Derivative Financial Instruments - Offsetting Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Offsetting Assets and liabilities [Line Items]
Asset Fair Value	$ 240	$ 149
Liability Fair Value	251	144
Counterparty netting, Assets	(187)	(140)
Counterparty netting, Liabilities	(187)	(140)
Cash collateral netting, Assets	(46)	(7)
Cash collateral netting, Liabilities	(63)	(2)
Securities collateral netting, Assets	(6)	(2)
Securities collateral netting, Liabilities	(1)	(1)
Net receivables	1	0
Net payables	0	1
Foreign exchange contracts
Offsetting Assets and liabilities [Line Items]
Notional Amount	637	601
Asset Fair Value	53	14
Liability Fair Value	0	15
Interest rate contracts
Offsetting Assets and liabilities [Line Items]
Notional Amount	8,752	9,576
Asset Fair Value	187	135
Liability Fair Value	249	129
Credit contracts
Offsetting Assets and liabilities [Line Items]
Notional Amount	146	110
Asset Fair Value	0	0
Liability Fair Value	$ 2	$ 0

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

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