Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities
Net income	$ 4,510	$ 3,685
Adjustments to reconcile net income to net cash flows from operating activities
Net realized (gains) losses	(3)	381
Market risk benefits (gains) losses	8	122
Amortization of premiums (discounts) on fixed maturities	(178)	(38)
Amortization of purchased intangibles	160	142
Equity in net income (loss) of partially-owned entities	(278)	(460)
Deferred income taxes	131	43
Unpaid losses and loss expenses	2,338	561
Unearned premiums	2,214	1,913
Future policy benefits	954	351
Insurance and reinsurance balances payable	838	588
Accounts payable, accrued expenses, and other liabilities	(410)	(388)
Income taxes	(144)	(38)
Insurance and reinsurance balances receivable	(2,666)	(2,044)
Reinsurance recoverable	511	455
Deferred policy acquisition costs	(796)	(546)
Net sales (purchases) of investments by consolidated investment products	109	0
Other	1	39
Net cash flows from operating activities	7,299	4,766
Cash flows from investing activities
Purchases of fixed maturities available-for-sale	(15,131)	(12,800)
Purchases of fixed maturities held-to-maturity	0	(208)
Purchases of equity securities	(1,778)	(240)
Sales of fixed maturities available-for-sale	6,292	7,229
Sales of equity securities	1,413	81
Maturities and redemptions of fixed maturities available-for-sale	4,705	3,203
Maturities and redemptions of fixed maturities held-to-maturity	0	708
Net change in short-term investments	(190)	898
Net derivative instruments settlements	(31)	(63)
Private equity contributions	(500)	(1,046)
Private equity distributions	538	568
Acquisition of subsidiaries	(538)	(252)
Other	(846)	(340)
Net cash flows used for investing activities	(6,066)	(2,262)
Cash flows from financing activities
Proceeds from issuance of long-term debt	996	0
Dividends paid on Common Shares	(698)	(688)
Common Shares repurchased	(1,056)	(1,267)
Proceeds from issuance of repurchase agreements	2,662	3,774
Repayment of long-term debt	(700)	(475)
Repayment of repurchase agreements	(2,418)	(3,674)
Proceeds from share-based compensation plans	242	102
Policyholder contract deposits	562	170
Policyholder contract withdrawals	(374)	(101)
Third-party capital invested into consolidated investment products	840	0
Third-party capital distributed by consolidated investment products	(1,047)	0
Other	(193)	(153)
Net cash flows used for financing activities	(1,184)	(2,312)
Effect of foreign currency rate changes on cash and restricted cash	(102)	56
Net increase (decrease) in cash and restricted cash	(53)	248
Cash and restricted cash - beginning of period	2,621	2,127
Cash and restricted cash - end of period	2,568	2,375
Supplemental cash flow information
Taxes paid	845	753
Interest paid	$ 316	$ 306