Income Taxes Income Taxes - Effective Tax Rates Differing From Prevailing Federal Corporate Income Tax Rates (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Effective Tax Rates [Line Items]
Tax on income from continuing operations at statutory rate	$ 0	$ (92)	$ (38)
Tax on income from continuing operations at statutory rate,tax rate	21.00%	21.00%	21.00%
Tax-exempt interest	$ (2)	$ (2)	$ (3)
Tax-exempt interest, tax rate	(114.00%)	0.00%	2.00%
Derivative, Gain (Loss) on Derivative, Net	$ 22	$ (50)	$ (50)
Valuation allowance	$ (4)	$ 113	$ 8
Valuation allowance, tax rate	(230.00%)	(26.00%)	(4.00%)
Other, net	$ 1	$ 2	$ 0
Foreign taxes	$ 8	$ 6	$ 40
Foreign taxes, tax rate	448.00%	(1.00%)	(22.00%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	$ 14	$ 0	$ (2)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	794.00%	0.00%	1.00%
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount		$ (29)	$ 28
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Percent		7.00%	(15.00%)
Other, net, tax rate	72.00%	0.00%	0.00%
Income tax expense (benefit)	$ 18	$ (3)	$ 32
Effective Income Tax Rate Reconciliation, Percent	991.00%	1.00%	(18.00%)
Variable Interest Entity, Primary Beneficiary [Member] \| Income Loss On Variable Interest Entities [Member]
Reconciliation of Effective Tax Rates [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (150)	$ (144)	$ (32)
Variable Interest Entity, Primary Beneficiary [Member] \| Currency Swaps [Member] \| Income Loss On Variable Interest Entities [Member]
Reconciliation of Effective Tax Rates [Line Items]
Derivative, Gain (Loss) on Derivative, Net	2	(6)	(12)
Variable Interest Entity, Primary Beneficiary [Member] \| Interest Rate Swaps [Member] \| Income Loss On Variable Interest Entities [Member]
Reconciliation of Effective Tax Rates [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (152)	$ (138)	$ (20)

[Line Items] for Reconciliation of Effective Tax Rates [Table]

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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