Consolidated Statements Of Cash Flows - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net income (loss)		$ 1,974	$ 2,300
Adjustments to reconcile net income to net cash flows from operating activities
Net realized (gains) losses		(101)	(887)
Amortization of premiums/discounts on fixed maturities		91	76
Amortization of purchased intangibles		71	72
Deferred income taxes		93	0
Unpaid losses and loss expenses		957	1,368
Unearned premiums		502	503
Future policy benefits		36	47
Insurance and reinsurance balances payable		147	(36)
Accounts payable, accrued expenses, and other liabilities		(338)	(663)
Income taxes payable		128	101
Insurance and reinsurance balances receivable		(125)	(209)
Reinsurance recoverable		(456)	(290)
Deferred policy acquisition costs		(96)	(81)
Income (Loss) from Equity Method Investments	[1]	(361)	(497)
Other		(82)	301
Net cash flows from operating activities		2,440	2,105
Cash flows from investing activities
Purchases of fixed maturities available for sale		(5,933)	(7,738)
Purchases of fixed maturities held to maturity		(143)	(102)
Purchases of equity securities		(380)	(351)
Sales of fixed maturities available for sale		1,838	1,343
Sales of equity securities		1,110	351
Maturities and redemptions of fixed maturities available for sale		3,003	4,289
Maturities and redemptions of fixed maturities held to maturity		398	604
Net change in short-term investments		(267)	595
Net derivative instruments settlements		74	87
Private equity contribution		(669)	(427)
Private equity distribution		207	206
Payment, including deposit, for Huatai Group Interest		(113)	(65)
Other		(120)	(44)
Net cash flows used for investing activities		(995)	(1,252)
Cash flows from financing activities
Dividends paid on Common Shares		(341)	(352)
Common Shares repurchased		(1,001)	(519)
Proceeds from issuance of repurchase agreements		146	450
Repayment of repurchase agreements		(146)	(450)
Proceeds from share-based compensation plans		114	115
Policyholder contract deposits and other		118	133
Policyholder contract withdrawals and other		(111)	(124)
Payment, Tax Withholding, Share-based Payment Arrangement		(81)	(65)
Net cash flows used for financing activities		(1,302)	(812)
Effect of foreign currency rate changes on cash and restricted cash		(40)	(36)
Net increase (decrease) in cash and restricted cash		103	5
Cash and restricted cash - beginning of period		1,811	1,836
Cash and restricted cash - end of period		1,914	1,841
Supplemental cash flow information
Taxes paid		132	236
Interest paid		$ 85	$ 90

[1] Equity in net income of partially-owned entities includes $40 million and $49 million attributable to our investments in Huatai (Huatai Group, Huatai P&C, and Huatai Life) for the three months ended March 31, 2022 and 2021, respectively.