Investments - Net Realized Gains and Losses on Available-for-Sale Securities (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disposal group \| AAH
Net realized gains and losses on Available-for-Sale securities
Other impairments	$ (5)
Ameriprise Financial
Net realized gains and losses on Available-for-Sale securities
Gross realized investment gains		$ 582	$ 25	$ 30
Gross realized investment losses		(7)	(3)	(14)
Credit losses		(1)	(11)	(22)
Other impairments		(13)
Total		$ 561	$ 11	$ (6)

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Amount of expense (reversal of expense) for expected credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), from change in present value of expected cash flows.

+ References

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-Publisher FASB
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Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), excluding other-than-temporary impairment (OTTI).

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Amount of other-than-temporary impairment (OTTI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized in earnings.

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