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Expected Loss to be Paid (Recovered) - Net Expected Loss to be Paid (Recovered) and Net Economic Loss Development (Benefit) by Accounting Model (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Schedule of Expected Losses to be Paid [Line Items]
Net Expected Loss to be Paid (Recovered)	$ 432	$ 472	$ 411	$ 529
Net economic loss development (benefit)	(44)	13
Insurance
Schedule of Expected Losses to be Paid [Line Items]
Net Expected Loss to be Paid (Recovered)	388		364
Net economic loss development (benefit)	(44)	16
FG VIEs and other
Schedule of Expected Losses to be Paid [Line Items]
Net Expected Loss to be Paid (Recovered)	38		42
Net economic loss development (benefit)	(4)	(6)
Credit derivatives
Schedule of Expected Losses to be Paid [Line Items]
Net Expected Loss to be Paid (Recovered)	6		$ 5
Net economic loss development (benefit)	$ 4	$ 3