 4

[1] Net of valuation allowance for uncollectible reinsurance.

[2] Net of valuation allowance for uncollectible reinsurance.

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Reinsurance, Allowance (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Reinsurance Disclosures [Abstract]
Valuation allowance for uncollectible reinsurance - beginning of period	$ 351	$ 329
Provision for uncollectible reinsurance	27	30
Write-offs charged against the valuation allowance	(8)	(4)
Foreign exchange revaluation	0	(3)
Valuation allowance for uncollectible reinsurance - end of period	$ 370	$ 352

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Deferred acquisition costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	$ 6,856		$ 6,856
Balance – beginning of period			6,031
Amortization expense	(2,178)	$ (1,970)	(6,142)	$ (5,415)
Balance - end of period	6,856		6,856
Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Amortization expense	(279)	(266)	(829)	(537)
Overseas General Insurance [Member]
Deferred Policy Acquisition Cost [Line Items]
Amortization expense	(827)	(720)	(2,286)	(2,096)
Short-Duration Insurance, Other
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	3,283	2,809	3,283	2,809
Balance - end of period	3,283	2,809	3,283	2,809
Long-Duration Insurance, Other
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	3,573	2,979	3,573	2,979
Balance - end of period	3,573	2,979	3,573	2,979
Long-Duration Insurance, Other | Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	2,952	2,346	2,952	2,346
Balance – beginning of period			2,514	2,204
Capitalizations			722	457
Amortization expense			(262)	(213)
Other (including foreign exchange)			(22)	(102)
Balance - end of period	2,952	2,346	2,952	2,346
Long-Duration Insurance, Other | Overseas General Insurance [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	621	633	621	633
Balance - end of period	621	633	621	633
Term Life Insurance | Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	372	299	372	299
Balance – beginning of period			320	246
Capitalizations			118	111
Amortization expense			(74)	(56)
Other (including foreign exchange)			8	(2)
Balance - end of period	372	299	372	299
Universal Life | Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	784	761	784	761
Balance – beginning of period			776	771
Capitalizations			85	95
Amortization expense			(57)	(55)
Other (including foreign exchange)			(20)	(50)
Balance - end of period	784	761	784	761
Whole Life Insurance | Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	488	350	488	350
Balance – beginning of period			395	334
Capitalizations			102	46
Amortization expense			(16)	(14)
Other (including foreign exchange)			7	(16)
Balance - end of period	488	350	488	350
Accident and Health Insurance Product Line [Member] | Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	1,181	819	1,181	819
Balance – beginning of period			902	745
Capitalizations			392	166
Amortization expense			(100)	(72)
Other (including foreign exchange)			(13)	(20)
Balance - end of period	1,181	819	1,181	819
Insurance, Other | Segment Life [Member]
Deferred Policy Acquisition Cost [Line Items]
Deferred Policy Acquisition Cost	127	117	127	117
Balance – beginning of period			121	108
Capitalizations			25	39
Amortization expense			(15)	(16)
Other (including foreign exchange)			(4)	(14)
Balance - end of period	$ 127	$ 117	$ 127	$ 117

XML

Goodwill and Value of business acquired (Roll-forward of Goodwill by Business Segment) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 16,228
Goodwill, Acquired During Period	3,394	[1]
Foreign exchange revaluation and other	(68)
Balance at end of period	19,554
goodwill attributable to noncontrolling interests	1,000
North America Commercial P&C Insurance [Member]
Goodwill [Roll Forward]
Balance at beginning of period	6,945
Foreign exchange revaluation and other	0
Balance at end of period	6,945
North America Personal P&C Insurance [Member]
Goodwill [Roll Forward]
Balance at beginning of period	2,230
Foreign exchange revaluation and other	0
Balance at end of period	2,230
North America Agricultural Insurance [Member]
Goodwill [Roll Forward]
Balance at beginning of period	134
Foreign exchange revaluation and other	0
Balance at end of period	134
Overseas General Insurance [Member]
Goodwill [Roll Forward]
Balance at beginning of period	4,605
Foreign exchange revaluation and other	44
Balance at end of period	5,211
Global Reinsurance [Member]
Goodwill [Roll Forward]
Balance at beginning of period	371
Foreign exchange revaluation and other	0
Balance at end of period	371
Segment Life [Member]
Goodwill [Roll Forward]
Balance at beginning of period	1,943
Foreign exchange revaluation and other	(112)
Balance at end of period	4,663
Huatai Group | North America Commercial P&C Insurance [Member]
Goodwill [Roll Forward]
Goodwill, Acquired During Period	0	[1]
Huatai Group | North America Personal P&C Insurance [Member]
Goodwill [Roll Forward]
Goodwill, Acquired During Period	0	[1]
Huatai Group | North America Agricultural Insurance [Member]
Goodwill [Roll Forward]
Goodwill, Acquired During Period	0	[1]
Huatai Group | Overseas General Insurance [Member]
Goodwill [Roll Forward]
Goodwill, Acquired During Period	562	[1]
Huatai Group | Global Reinsurance [Member]
Goodwill [Roll Forward]
Goodwill, Acquired During Period	0	[1]
Huatai Group | Segment Life [Member]
Goodwill [Roll Forward]
Goodwill, Acquired During Period	$ 2,832	[1]

[1] $1.0 billion attributable to noncontrolling interests.

XML

Goodwill and Value of business acquired (VOBA) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
VOBA Roll Forward
Balance, beginning of period	$ 3,702
Present Value of Future Insurance Profits, Addition from Acquisition	309
Amortization of Value of Business Acquired (VOBA)	235	[1]
Foreign exchange revaluation and other	(101)
Balance, end of period	3,675
Acquired Indefinite-Lived Intangible Assets [Line Items]
Amortization of Value of Business Acquired (VOBA)	$ 235	[1]

[1] Recognized in Policy acquisition costs in the Consolidated statements of operations.

XML

Goodwill and Value of business acquired, and Other Intangible Assets (Other Intangible Assets) (Details)) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets subject to amortization	$ 3,350	$ 2,459
Intangible assets not subject to amortization	3,494	2,982
Other intangible assets	6,844	$ 5,441
Acquired Indefinite-Lived Intangible Assets [Line Items]
2028, Other intangible assets	$ 253

XML

Value of Business Acquired, Goodwill, and Other Intangible Assets (Estimated Amortization Expense Over Next Five Years) (Details) $ in Millions	Sep. 30, 2023 USD ($)
Finite-Lived Intangible Assets [Line Items]
Fourth quarter of 2023, VOBA	$ 67
Fourth quarter of 2023, Other intangible assets	103
2024, Other intangible assets	354
2025, Other intangible assets	314
2026, Other intangible assets	288
2027, Other intangible assets	265
2028, Other intangible assets	253
Total, other intangible assets	1,577
2024, Other intangible assets	270
2025, Other intangible assets	202
2026, Other intangible assets	181
2027, Other intangible assets	165
Present Value of Future Insurance Profits, Expected Amortization, Total	1,115
2024, Other intangible assets	230
Huatai Group | Unearned Premium Reserves Intangible Asset
Finite-Lived Intangible Assets [Line Items]
Fourth quarter of 2023, Other intangible assets	16	[1]
2024, Other intangible assets	30	[1]
2025, Other intangible assets	16	[1]
2026, Other intangible assets	7	[1]
2027, Other intangible assets	3	[1]
2028, Other intangible assets	0	[1]
Total, other intangible assets	72	[1]
Huatai Group | Use Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Fourth quarter of 2023, Other intangible assets	3	[2]
2024, Other intangible assets	12	[2]
2025, Other intangible assets	12	[2]
2026, Other intangible assets	12	[2]
2027, Other intangible assets	13	[2]
2028, Other intangible assets	13	[2]
Total, other intangible assets	65	[2]
Chubb Acquired Purchased Intangible assets
Finite-Lived Intangible Assets [Line Items]
Fourth quarter of 2023, Other intangible assets	84
2024, Other intangible assets	312
2025, Other intangible assets	286
2026, Other intangible assets	269
2027, Other intangible assets	249
2028, Other intangible assets	240
Total, other intangible assets	$ 1,440

[1] Recognized in Policy acquisition costs in the Consolidated statements of operations.

[2] Recognized in Other (income) expense in the Consolidated statements of operations

XML

Unpaid losses and loss expenses (RF) (Details) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022
Unpaid Losses and Loss Expenses [Roll Forward]
Gross unpaid losses and loss expenses – beginning of period		$ 75,747	$ 72,330
Reinsurance recoverable on unpaid losses – beginning of period (1)	[1]	(17,086)	(16,132)
Net unpaid losses and loss expenses – beginning of period		58,661	56,198
Current Year Claims and Claims Adjustment Expense		18,604	17,755
Prior Year Claims and Claims Adjustment Expense	[2]	(667)	(922)
Total, Incurred		17,937	16,833
Net loss and loss expenses paid, Current Year		4,853	4,511
Net loss and loss expenses paid, Prior Years		10,158	9,217
Total, Paid		15,011	13,728
Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Revaluation And Other		(95)	(1,280)
Net unpaid losses and loss expenses – end of period		61,897	58,023
Reinsurance recoverable on unpaid losses (1)	[1]	17,808	17,313
Gross unpaid losses and loss expenses – end of period		79,705	75,336
prior period development, net adjustments		71	$ 213
Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease), Gross		4,000
Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease)		$ 3,200

[1] Net of valuation allowance for uncollectible reinsurance.

[2] Relates to prior period loss reserve development only and excludes prior period development related to reinstatement premiums, expense adjustments, earned premiums, and development on international A&H lines totaling $71 million and $213 million for the nine months ended September 30, 2023 and 2022, respectively.

XML

Unpaid losses and loss expenses Unpaid losses and loss expenses (PPD table) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	$ (200)	$ (222)	$ (596)	$ (709)
North America Commercial P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(84)	(166)	(302)	(561)
North America Commercial P&C Insurance [Member] | Auto Liability [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		58
North America Commercial P&C Insurance [Member] | Workers' Compensation Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	71	(164)	379
North America Commercial P&C Insurance [Member] | Commercial Excess and Umbrella [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		71
North America Commercial P&C Insurance [Member] | Property and Inland Marine
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		(132)
North America Commercial P&C Insurance [Member] | Multi-Line Loss Sensitive
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		(66)
North America Personal P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(119)	(133)	(135)	(187)
North American Agriculture Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(9)	9	(12)	(17)
Overseas General Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(49)	(5)	(253)	(238)
Overseas General Insurance [Member] | Accident and Health Insurance Product Line [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			45	(75)
Overseas General Insurance [Member] | Property, Liability and Casualty Insurance Product Line
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development				(67)
Overseas General Insurance [Member] | Property and Inland Marine
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			147
Overseas General Insurance [Member] | Casualty lines
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		(82)
Overseas General Insurance [Member] | Environmental lines
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development				(34)
Overseas General Insurance [Member] | Financial [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		114
Overseas General Insurance [Member] | Personal Lines
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development				(53)
Global Reinsurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	(25)	22
Corporate Segment [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		73	131	272
Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(316)	(261)	(659)	(654)
Short Tail [Member] | North America Commercial P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(191)	(137)	(279)	(246)
Short Tail [Member] | North America Personal P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(119)	(133)	(135)	(187)
Short Tail [Member] | North American Agriculture Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(9)	9	(12)	(17)
Short Tail [Member] | Overseas General Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	3	0	(201)	(233)
Short Tail [Member] | Global Reinsurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	(32)	29
Short Tail [Member] | Corporate Segment [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	0	0
Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	116	39	63	(55)
Long Tail [Member] | North America Commercial P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	107	(29)	(23)	(315)
Long Tail [Member] | North America Personal P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	0	0
Long Tail [Member] | North American Agriculture Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	0	0
Long Tail [Member] | Overseas General Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(52)	(5)	(52)	(5)
Long Tail [Member] | Global Reinsurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	7	(7)
Long Tail [Member] | Corporate Segment [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	$ 61	$ 73	131	272
Long Tail [Member] | Corporate Segment [Member] | Other [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			$ 49	$ 155

XML

Unpaid losses and loss expenses Unpaid losses and loss expenses (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jul. 01, 2023	Dec. 31, 2022	Dec. 31, 2021
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	$ (200)	$ (222)	$ (596)	$ (709)
Unpaid losses and loss expenses	79,705	75,336	79,705	75,336		$ 75,747	$ 72,330
Net loss and loss expenses paid, Prior Years			10,158	9,217
Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease), Gross			4,000
Liability for Unpaid Claims and Claims Adjustment Expense, Net	61,897	58,023	61,897	58,023		$ 58,661	56,198
Huatai Group
Liability for Claims and Claims Adjustment Expense [Line Items]
Unpaid losses and loss expenses					$ 831
Liability for Unpaid Claims and Claims Adjustment Expense, Net					$ 405		$ 0
Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	116	39	63	(55)
Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(316)	(261)	(659)	(654)
North America Commercial P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(84)	(166)	(302)	(561)
North America Commercial P&C Insurance [Member] | Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	107	(29)	(23)	(315)
North America Commercial P&C Insurance [Member] | Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(191)	(137)	(279)	(246)
North America Commercial P&C Insurance [Member] | Commercial Excess and Umbrella [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		71
North America Commercial P&C Insurance [Member] | Workers' Compensation Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	71	(164)	379
North America Commercial P&C Insurance [Member] | Property and Inland Marine
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		(132)
North America Commercial P&C Insurance [Member] | Auto Liability [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		58
North America Agricultural Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(9)	9	(12)	(17)
North America Agricultural Insurance [Member] | Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	0	0
North America Agricultural Insurance [Member] | Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(9)	9	(12)	(17)
Corporate Segment [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development		73	131	272
Corporate Segment [Member] | Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	61	73	131	272
Corporate Segment [Member] | Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	0	0
Corporate Segment [Member] | Other [Member] | Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			49	155
Overseas General Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(49)	(5)	(253)	(238)
Overseas General Insurance [Member] | Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(52)	(5)	(52)	(5)
Overseas General Insurance [Member] | Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	3	0	(201)	(233)
Overseas General Insurance [Member] | Accident and Health Insurance Product Line [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			45	(75)
Overseas General Insurance [Member] | Property, Liability and Casualty Insurance Product Line
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development				(67)
Overseas General Insurance [Member] | Property and Inland Marine
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			147
Overseas General Insurance [Member] | financial lines
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	77
Overseas General Insurance [Member] | Political Risk
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	51
North America Personal P&C Insurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(119)	(133)	(135)	(187)
North America Personal P&C Insurance [Member] | Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	0	0
North America Personal P&C Insurance [Member] | Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	(119)	(133)	(135)	(187)
Global Reinsurance [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	(25)	22
Global Reinsurance [Member] | Long Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	0	7	(7)
Global Reinsurance [Member] | Short Tail [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	0	$ 0	(32)	$ 29
North America Commercial P&C Insurance [Member] | Commercial Excess and Umbrella [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	222		227
North America Commercial P&C Insurance [Member] | Property and Inland Marine
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	188		113
North America Commercial P&C Insurance [Member] | Surety Product Line [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			101
North America Commercial P&C Insurance [Member] | Auto Liability [Member]
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development			125
North American Personal P&C Insurance [Member] | Personal Excess Liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	145
North American Personal P&C Insurance [Member] | homeowners and valuables lines
Liability for Claims and Claims Adjustment Expense [Line Items]
Net Prior Period Development	$ 263		$ 244

XML

Future policy benefits (Rollforward) (Details) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2021
Liability for Future Policy Benefit, Activity [Line Items]
Balance – beginning of period		$ 13,024	$ 4,313
Beginning balance at original discount rate				$ 13,685	$ 3,991
Effect of changes in cash flow assumptions				(734)	(32)
Effect of actual variances from expected experience				(127)	(139)
Adjusted beginning of period balance		12,824	3,820
Consolidation of Huatai Group		1,850
Acquisition of Cigna			9,737
Issuances		1,435	601
Interest accrual		529	267
Net premiums collected (1)	[1]	(1,515)	(703)
Other (including foreign exchange)		259	(639)
Ending balance at original discount rate		14,864	13,083
Effect of changes in discount rate assumptions		(629)	(686)
Balance – end of period		14,235	12,397
Balance – beginning of period		21,920	10,775
Beginning balance at original discount rate				23,052	9,402
Effect of changes in cash flow assumptions				(770)	(38)
Effect of actual variances from expected experience				(112)	(144)
Adjusted beginning of period balance		22,170	9,220
Consolidation of Huatai Group		4,137
Acquisition of Cigna			13,583
Issuances		1,436	606
Interest accrual		750	420
Benefits payments		(1,404)	(704)
Other (including foreign exchange)		(336)	1,072
Ending balance at original discount rate		26,753	22,053
Effect of changes in discount rate assumptions		(1,227)	(1,240)
Balance – end of period		25,526	20,813
Net liability for future policy benefits		12,009	9,151
Deferred profit liability		1,100	755
Net liability for future policy benefits, per consolidated balance sheet		13,109	9,906	10,476		$ 7,652
Less: Reinsurance recoverable on future policy benefits		315	312
Net liability for future policy benefits, after reinsurance recoverable		$ 12,794	$ 9,594
Weighted-average duration (years)		18 years 8 months 12 days	16 years 2 months 12 days
Term Life Insurance | Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Balance – beginning of period		$ 818	$ 422
Beginning balance at original discount rate				879	397
Effect of changes in cash flow assumptions				35	0
Effect of actual variances from expected experience				(13)	(31)
Adjusted beginning of period balance		901	366
Consolidation of Huatai Group		3
Acquisition of Cigna			445
Issuances		90	95
Interest accrual		45	45
Net premiums collected (1)	[1]	(127)	(93)
Other (including foreign exchange)		9	(46)
Ending balance at original discount rate		903	812
Effect of changes in discount rate assumptions		(69)	(59)
Balance – end of period		834	753
Balance – beginning of period		1,427	921
Beginning balance at original discount rate				1,555	858
Effect of changes in cash flow assumptions				31	(5)
Effect of actual variances from expected experience				(10)	(32)
Adjusted beginning of period balance		1,576	821
Consolidation of Huatai Group		17
Acquisition of Cigna			668
Issuances		90	100
Interest accrual		54	52
Benefits payments		(119)	(82)
Other (including foreign exchange)		92	112
Ending balance at original discount rate		1,710	1,447
Effect of changes in discount rate assumptions		(152)	(126)
Balance – end of period		1,558	1,321
Net liability for future policy benefits		724	568
Deferred profit liability		223	172
Net liability for future policy benefits, per consolidated balance sheet		947	740			454
Less: Reinsurance recoverable on future policy benefits		111	111
Net liability for future policy benefits, after reinsurance recoverable		$ 836	$ 629
Weighted-average duration (years)		10 years 2 months 12 days	9 years
Whole Life Insurance | Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Balance – beginning of period		$ 2,301	$ 1,341
Beginning balance at original discount rate				2,354	1,243
Effect of changes in cash flow assumptions				40	(3)
Effect of actual variances from expected experience				6	12
Adjusted beginning of period balance		2,400	1,252
Consolidation of Huatai Group		1,690
Acquisition of Cigna			1,078
Issuances		274	155
Interest accrual		62	37
Net premiums collected (1)	[1]	(375)	(156)
Other (including foreign exchange)		56	(102)
Ending balance at original discount rate		3,995	2,264
Effect of changes in discount rate assumptions		(62)	(95)
Balance – end of period		3,933	2,169
Balance – beginning of period		6,048	4,785
Beginning balance at original discount rate				6,225	3,833
Effect of changes in cash flow assumptions				44	(3)
Effect of actual variances from expected experience				12	14
Adjusted beginning of period balance		6,281	3,844
Consolidation of Huatai Group		3,659
Acquisition of Cigna			2,267
Issuances		276	155
Interest accrual		176	123
Benefits payments		(212)	(151)
Other (including foreign exchange)		22	207
Ending balance at original discount rate		10,202	6,031
Effect of changes in discount rate assumptions		(274)	(308)
Balance – end of period		9,928	5,723
Net liability for future policy benefits		5,995	3,554
Deferred profit liability		707	450
Net liability for future policy benefits, per consolidated balance sheet		6,702	4,004			3,767
Less: Reinsurance recoverable on future policy benefits		47	56
Net liability for future policy benefits, after reinsurance recoverable		$ 6,655	$ 3,948
Weighted-average duration (years)		26 years 6 months	24 years 8 months 12 days
Accident and Health Insurance Product Line [Member] | Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Balance – beginning of period		$ 9,863	$ 2,520
Beginning balance at original discount rate				10,409	2,323
Effect of changes in cash flow assumptions				(811)	(29)
Effect of actual variances from expected experience				(120)	(120)
Adjusted beginning of period balance		9,478	2,174
Consolidation of Huatai Group		145
Acquisition of Cigna			8,191
Issuances		1,066	348
Interest accrual		421	184
Net premiums collected (1)	[1]	(998)	(445)
Other (including foreign exchange)		212	(487)
Ending balance at original discount rate		9,900	9,965
Effect of changes in discount rate assumptions		(497)	(531)
Balance – end of period		9,403	9,434
Balance – beginning of period		14,206	4,939
Beginning balance at original discount rate				15,022	4,589
Effect of changes in cash flow assumptions				(848)	(41)
Effect of actual variances from expected experience				(114)	(126)
Adjusted beginning of period balance		14,060	4,422
Consolidation of Huatai Group		163
Acquisition of Cigna			10,542
Issuances		1,065	348
Interest accrual		514	242
Benefits payments		(1,065)	(469)
Other (including foreign exchange)		(628)	651
Ending balance at original discount rate		14,109	14,434
Effect of changes in discount rate assumptions		(790)	(790)
Balance – end of period		13,319	13,644
Net liability for future policy benefits		3,916	4,210
Deferred profit liability		156	125
Net liability for future policy benefits, per consolidated balance sheet		4,072	4,335			2,569
Less: Reinsurance recoverable on future policy benefits		103	107
Net liability for future policy benefits, after reinsurance recoverable		$ 3,969	$ 4,228
Weighted-average duration (years)		10 years 3 months 18 days	11 years
Accident and Health Insurance Product Line [Member] | Overseas General Insurance [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Net liability for future policy benefits		$ 718	$ 735
Deferred profit liability		0	0
Net liability for future policy benefits, per consolidated balance sheet		718	735			773
Less: Reinsurance recoverable on future policy benefits		33	38
Net liability for future policy benefits, after reinsurance recoverable		$ 685	$ 697
Weighted-average duration (years)		4 years 10 months 24 days	5 years 1 month 6 days
Insurance, Other | Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Balance – beginning of period		$ 42	$ 30
Beginning balance at original discount rate				43	28
Effect of changes in cash flow assumptions				2	0
Effect of actual variances from expected experience				0	0
Adjusted beginning of period balance		45	28
Consolidation of Huatai Group		12
Acquisition of Cigna			23
Issuances		5	3
Interest accrual		1	1
Net premiums collected (1)	[1]	(15)	(9)
Other (including foreign exchange)		(18)	(4)
Ending balance at original discount rate		66	42
Effect of changes in discount rate assumptions		(1)	(1)
Balance – end of period		65	41
Balance – beginning of period		239	130
Beginning balance at original discount rate				250	122
Effect of changes in cash flow assumptions				3	11
Effect of actual variances from expected experience				$ 0	$ 0
Adjusted beginning of period balance		253	133
Consolidation of Huatai Group		298
Acquisition of Cigna			106
Issuances		5	3
Interest accrual		6	3
Benefits payments		(8)	(2)
Other (including foreign exchange)		178	102
Ending balance at original discount rate		732	141
Effect of changes in discount rate assumptions		(11)	(16)
Balance – end of period		721	125
Net liability for future policy benefits		656	84
Deferred profit liability		14	8
Net liability for future policy benefits, per consolidated balance sheet		670	92			$ 89
Less: Reinsurance recoverable on future policy benefits		21	0
Net liability for future policy benefits, after reinsurance recoverable		$ 649	$ 92
Weighted-average duration (years)		15 years 1 month 6 days	13 years 6 months

[1] Net premiums collected represent the portion of gross premiums collected from policyholders that is used to fund expected benefit.

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Future policy benefits (Undiscounted & discounted FPB) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Liability for Future Policy Benefit, Activity [Line Items]
Discounted expected future benefit payments	$ 25,526	$ 21,920	$ 20,813	$ 10,775
Term Life Insurance | Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Undiscounted expected future benefit payments	2,492		2,189
Undiscounted expected future gross premiums	2,884		2,503
Discounted expected future benefit payments	1,558	1,427	1,321	921
Discounted expected future gross premiums	1,910		1,682
Whole Life Insurance | Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Undiscounted expected future benefit payments	23,457		15,631
Undiscounted expected future gross premiums	9,478		6,654
Discounted expected future benefit payments	9,928	6,048	5,723	4,785
Discounted expected future gross premiums	7,654		5,173
Accident and Health Insurance Product Line [Member] | Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Undiscounted expected future benefit payments	23,168		23,873
Undiscounted expected future gross premiums	34,055		34,659
Discounted expected future benefit payments	13,319	14,206	13,644	4,939
Discounted expected future gross premiums	20,604		20,193
Insurance, Other | Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Undiscounted expected future benefit payments	977		265
Undiscounted expected future gross premiums	103		102
Discounted expected future benefit payments	721	$ 239	125	$ 130
Discounted expected future gross premiums	$ 92		$ 92

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Future policy benefits (Premiums & interest) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premiums or Assessments	$ 4,769	$ 3,144
Interest Accretion	221	153
Term Life Insurance | Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premiums or Assessments	511	361
Interest Accretion	9	7
Whole Life Insurance | Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premiums or Assessments	858	411
Interest Accretion	114	86
Accident and Health Insurance Product Line [Member] | Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premiums or Assessments	2,171	1,226
Interest Accretion	93	58
Accident and Health Insurance Product Line [Member] | Overseas General Insurance [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premiums or Assessments	1,175	1,075
Interest Accretion	0	0
Insurance, Other | Segment Life [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premiums or Assessments	54	71
Interest Accretion	$ 5	$ 2

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Future policy benefits (Weighted average interest rates) (Details) - Segment Life [Member]	Sep. 30, 2023	Sep. 30, 2022
Term Life Insurance
Liability for Future Policy Benefit, Activity [Line Items]
Interest Accretion Rate	2.90%	2.60%
Current Discount Rate	6.00%	6.10%
Whole Life Insurance
Liability for Future Policy Benefit, Activity [Line Items]
Interest Accretion Rate	3.20%	3.90%
Current Discount Rate	4.70%	5.50%
Accident and Health Insurance Product Line [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Interest Accretion Rate	3.70%	3.60%
Current Discount Rate	6.70%	6.10%
Insurance, Other
Liability for Future Policy Benefit, Activity [Line Items]
Interest Accretion Rate	2.60%	3.70%
Current Discount Rate	4.30%	6.20%

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Policyholders' account balances (Policyholder Account Balance Rollforward) (Details) - USD ($) $ in Millions				9 Months Ended
		Jul. 01, 2023	Jul. 01, 2022	Sep. 30, 2023	Sep. 30, 2022
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance				$ 3,140	$ 2,766
Policyholder Account Balance, Consolidation of Huatai Group		$ 4,014
Policyholder Account Balance, Acquisition of Cigna			$ 355
Policyholder Account Balance, Premium Received				503	347
Policyholder Account Balance, Policy Charge	[1]			(143)	(149)
Policyholder Account Balance, Surrender and Withdrawal				(182)	(94)
Policyholder Account Balance, Benefit Payment				(87)	(18)
Policyholder Account Balance, Interest Expense				82	55
Policyholder Account Balance, Increase (Decrease) from Other Change				(149)	254
Policyholder Account Balance, Ending Balance				7,178	3,008
Universal Life
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance				1,719	1,612
Policyholder Account Balance, Consolidation of Huatai Group		602
Policyholder Account Balance, Acquisition of Cigna			10
Policyholder Account Balance, Premium Received				275	292
Policyholder Account Balance, Policy Charge	[1]			(135)	(141)
Policyholder Account Balance, Surrender and Withdrawal				(69)	(55)
Policyholder Account Balance, Benefit Payment				(6)	(3)
Policyholder Account Balance, Interest Expense				39	30
Policyholder Account Balance, Increase (Decrease) from Other Change				(42)	69
Policyholder Account Balance, Ending Balance				$ 2,383	$ 1,676
Policyholder Account Balance, Weighted Average Crediting Rate				3.80%	3.70%
Policyholder Account Balance, Net Amount at Risk	[2]			$ 10,493	$ 10,116
Policyholder Account Balance, Cash Surrender Value				1,596	934
Insurance, Other
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance				1,421	1,154
Policyholder Account Balance, Consolidation of Huatai Group		$ 3,412
Policyholder Account Balance, Acquisition of Cigna			$ 345
Policyholder Account Balance, Premium Received				228	55
Policyholder Account Balance, Policy Charge	[1]			(8)	(8)
Policyholder Account Balance, Surrender and Withdrawal				(113)	(39)
Policyholder Account Balance, Benefit Payment				(81)	(15)
Policyholder Account Balance, Interest Expense				43	25
Policyholder Account Balance, Increase (Decrease) from Other Change				(107)	185
Policyholder Account Balance, Ending Balance				$ 4,795	$ 1,332
Policyholder Account Balance, Weighted Average Crediting Rate				2.10%	2.60%
Policyholder Account Balance, Net Amount at Risk	[2]			$ 1,675	$ 1,503
Policyholder Account Balance, Cash Surrender Value				$ 3,655	$ 1,280

[1] Contracts included in the policyholder account balances are generally charged a premium and/or monthly assessments on the basis of the account balance

[2] For those guarantees of benefits that are payable in the event of death, the net amount at risk is defined as the current guaranteed minimum death benefit in excess of the current account balance at the balance sheet date.

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Policyholders' account balances (Guaranteed Minimum Crediting Rates) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	$ 7,178	$ 3,140	$ 3,008	$ 2,766
Universal Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	2,383	1,719	1,676	1,612
Universal Life | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	496		490
Universal Life | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	377		394
Universal Life | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	614		287
Universal Life | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	896		505
Insurance, Other
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	4,795	1,421	1,332	$ 1,154
Insurance, Other | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	1,763		717
Insurance, Other | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	487		0
Insurance, Other | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	1,746		191
Insurance, Other | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	799		424
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 | Universal Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	622		567
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 | Universal Life | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	3		3
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 | Universal Life | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0		0
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 | Universal Life | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	56		59
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 | Universal Life | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	563		505
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 | Insurance, Other
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	3,846		1,026
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 | Insurance, Other | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	1,328		411
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 | Insurance, Other | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0		0
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 | Insurance, Other | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	1,719		191
Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200 | Insurance, Other | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	799		424
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 | Universal Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	1,740		1,078
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 | Universal Life | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	472		456
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 | Universal Life | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	377		394
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 | Universal Life | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	558		228
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 | Universal Life | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	333		$ 0
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 | Insurance, Other
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	626	0
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 | Insurance, Other | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	112	0
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 | Insurance, Other | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	487	0
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 | Insurance, Other | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	27	0
Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400 | Insurance, Other | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Universal Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	21	31
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Universal Life | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	21	31
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Universal Life | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Universal Life | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Universal Life | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Insurance, Other
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	323	306
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Insurance, Other | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	323	306
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Insurance, Other | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Insurance, Other | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Insurance, Other | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance	$ 0	$ 0
Minimum | Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance, Guaranteed Minimum Crediting Rate	2.01%
Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance, Guaranteed Minimum Crediting Rate	4.00%
Maximum | Policyholder account balance, guaranteed minimum credit rating, range from 0000 to 0200
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance, Guaranteed Minimum Crediting Rate	2.00%
Maximum | Policyholder account balance, guaranteed minimum credit rating, range from 0201 to 0400
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balance, Guaranteed Minimum Crediting Rate	4.00%

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Market risk benefits (MRB Roll-Forward) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Jan. 01, 2021	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Market Risk Benefit [Line Items]
Market Risk Benefit, Liability, beginning of period				$ 800
Market Risk Benefit, Liability, end of period		$ 770		770
Market risk benefits gains (losses)		(32)	$ 69	(154)	$ 85
Variable Annuity
Market Risk Benefit [Line Items]
Market Risk Benefit, Liability, end of period	$ 1,163
Long-Duration Insurance, Other | Variable Annuity
Market Risk Benefit [Line Items]
Market Risk Benefit, Liability, beginning of period				800	812
Balance, beginning of period, before effect of changes in the instrument-specific credit risk				776	755
Interest rate changes				(117)	(561)
Effect of changes in equity markets				(69)	633
Effect of changes in volatilities				51	14
Market Risk Benefit, Increase (Decrease) from Future Expected Policyholder Behavior Assumption				89	40
Effect of timing and all other				19	(29)
Balance, end of period, before effect of changes in the instrument-specific credit risk		749	852	749	852
Effect of changes in the instrument-specific credit risk		21	9	21	9
Market Risk Benefit, Liability, end of period		770	861	$ 770	$ 861
Market risk benefit, weighted-average age of policyholders (age)				73 years	73 years
Market Risk Benefit, Net Amount at Risk		2,138	$ 2,885	$ 2,138	$ 2,885
Market Risk Benefits Other Gains (Losses)				$ (181)	$ 186
Long-Duration Insurance, Other | Variable Annuity | Measurement Input, Annuitization Rate [Member]
Market Risk Benefit [Line Items]
Market Risk Benefit, Increase (Decrease) from Future Expected Policyholder Behavior Assumption		$ 92

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Market Risk Benefits (MRB Valuation) (Details)		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022
Minimum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Long-Duration Contracts, Assumptions by Product and Guarantee, Lapse Rate		0.50%	0.50%
Significant Unobservable Inputs Annuitization Rate		0.00%	0.00%
Maximum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Long-Duration Contracts, Assumptions by Product and Guarantee, Lapse Rate		30.00%	30.40%
Significant Unobservable Inputs Annuitization Rate		100.00%	100.00%
Weighted Average
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Long-Duration Contracts, Assumptions by Product and Guarantee, Lapse Rate	[1]	4.00%	3.80%
Significant Unobservable Inputs Annuitization Rate	[1]	4.80%	4.60%

[1] The weighted-average lapse and annuitization rates are determined by weighting each treaty's rates by the MRB contract's fair value.

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Separate accounts (Fair Value of Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Separate Account Investment [Line Items]
Separate account assets	$ 5,306	$ 5,190
Separate Account, Cash and Cash Equivalents
Fair Value, Separate Account Investment [Line Items]
Separate account assets	88	141
Separate Account, equity securities and mutual funds
Fair Value, Separate Account Investment [Line Items]
Separate account assets	5,129	4,960
Separate Account, Non-U.S. Government Treasuries
Fair Value, Separate Account Investment [Line Items]
Separate account assets	$ 89	$ 89

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Separate accounts (Liabilities) (Details) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022
Separate Account, Liability, Surrender and Withdrawal [Abstract]
Separate Account, Liability, Beginning Balance		$ 5,190	$ 5,560
Acquisition of Cigna		0	301
Separate Account, Liability, Premium and Deposit		724	1,147
Separate Account, Liability, Policy Charge		(103)	(93)
Separate Account, Liability, Surrender and Withdrawal		(407)	(304)
Separate Account, Liability, Benefit Payment		(291)	(289)
Separate Account, Liability, Increase (Decrease) from Invested Performance		382	(978)
Separate Account, Liability, Increase (Decrease) from Other Change		(189)	(453)
Separate Account, Liability, Ending Balance		5,306	4,891
Separate Account, Liability, Cash Surrender Value, Amount	[1]	$ 5,285	$ 4,771

[1] Cash surrender value represents the amount of the contract holder's account balances distributable at the balance sheet date less certain surrender charges.

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Commitments, Contingencies, And Guarantees (Narrative) (Detail) € in Millions, $ in Millions	Sep. 30, 2023 USD ($)	Sep. 30, 2023 EUR (€)	Dec. 31, 2022 USD ($)
Financial Instruments Owned and Pledged as Collateral [Line Items]
Derivative liability subject to a master netting agreement	$ 97		$ 60
Hedged Liability, Fair Value Hedge	1,600	€ 1,500
Repurchase agreements (refer to Note 3 for balances associated with VIEs)	2,617		1,419
Purchase Commitment, Remaining Minimum Amount Committed	1,075		770
Carrying value of limited partnerships and partially-owned investment companies included in other investments	13,100		12,000
Funding commitments relating to limited partnerships and partially-owned investment companies	6,300		7,400
Unrecognized tax benefits	67
Operating Lease, Right-of-Use Asset	549		607
Operating Lease, Liability	$ 577		$ 633
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities	Other liabilities
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets	Other assets

XML

Commitments, Contingencies, And Guarantees (Balance Sheet Locations, Fair Values In Asset Or (Liability) Position, And Notional Values/Payment Provisions Of Derivative Instruments) (Detail) - USD ($) $ in Millions		Sep. 30, 2023	Dec. 31, 2022
Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount		$ 3,711	$ 4,134
Options/Futures contracts on notes and bonds
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount		2,150	1,511
Convertible securities
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	61	37
Investment And Embedded Derivative Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		95	112
Fair Value, Liability		(168)	(139)
Derivative, Notional Amount		5,922	5,682
Futures contracts on equities
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[2]	1,119	939
Other Derivatives [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount		368	0
Other Derivative Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount		1,487	939
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		48	17
Fair Value, Liability		(68)	53
Derivative, Notional Amount		3,203	3,199
Fair Value Hedging
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount		1,609	1,595
Net Investment Hedging
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount		1,594	1,604
Other Assets [Member] | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		15	64
Other Assets [Member] | Options/Futures contracts on notes and bonds
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		27	18
Other Assets [Member] | Futures contracts on equities
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[2]	48	33
Other Assets [Member] | Other Derivatives [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		5	0
Other Assets [Member] | Other Derivative Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		53	33
Other Assets [Member] | Fair Value Hedging
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		48	17
Other Assets [Member] | Net Investment Hedging
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		0	0
Fixed Maturities [Member] | Convertible securities
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	53	30
Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Fair Value, Liability		(147)	(115)
Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Options/Futures contracts on notes and bonds
Derivatives, Fair Value [Line Items]
Fair Value, Liability		(21)	(24)
Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Futures contracts on equities
Derivatives, Fair Value [Line Items]
Fair Value, Liability	[2]	0	0
Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Other Derivatives [Member]
Derivatives, Fair Value [Line Items]
Fair Value, Liability		(4)	0
Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Other Derivative Instruments [Member]
Derivatives, Fair Value [Line Items]
Fair Value, Liability		(4)	0
Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Fair Value Hedging
Derivatives, Fair Value [Line Items]
Fair Value, Liability		0	0
Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Net Investment Hedging
Derivatives, Fair Value [Line Items]
Fair Value, Liability		(68)	(53)
Equity Securities | Convertible securities
Derivatives, Fair Value [Line Items]
Fair Value, Liability	[1]	$ 0	$ 0

[1] Includes fair value of embedded derivatives.

[2] Related to MRB book of business.

XML

Commitment, Contingencies, And Guarantees (Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financial Instruments Owned and Pledged as Collateral [Line Items]
Interest expense reclassified from OCI	$ 174	$ 150	$ 499	$ 416
Fair Value Hedging
Financial Instruments Owned and Pledged as Collateral [Line Items]
Gain/(loss) recognized in OCI	(17)	(94)	23	(94)
Net realized gain/(loss) reclassified from OCI	(51)	(32)	(20)	(32)
Interest expense reclassified from OCI	(4)	0	(12)	0
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	$ 38	$ (62)	$ 55	$ (62)

XML

Commitments, Contingencies, And Guarantees (Schedule of Net Investment Hedges, Statements of Financial Performance and Financial Position, Location) (Details) - Net Investment Hedging - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financial Instruments Owned and Pledged as Collateral [Line Items]
Gain/(loss) recognized in OCI	$ (20)	$ 64	$ (8)	$ 64
Interest income reclassified from OCI	3	0	10	0
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	$ (23)	$ 64	$ (18)	$ 64

XML

Commitments, Contingencies, And Guarantees (Net Realized Gains (Losses) Of Derivative Instrument Activity In Consolidated Statement Of Operations) (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative		$ 54	$ (163)	$ (178)	$ (1)
Foreign currency forward contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative		(17)	(247)	(95)	(515)
All Other Futures Contracts, Options and equities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative		29	49	5	285
Convertible securities
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative	[1]	(3)	0	(2)	(2)
Investment And Embedded Derivative Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative		9	(198)	(92)	(232)
Futures contracts on equities
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative	[2]	52	54	(80)	240
Other Derivatives [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative		(7)	(19)	(6)	(9)
Guaranteed Living Benefit And Other Derivative Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative		$ 45	$ 35	$ (86)	$ 231

[1] Includes embedded derivatives.

[2] Related to MRB book of business.

XML

Commitments, contingencies, and guarantees Commitments, Contingencies, And Guarantees (Transactions accounted for as secured borrowings) (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	$ 1,469	$ 1,523
Securities lending payable	1,469	1,523
Cash [Member] | Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	762	820
U.S. Treasury / Agency | Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	81	72
Foreign [Member] | Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	555	604
Corporate and asset-backed securities | Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	47	27
Equity Securities | Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	18	0
Municipal | Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending collateral	$ 6	$ 0

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Commitments, contingencies, and guarantees Commitments, Contingencies, And Guarantees (Collateral pledged under repurchase agreements) (Details) - USD ($) $ in Millions		Sep. 30, 2023	Dec. 31, 2022
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements (refer to Note 3 for balances associated with VIEs)		$ 2,617	$ 1,419
Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		2,753	1,527
Cash [Member] | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		46	12
U.S. Treasury / Agency | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		103	101
Mortgage-backed securities | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		1,466	1,414
Repurchase Agreements [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Secured Borrowings, Gross, Difference, Amount	[1]	136	108
Non-US [Member] | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		1,138	0
Maturity Less than 30 Days [Member] | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		1,188	933
Maturity Less than 30 Days [Member] | Cash [Member] | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		0	12
Maturity Less than 30 Days [Member] | U.S. Treasury / Agency | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		0	0
Maturity Less than 30 Days [Member] | Mortgage-backed securities | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		50	921
Maturity Less than 30 Days [Member] | Non-US [Member] | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		1,138	0
Maturity 30 to 90 Days [Member] | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		610	594
Maturity 30 to 90 Days [Member] | Cash [Member] | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		0	0
Maturity 30 to 90 Days [Member] | U.S. Treasury / Agency | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		103	101
Maturity 30 to 90 Days [Member] | Mortgage-backed securities | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		507	493
Maturity 30 to 90 Days [Member] | Non-US [Member] | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		0	$ 0
Maturity Greater than 90 Days [Member] | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		955
Maturity Greater than 90 Days [Member] | Cash [Member] | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		46
Maturity Greater than 90 Days [Member] | U.S. Treasury / Agency | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		0
Maturity Greater than 90 Days [Member] | Mortgage-backed securities | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		909
Maturity Greater than 90 Days [Member] | Non-US [Member] | Asset Pledged as Collateral without Right
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Assets pledged under repurchase agreements		$ 0

[1] Per the repurchase agreements, the amount of collateral posted is required to exceed the amount of gross liability.

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Shareholders' equity (Details)				9 Months Ended
	May 22, 2023 shares	Aug. 04, 2022 shares	Jan. 17, 2022 shares	Sep. 30, 2023 SFr / shares shares	May 17, 2023 $ / shares	Dec. 31, 2022 SFr / shares shares	May 19, 2022 $ / shares	May 20, 2021 $ / shares
Stockholders' Equity Note [Abstract]
Common Shares, par value | SFr / shares				SFr 0.50		SFr 24.15
Treasury Stock, Shares, Retired	14,925,028	13,179,100	14,465,400	14,925,028
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures				2,024,083
Common Stock, Dividend Rate Approved | $ / shares					$ 0.86		$ 0.83	$ 0.80
Annual dividend per share approved by shareholders | $ / shares					3.44		3.32	3.20
Equity, Class of Treasury Stock [Line Items]
Common Stock, Dividend Rate Approved | $ / shares					$ 0.86		$ 0.83	$ 0.80
Treasury Stock, Shares, Retired	14,925,028	13,179,100	14,465,400	14,925,028
Treasury Stock, Common, Shares				23,467,247		31,781,758
Common Shares, par value | SFr / shares				SFr 0.50		SFr 24.15

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Shareholders' equity Dividends Declared (Details)	3 Months Ended				9 Months Ended
	Sep. 30, 2023 SFr / shares	Sep. 30, 2023 $ / shares	Sep. 30, 2022 SFr / shares	Sep. 30, 2022 $ / shares	Sep. 30, 2023 SFr / shares	Sep. 30, 2023 $ / shares	Sep. 30, 2022 SFr / shares	Sep. 30, 2022 $ / shares
United States of America, Dollars
Equity, Class of Treasury Stock [Line Items]
Common Stock, Dividends, Per Share, Declared | $ / shares		$ 0.86		$ 0.83		$ 2.55		$ 2.46
Switzerland, Francs
Equity, Class of Treasury Stock [Line Items]
Common Stock, Dividends, Per Share, Declared | SFr / shares	SFr 0.75		SFr 0.78		SFr 2.29		SFr 2.32

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Shareholders' equity Share Repurchases (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jul. 01, 2023	May 19, 2022	Jul. 19, 2021
July 2021 Stock Repurchase Plan
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount							$ 5,000
Number of shares repurchased				14,022,728
Cost of shares repurchased				$ 2,815
May 2022 Stock Repurchase Plan
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount						$ 2,500
Number of shares repurchased		3,676,528	8,634,600	14,022,728
Cost of shares repurchased		$ 685	$ 1,758	$ 2,815
Repurchase authorization remaining at end of period		$ 1,816		$ 1,816
July 2023 Stock Repurchase Plan
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount					$ 5,000
Number of shares repurchased	2,949,900		8,634,600
Cost of shares repurchased	$ 606		$ 1,758
Repurchase authorization remaining at end of period	$ 4,398		$ 4,398

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Shareholders' equity AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance – beginning of period, net of tax			$ 50,519
Other comprehensive loss, before income tax	$ (1,772)	$ (3,559)	(1,305)	$ (12,113)
Other Comprehensive Income (Loss), Tax	0	(109)	104	(1,071)
Other Comprehensive Income (Loss), Net of Tax	(1,772)	(3,450)	(1,409)	(11,042)
Balance – end of period, net of tax	52,373	47,675	52,373	47,675
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance – beginning of period, net of tax	(6,809)	(5,713)	(7,279)	2,256
Balance – end of period, net of tax	(8,953)	(8,611)	(8,953)	(8,611)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Including Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(2,240)	(3,324)	(1,935)	(12,898)
Net Realized Gains (Losses) Reclassified from AOCI	(70)	(279)	(357)	(857)
Other comprehensive loss, before income tax	(2,170)	(3,045)	(1,578)	(12,041)
Other Comprehensive Income (Loss), Tax	(29)	(147)	93	(1,174)
Other Comprehensive Income (Loss), Net of Tax	(2,141)	(2,898)	(1,671)	(10,867)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), Net of Tax	3	0	3	0
AOCI, Liability for Future Policy Benefit, Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance – beginning of period, net of tax	(247)	(427)	(75)	(1,399)
Balance – end of period, net of tax	404	(5)	404	(5)
AOCI, Liability for Future Policy Benefit, Including Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive loss, before income tax	683	479	497	1,546
Other Comprehensive Income (Loss), Tax	35	57	21	152
Other Comprehensive Income (Loss), Net of Tax	648	422	476	1,394
AOCI, Liability for Future Policy Benefit, Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), Net of Tax	(3)	0	(3)	0
AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance – beginning of period, net of tax	(16)	(17)	(24)	(57)
Balance – end of period, net of tax	(21)	(9)	(21)	(9)
AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Including Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), Net of Tax	(5)	8	3	48
AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), Net of Tax	0	0	0	0
Cumulative Foreign Currency Translation Adjustment [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance – beginning of period, net of tax	(2,920)	(2,768)	(2,966)	(2,114)
Balance – end of period, net of tax	(3,148)	(3,703)	(3,148)	(3,703)
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(314)	(942)	(269)	(1,631)
Net Realized Gains (Losses) Reclassified from AOCI	3	0	10	0
Other comprehensive loss, before income tax	(317)	(942)	(279)	(1,631)
Other Comprehensive Income (Loss), Tax	(13)	(7)	(21)	(42)
Other Comprehensive Income (Loss), Net of Tax	(304)	(935)	(258)	(1,589)
Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), Net of Tax	(76)	0	(76)	0
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance – beginning of period, net of tax	(53)	0	(66)	0
Balance – end of period, net of tax	(22)	(49)	(22)	(49)
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(17)	(94)	23	(94)
Net Realized Gains (Losses) Reclassified from AOCI	(55)	(32)	(32)	(32)
Other comprehensive loss, before income tax	38	(62)	55	(62)
Other Comprehensive Income (Loss), Tax	7	(13)	11	(13)
Other Comprehensive Income (Loss), Net of Tax	31	(49)	44	(49)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), Net of Tax	0	0	0	0
Postretirement Benefit Liability Adjustment [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance – beginning of period, net of tax	223	259	225	240
Balance – end of period, net of tax	222	261	222	261
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive loss, before income tax	(1)	3	(3)	27
Other Comprehensive Income (Loss), Tax	0	1	0	6
Other Comprehensive Income (Loss), Net of Tax	(1)	2	(3)	21
Accumulated Defined Benefit Plans Adjustment Attributable to Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), Net of Tax	0	0	0	0
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance – beginning of period, net of tax	(9,822)	(8,666)	(10,185)	(1,074)
Other Comprehensive Income (Loss), Net of Tax	(1,696)	(3,450)	(1,333)	(11,042)
Balance – end of period, net of tax	$ (11,518)	$ (12,116)	$ (11,518)	$ (12,116)

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Shareholders' equity AOCI Reclassifications (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Equity, Class of Treasury Stock [Line Items]
Interest expense	$ 174	$ 150	$ 499	$ 416
Income Tax (Expense) Benefit	(413)	(263)	(1,189)	(907)
Net income (loss)	2,043	792	5,728	3,935
Reclassification out of Accumulated Other Comprehensive Income
Equity, Class of Treasury Stock [Line Items]
Net income (loss)	(86)	(265)	(315)	(744)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income
Equity, Class of Treasury Stock [Line Items]
Debt Securities, Available-for-sale, Realized Gain	(70)	(279)	(357)	(857)
Income Tax (Expense) Benefit	25	39	(59)	(138)
Net income (loss)	(45)	(240)	(298)	(719)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent | Reclassification out of Accumulated Other Comprehensive Income
Equity, Class of Treasury Stock [Line Items]
Foreign Currency Transaction Gain (Loss), Realized	(51)	(32)	(20)	(32)
Interest expense	(4)	0	(12)	0
Income Tax (Expense) Benefit	12	(7)	(7)	(7)
Net income (loss)	(43)	(25)	(25)	(25)
Cumulative Foreign Currency Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income
Equity, Class of Treasury Stock [Line Items]
Interest expense	3	0	10	0
Income Tax (Expense) Benefit	(1)	0	2	0
Net income (loss)	$ 2	$ 0	$ 8	$ 0

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Share-Based Compensation (Detail) - $ / shares		9 Months Ended
	Feb. 23, 2023	Sep. 30, 2023
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period in years		3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period		3 years
Award term period in years		10 years
Stock options granted	1,540,002
Weighted-average grant date fair value for stock options granted	$ 51.32
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period in years		4 years
Restricted stock awards granted to employees and officers of the company	785,319
Grant date fair value of awards except for options granted to employees and officers of the company	$ 208.60
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period in years		3 years
Restricted stock awards granted to employees and officers of the company	407,825
Grant date fair value of awards except for options granted to employees and officers of the company	$ 208.60
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period in years		4 years
Restricted stock awards granted to employees and officers of the company	315,545
Grant date fair value of awards except for options granted to employees and officers of the company	$ 208.60

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Postretirement benefits Components of net periodic benefit costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	$ 2	$ 1	$ 6	$ 3
Non-service (benefit) cost	(22)	(55)	(73)	(164)
Net periodic benefit cost (benefit)	(20)	(54)	(67)	(161)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	0	0	0	0
Interest cost	1	0	2	1
Expected return on plan assets	0	0	(2)	(1)
Defined Benefit Plan, Amortization of Gain (Loss)	(1)	0	(1)	0
Amortization of prior service cost	(1)	0	(1)	0
Settlements	0	0	0	0
Non-service (benefit) cost	(1)	0	(2)	0
Net periodic benefit cost (benefit)	(1)	0	(2)	0
Losses and loss expenses | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	0	0	0	0
Non-service (benefit) cost	(1)	(5)	(6)	(15)
Losses and loss expenses | Other Postretirement Benefits Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	0	0	0	0
Non-service (benefit) cost	0	0	0	0
Administrative Expense | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	2	1	6	3
Non-service (benefit) cost	(21)	(50)	(67)	(149)
Administrative Expense | Other Postretirement Benefits Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	0	0	0	0
Non-service (benefit) cost	(1)	0	(2)	0
Foreign Plan [Member] | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	2	1	6	3
Interest cost	9	5	27	17
Expected return on plan assets	(13)	(11)	(38)	(33)
Defined Benefit Plan, Amortization of Gain (Loss)	0	0	0	0
Amortization of prior service cost	0	0	0	0
Settlements	0	0	0	0
Non-service (benefit) cost	(4)	(6)	(11)	(16)
Net periodic benefit cost (benefit)	(2)	(5)	(5)	(13)
UNITED STATES | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	0	0	0	0
Interest cost	35	21	103	64
Expected return on plan assets	(56)	(70)	(168)	(212)
Defined Benefit Plan, Amortization of Gain (Loss)	0	0	0	0
Amortization of prior service cost	0	0	0	0
Settlements	3	0	3	0
Non-service (benefit) cost	(18)	(49)	(62)	(148)
Net periodic benefit cost (benefit)	$ (18)	$ (49)	$ (62)	$ (148)

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Other Income and Expense (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Equity in net income of partially-owned entities		$ 150	$ (111)	$ 610	$ 180
Gains (losses) from fair value changes in separate account assets	[1]	(19)	(67)	(56)	(116)
Huatai asset management non-premium revenue		55	0	55	0
Huatai asset management non-premium expense		(33)	0	(33)	0
Federal excise and capital taxes		(6)	(6)	(17)	(15)
Other		7	18	9	40
Total		154	(202)	550	9
Partially-owned Investment Companies
Unrealized Gain (Loss) on Investments		$ 51	(190)	290	(69)
Huatai Group
Equity in net income of partially-owned entities			$ 28	$ 36	$ 83

[1] Related to gains (losses) from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP.

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Segment information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Net premiums written	$ 13,104	$ 12,012	$ 35,765	$ 31,494
Net premiums earned	12,674	11,530	33,815	29,816
Losses and loss expenses	7,106	7,063	17,937	16,833
Policy benefits (includes remeasurement gains of $25, $17, $21, and $11)	938	707	2,565	1,441
Policy acquisition costs	2,178	1,970	6,142	5,415
Administrative expenses	1,060	883	2,959	2,479
Underwriting income (loss)	1,392	907	4,212	3,648
Net investment income (loss)	1,314	979	3,566	2,689
Other (income) expense	(154)	202	(550)	(9)
Amortization of purchased intangibles	84	69	226	211
Segment Income (loss)	2,776	1,615	8,102	6,135
Net realized gains (losses)	(103)	(456)	(484)	(936)
Market risk benefits gains (losses)	(32)	69	(154)	85
Interest Income (Expense), Net	174	150	499	416
Cigna integration expenses	14	23	51	26
Income tax expense	413	263	1,189	907
Net Income	2,040	792	5,725	3,935
Net loss attributable to noncontrolling interests	(3)	0	(3)	0
Net income (loss)	2,043	792	5,728	3,935
North America Commercial P&C Insurance [Member]
Segment Reporting Information [Line Items]
Net premiums written	5,132	4,722	14,575	13,426
Net premiums earned	4,735	4,283	13,710	12,645
Losses and loss expenses	3,025	3,036	8,625	7,979
Policy benefits (includes remeasurement gains of $25, $17, $21, and $11)	0	0	0	0
Policy acquisition costs	640	583	1,867	1,701
Administrative expenses	323	272	934	814
Underwriting income (loss)	747	392	2,284	2,151
Net investment income (loss)	780	589	2,204	1,600
Other (income) expense	6	6	18	12
Amortization of purchased intangibles	0	0	0	0
Segment Income (loss)	1,521	975	4,470	3,739
North American Personal P&C Insurance [Member]
Segment Reporting Information [Line Items]
Net premiums written	1,527	1,392	4,404	3,998
Net premiums earned	1,407	1,334	4,084	3,852
Losses and loss expenses	900	857	2,634	2,343
Policy benefits (includes remeasurement gains of $25, $17, $21, and $11)	0	0	0	0
Policy acquisition costs	287	274	836	792
Administrative expenses	84	71	247	213
Underwriting income (loss)	136	132	367	504
Net investment income (loss)	94	76	262	199
Other (income) expense	2	1	2	3
Amortization of purchased intangibles	3	2	8	7
Segment Income (loss)	225	205	619	693
North America Agricultural Insurance [Member]
Segment Reporting Information [Line Items]
Net premiums written	1,521	1,723	2,581	2,523
Net premiums earned	1,540	1,673	2,334	2,217
Losses and loss expenses	1,356	1,444	2,003	1,830
Policy benefits (includes remeasurement gains of $25, $17, $21, and $11)	0	0	0	0
Policy acquisition costs	76	68	128	111
Administrative expenses	3	3	9	4
Underwriting income (loss)	105	158	194	272
Net investment income (loss)	12	9	43	23
Other (income) expense	0	1	0	1
Amortization of purchased intangibles	6	7	19	20
Segment Income (loss)	111	159	218	274
Overseas General Insurance [Member]
Segment Reporting Information [Line Items]
Net premiums written	3,211	2,645	9,359	8,364
Net premiums earned	3,311	2,741	9,005	8,065
Losses and loss expenses	1,635	1,333	4,139	3,772
Policy benefits (includes remeasurement gains of $25, $17, $21, and $11)	91	108	338	282
Policy acquisition costs	827	720	2,286	2,096
Administrative expenses	327	264	899	811
Underwriting income (loss)	431	316	1,343	1,104
Net investment income (loss)	248	151	636	460
Other (income) expense	(10)	(2)	(29)	3
Amortization of purchased intangibles	19	12	52	40
Segment Income (loss)	670	457	1,956	1,521
Global Reinsurance [Member]
Segment Reporting Information [Line Items]
Net premiums written	261	265	831	780
Net premiums earned	239	255	720	712
Losses and loss expenses	116	311	319	565
Policy benefits (includes remeasurement gains of $25, $17, $21, and $11)	0	0	0	0
Policy acquisition costs	69	59	196	178
Administrative expenses	9	8	27	27
Underwriting income (loss)	45	(123)	178	(58)
Net investment income (loss)	47	71	144	232
Other (income) expense	0	0	(1)	1
Amortization of purchased intangibles	0	0	0	0
Segment Income (loss)	92	(52)	323	173
Life Insurance [Member]
Segment Reporting Information [Line Items]
Net premiums written	1,452	1,265	4,015	2,403
Net premiums earned	1,442	1,244	3,962	2,325
Losses and loss expenses	20	27	87	78
Policy benefits (includes remeasurement gains of $25, $17, $21, and $11)	866	666	2,283	1,275
Policy acquisition costs	279	266	829	537
Administrative expenses	216	174	553	346
Underwriting income (loss)	61	111	210	89
Net investment income (loss)	211	147	525	359
Other (income) expense	(28)	4	(69)	(38)
Amortization of purchased intangibles	12	2	18	7
Segment Income (loss)	288	252	786	479
Segment Corporate and Other
Segment Reporting Information [Line Items]
Net premiums written	0	0	0	0
Net premiums earned	0	0	0	0
Losses and loss expenses	61	74	133	275
Policy benefits (includes remeasurement gains of $25, $17, $21, and $11)	0	0	0	0
Policy acquisition costs	0	0	0	0
Administrative expenses	98	91	290	264
Underwriting income (loss)	(159)	(165)	(423)	(539)
Net investment income (loss)	14	5	28	(4)
Other (income) expense	(51)	194	(251)	73
Amortization of purchased intangibles	44	46	129	137
Segment Income (loss)	(138)	(400)	(273)	(753)
Net realized gains (losses)	(96)	(437)	(481)	(927)
Market risk benefits gains (losses)	(32)	69	(154)	85
Interest Income (Expense), Net	174	150	499	416
Cigna integration expenses	14	23	51	26
Income tax expense	413	263	1,189	907
Net Income	(867)	(1,204)	(2,647)	(2,944)
Net loss attributable to noncontrolling interests	(3)		(3)
Net income (loss)	(864)		(2,644)
Segment Measure Reconciling Items
Segment Reporting Information [Line Items]
Net premiums written	0	0	0	0
Net premiums earned	0	0	0	0
Losses and loss expenses	(7)	(19)	(3)	(9)
Policy benefits (includes remeasurement gains of $25, $17, $21, and $11)	(19)	(67)	(56)	(116)
Policy acquisition costs	0	0	0	0
Administrative expenses	0	0	0	0
Underwriting income (loss)	26	86	59	125
Net investment income (loss)	(92)	(69)	(276)	(180)
Other (income) expense	(73)	(2)	(220)	(64)
Amortization of purchased intangibles	0	0	0	0
Segment Income (loss)	7	19	3	9
Net realized gains (losses)	(7)	(19)	(3)	(9)
Market risk benefits gains (losses)	0	0	0	0
Interest Income (Expense), Net	0	0	0	0
Cigna integration expenses	0	0	0	0
Income tax expense	0	0	0	0
Net Income	0	$ 0	0	$ 0
Net loss attributable to noncontrolling interests	0		0
Net income (loss)	$ 0		$ 0

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Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income	$ 2,040	$ 792	$ 5,725	$ 3,935
Net loss attributable to noncontrolling interests	(3)	0	(3)	0
Net income (loss)	$ 2,043	$ 792	$ 5,728	$ 3,935
Weighted-average shares outstanding	409,505,454	416,542,101	412,076,470	421,290,032
Share-based compensation plans	3,100,505	3,076,855	3,288,940	3,733,449
Weighted-average shares outstanding and assumed conversions	412,605,959	419,618,956	415,365,410	425,023,481
Basic earnings (loss) per share (US$ per share)	$ 4.99	$ 1.90	$ 13.90	$ 9.34
Diluted earnings (loss) per share (US$ per share)	$ 4.95	$ 1.89	$ 13.79	$ 9.26
Potential anti-dilutive share conversions	2,562,206	1,693,502	2,330,821	1,377,784