CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 795	$ 549
Adjustments to reconcile net income to net cash provided by operating activities:
Decrease (increase) in premiums receivable	(407)	(363)
Decrease (increase) in funds held by reinsureds, net	(29)	20
Decrease (increase) in reinsurance recoverables	(19)	(4)
Decrease (increase) in income taxes	1	65
Decrease (increase) in prepaid reinsurance premiums	(79)	(57)
Increase (decrease) in reserve for losses and loss adjustment expenses	417	526
Increase (decrease) in unearned premiums	383	319
Increase (decrease) in amounts due to reinsurers	196	70
Increase (decrease) in losses in course of payment	47	(5)
Change in equity adjustments in limited partnerships	(109)	(21)
Distribution of limited partnership income	37	23
Change in other assets and liabilities, net	(240)	(215)
Non-cash compensation expense	27	19
Amortization of bond premium (accrual of bond discount)	(40)	(11)
Net (gains) losses on investments	37	0
Net cash provided by (used in) operating activities	1,017	914
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from fixed maturities matured/called/repaid - available for sale	1,133	543
Proceeds from fixed maturities sold - available for sale	649	109
Proceeds from fixed maturities matured/called/repaid - held to maturity	106	43
Proceeds from equity securities sold	13	46
Distributions from other invested assets	139	60
Cost of fixed maturities acquired - available for sale	(2,706)	(2,100)
Cost of fixed maturities acquired - held to maturity	(36)	(15)
Cost of equity securities acquired	(2)	(1)
Cost of other invested assets acquired	(177)	(161)
Net change in short-term investments	(129)	(269)
Net change in unsettled securities transactions	(9)	13
Proceeds from repayment (cost of issuance) of notes receivable - affiliated	0	840
Net cash provided by (used in) investing activities	(1,020)	(892)
CASH FLOWS FROM FINANCING ACTIVITIES:
Tax benefit from share-based compensation, net of expense	0	(19)
Net cash provided by (used in) financing activities	0	(19)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	(13)	(6)
Net increase (decrease) in cash	(15)	(3)
Cash, beginning of period	527	481
Cash, end of period	512	478
SUPPLEMENTAL CASH FLOW INFORMATION:
Income taxes paid (recovered)	197	71
Interest paid	74	64
NON-CASH TRANSACTIONS
Non-cash limited partnership distribution	$ 21	$ 0