Deferred Acquisition Costs, Deferred Sales Inducements and Value of Business Acquired - Roll Forward of DAC, DSI, and VOBA (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Mar. 31, 2022	Jun. 30, 2022	Jun. 30, 2021
DAC
Beginning balance	$ 0		$ 3,236
Additions	434	$ 434	287
Amortization	(1)		(303)
Impact of unrealized investment (gains) losses		0	85
Ending balance		433	3,305
DSI
Beginning balance	0		857
Additions	162		115
Deferred sales inducement amortization expense excluding unlocking	0		(106)
Impact of unrealized investment (gains) losses		0	27
Ending balance		162	893
VOBA
Beginning balance	4,547		813
Additions	0		0
Amortization	(249)		(91)
Impact of unrealized investment (gains) losses		(3)	44
Ending balance		4,295	766
Total
Beginning balance	4,547	5,362	4,906
Additions	596		402
Amortization	$ (250)		(500)
Impact of unrealized investment (gains) losses		(3)	156
Ending balance		4,890	$ 4,964
Present Value of Future Insurance Profit
Present Value of Future Insurance Profits, Expected Amortization, Remainder of Fiscal Year		239
Present Value of Future Insurance Profits, Expected Amortization, Year One		447
Present Value of Future Insurance Profits, Expected Amortization, Year Two		410
Present Value of Future Insurance Profits, Expected Amortization, Year Three		377
Present Value of Future Insurance Profits, Expected Amortization, Year Four		342
Present Value of Future Insurance Profits, Expected Amortization, Year Five		$ 304

Deferred Policy Acquisition Costs, Deferred Sales Inducements, and Present Value of Future Profits

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Deferred Policy Acquisition Costs, Deferred Sales Inducements, and Present Value of Future Profits, Additions

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Deferred Policy Acquisition Costs, Deferred Sales Inducements, and Present Value of Future Profits, Amortization Expense Excluding Unlocking

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Deferred Policy Acquisition Costs, Deferred Sales Inducements, and Present Value of Future Profits [Roll Forward]

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Deferred Policy Acquisition Costs, Deferred Sales Inducements, and Present Value of Future Profits, Unrealized Investment Gains (Losses)

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Future Insurance Profit

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Amount of other increase (decrease) to amortization expense of deferred policy acquisition cost (DAC).

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Amount of unrealized investment gain (loss) which decreases (increases) deferred policy acquisition cost.

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Amount of deferred policy acquisition cost capitalized on contract remaining in force.

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Amount of deferred policy acquisition cost capitalized.

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Amount of unrealized investment gain (loss) which decreases (increases) deferred sales inducement cost.

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Amount of deferred sale inducement cost capitalized.

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Amount of deferred sale inducement cost capitalized on contract remaining in force.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of addition for present value of future profits of insurance contract acquired in business combination.

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Amount of amortization expense (reversal of expense) for present value of future profits of insurance contract acquired in business combination.

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Amount of amortization for present value of future profits of insurance contract acquired in business combination expected to be recognized in remainder of current fiscal year.

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Amount of amortization for present value of future profits of insurance contract acquired in business combination expected to be recognized during fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for present value of future profits of insurance contract acquired in business combination expected to be recognized during fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for present value of future profits of insurance contract acquired in business combination expected to be recognized during second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of unrealized investment gain (loss) which decreases (increases) present value of future profits of insurance contract acquired in business combination.

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