Segment Reporting (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Premiums Earned, Net	$ 56	$ 47	$ 54
Insurance Commissions and Fees	31	26
Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset	3	0	0
Net Investment Income	17	139	122
Realized Investment Gains (Losses)	31	7	22
Derivative, Gain (Loss) on Derivative, Net	129	22	(50)
Net realized gains on extinguishment of debt	81	33	0
Other income Items	31	8
Losses and loss adjustment expenses (benefit)		(88)	225
Deferred Policy Acquisition Costs, Amortization Expense	3	1	0
Insurance Commissions	18	15
Operating Expenses	139	110
Depreciation	2	2	1
Amortization of intangible assets	47	55	57
Interest Expense	168	187
Benefits, Losses and Expenses	(20)	281	596
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	525	2
Assets	7,973	12,303
Gain (Loss) Related to Litigation Settlement	126	0
Revenues	505	282	$ 156
Policyholder Benefits and Claims Incurred, Net	(396)
Legacy Financial Guarantee
Premiums Earned, Net	42	46
Net Investment Income	12	138
Realized Investment Gains (Losses)	32	3
Derivative, Gain (Loss) on Derivative, Net	128	22
Net realized gains on extinguishment of debt	81	33
Other income Items	30	8
Losses and loss adjustment expenses (benefit)		(89)
Deferred Policy Acquisition Costs, Amortization Expense	0	0
Operating Expenses	102	77
Depreciation	2	2
Amortization of intangible assets	44	52
Interest Expense	168	187
Benefits, Losses and Expenses	(89)	230
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	540	20
Assets	7,292	11,871
Gain (Loss) Related to Litigation Settlement	126	0
Revenues	451	250
Policyholder Benefits and Claims Incurred, Net	(406)
Corporate and Other
Net Investment Income	3	1
Realized Investment Gains (Losses)	0
Derivative, Gain (Loss) on Derivative, Net	1
Other income Items	0	0
Operating Expenses	17	19
Depreciation	0	0
Benefits, Losses and Expenses	17	19
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(14)	(15)
Assets	226	182
Revenues	4	5
Property and Casualty, Commercial Insurance
Premiums Earned, Net	14	1
Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset	3	0
Net Investment Income	2	1
Other income Items	0	0
Losses and loss adjustment expenses (benefit)		0
Deferred Policy Acquisition Costs, Amortization Expense	3	0
Operating Expenses	13	9
Depreciation	0	0
Benefits, Losses and Expenses	25	9
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(6)	(8)
Assets	316	156
Revenues	18	2
Policyholder Benefits and Claims Incurred, Net	9	0
Insurance Distribution
Insurance Commissions and Fees	31	26
Other income Items	1	0
Insurance Commissions	18	15
Operating Expenses	6	5
Depreciation	0	0
Amortization of intangible assets	3	3
Benefits, Losses and Expenses	27	22
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	5	4
Assets	138	93
Revenues	$ 31	$ 26