Segment information

6 Months Ended

Jun. 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. Segment results for the three and six months ended June 30, 2023, include the results of Cigna's business in Asia, which are principally assigned to our Life Insurance segment and, to a lesser extent, our 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, and income tax 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 June 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	$	5,155	$	1,581	$	767	$	2,885	$	293	$	1,270	$	—	$	—	$	11,951
Net premiums earned	4,606		1,357		635		2,908		237		1,256		—		—		10,999
Losses and loss expenses	2,871		846		507		1,267		91		35		61		5		5,683
Policy benefits	—		—		—		137		—		705		—		(12)		830
Policy acquisition costs	614		277		37		746		65		277		—		—		2,016
Administrative expenses	316		84		3		292		9		170		95		—		969
Underwriting income (loss)	805		150		88		466		72		69		(156)		7		1,501
Net investment income	726		86		14		200		48		161		3		(93)		1,145
Other (income) expense	5		(1)		(1)		(10)		—		(26)		14		(81)		(100)
Amortization expense of    purchased intangibles	—		3		7		15		—		2		43		—		70
Segment income (loss)	$	1,526	$	234	$	96	$	661	$	120	$	254	$	(210)	$	(5)	$	2,676
Net realized gains (losses)													(309)		5		(304)
Market risk benefits gains (losses)													(7)		—		(7)
Interest expense													165		—		165
Cigna integration expenses													15		—		15
Income tax expense													392		—		392
Net income (loss)													$	(1,098)	$	—	$	1,793

For the Three Months Ended June 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	$	4,665	$	1,426	$	738	$	2,640	$	262	$	562	$	—	$	—	$	10,293
Net premiums earned	4,248		1,271		573		2,696		222		539		—		—		9,549
Losses and loss expenses	2,446		773		478		1,143		139		27		191		9		5,206
Policy benefits	—		—		—		81		—		298		—		(18)		361
Policy acquisition costs	545		258		31		697		57		138		—		—		1,726
Administrative expenses	277		73		2		278		10		88		90		—		818
Underwriting income (loss)	980		167		62		497		16		(12)		(281)		9		1,438
Net investment income (loss)	522		64		7		162		76		109		(4)		(48)		888
Other (income) expense	—		1		—		3		1		(12)		138		(30)		101
Amortization expense of    purchased intangibles	—		3		6		14		—		3		45		—		71
Segment income (loss)	$	1,502	$	227	$	63	$	642	$	91	$	106	$	(468)	$	(9)	$	2,154
Net realized gains (losses)													(512)		9		(503)
Market risk benefits gains (losses)													(33)		—		(33)
Interest expense													134		—		134
Cigna integration expenses													3		—		3
Income tax expense													291		—		291
Net income (loss)													$	(1,441)	$	—	$	1,190

For the Six Months Ended June 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	$	9,443	$	2,877	$	1,060	$	6,148	$	570	$	2,563	$	—	$	—	$	22,661
Net premiums earned	8,975		2,677		794		5,694		481		2,520		—		—		21,141
Losses and loss expenses	5,600		1,734		647		2,504		203		67		72		4		10,831
Policy benefits	—		—		—		247		—		1,417		—		(37)		1,627
Policy acquisition costs	1,227		549		52		1,459		127		550		—		—		3,964
Administrative expenses	611		163		6		572		18		337		192		—		1,899
Underwriting income (loss)	1,537		231		89		912		133		149		(264)		33		2,820
Net investment income	1,424		168		31		388		97		314		14		(184)		2,252
Other (income) expense	12		—		—		(19)		(1)		(41)		(200)		(147)		(396)
Amortization expense of    purchased intangibles	—		5		13		33		—		6		85		—		142
Segment income (loss)	$	2,949	$	394	$	107	$	1,286	$	231	$	498	$	(135)	$	(4)	$	5,326
Net realized gains (losses)													(385)		4		(381)
Market risk benefits gains (losses)													(122)		—		(122)
Interest expense													325		—		325
Cigna integration expenses													37		—		37
Income tax expense													776		—		776
Net income (loss)													$	(1,780)	$	—	$	3,685

For the Six Months Ended June 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	$	8,704	$	2,606	$	800	$	5,719	$	515	$	1,138	$	—	$	—	$	19,482
Net premiums earned	8,362		2,518		544		5,324		457		1,081		—		—		18,286
Losses and loss expenses	4,943		1,486		386		2,439		254		51		201		10		9,770
Policy benefits	—		—		—		174		—		609		—		(49)		734
Policy acquisition costs	1,118		518		43		1,376		119		271		—		—		3,445
Administrative expenses	542		142		1		547		19		172		173		—		1,596
Underwriting income (loss)	1,759		372		114		788		65		(22)		(374)		39		2,741
Net investment income (loss)	1,011		123		14		309		161		212		(9)		(111)		1,710
Other (income) expense	6		2		—		5		1		(42)		(121)		(62)		(211)
Amortization expense of    purchased intangibles	—		5		13		28		—		5		91		—		142
Segment income (loss)	$	2,764	$	488	$	115	$	1,064	$	225	$	227	$	(353)	$	(10)	$	4,520
Net realized gains (losses)													(490)		10		(480)
Market risk benefits gains (losses)													16		—		16
Interest expense													266		—		266
Cigna integration expenses													3		—		3
Income tax expense													644		—		644
Net income (loss)													$	(1,740)	$	—	$	3,143

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.