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Supplemental Cash Flow Information - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Cash paid for:
Interest	$ 170	$ 154
Income taxes	186	153
Deferred sales inducements	241	219
Non-cash investing and financing activities:
Investments transferred subject to reinsurance agreement	(500)	0
Change in proceeds of sales of investments available for sale receivable in period	(4)	(69)
Change in purchases of investments available for sale payable in period	144	639
Lease liabilities recognized in exchange for lease right-of-use assets	33	35
Remeasurement of lease liabilities	45	55
Liabilities assumed in connection with acquisitions
Fair value of assets acquired	6	771
Less: Total Purchase price	4	570
Liabilities and noncontrolling interests assumed	$ 2	$ 201

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