Derivative Financial Instruments - Offsetting Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Offsetting Assets and Liabilities [Line Items]
Asset Fair Value	$ 489	$ 171
Liability Fair Value	382	231
Counterparty netting, Assets	(310)	(156)
Counterparty netting, Liabilities	(310)	(156)
Cash collateral netting, Assets	(121)	(12)
Cash collateral netting, Liabilities	(63)	(70)
Securities collateral netting, Assets	(11)	(2)
Securities collateral netting, Liabilities	(1)	(2)
Net receivables/payables, Assets	47	1
Net receivables/payables, Liabilities	8	3
Equity contracts
Offsetting Assets and Liabilities [Line Items]
Notional Amount	197	239
Asset Fair Value	1	4
Liability Fair Value	6	2
Foreign exchange contracts
Offsetting Assets and Liabilities [Line Items]
Notional Amount	941	923
Asset Fair Value	135	19
Liability Fair Value	3	19
Interest rate contracts
Offsetting Assets and Liabilities [Line Items]
Notional Amount	13,439	12,003
Asset Fair Value	353	147
Liability Fair Value	370	209
Credit contracts
Offsetting Assets and Liabilities [Line Items]
Notional Amount	177	135
Asset Fair Value	0	1
Liability Fair Value	$ 3	$ 1

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[Line Items] for Offsetting Assets and Liabilities [Table]

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