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		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Schedule of Expected Losses to be Paid [Line Items]
Net Expected Loss to be Paid (Recovered)	$ 442	$ 466	$ 442	$ 466	$ 432	$ 411	$ 472	$ 529
Net economic loss development (benefit)	(32)	(20)	(76)	(7)
Accretion of discount	3	2	5	3
Changes in discount rates	(42)	15	(89)	(33)
Changes in timing and assumptions	7	(37)	8	23
Net (paid) recovered losses	42	14	107	(56)
Insurance
Schedule of Expected Losses to be Paid [Line Items]
Net Expected Loss to be Paid (Recovered)	405		405			364
Net economic loss development (benefit)	(26)	(25)	(70)	(9)
FG VIEs' assets
Schedule of Expected Losses to be Paid [Line Items]
Net Expected Loss to be Paid (Recovered)	32		32			42
Net economic loss development (benefit)	(6)	(1)	(10)	(7)
Credit derivatives
Schedule of Expected Losses to be Paid [Line Items]
Net Expected Loss to be Paid (Recovered)	5		5			$ 5
Net economic loss development (benefit)	$ 0	$ 6	$ 4	$ 9