Other Comprehensive Income - Changes in AOCI by Component (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ 5,292	$ 6,478	$ 6,684
Less: Amounts reclassified from AOCI to:
Net realized investment gains (losses)	(14)	(56)	15
Interest expense	(90)	(81)	(87)
Income (loss) before income taxes	668	148	477
Tax (provision) benefit	93	(11)	(58)
Other comprehensive income (loss)	156	(815)	(198)
Ending balance	5,765	5,292	6,478
Total  AOCI
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(515)	300	498
Other comprehensive income (loss) before reclassifications	136	(871)	(187)
Less: Amounts reclassified from AOCI to:
Total amount reclassified from AOCI, net of tax	(20)	(56)	11
Other comprehensive income (loss)	156	(815)	(198)
Ending balance	(359)	(515)	300
Total  AOCI | Reclassification out of Accumulated Other Comprehensive Income
Less: Amounts reclassified from AOCI to:
Net realized investment gains (losses)	(14)	(65)	14
Fair value gains (losses) on FG VIEs	(3)	(3)	(3)
Interest expense	1		1
Income (loss) before income taxes	(22)	(68)	12
Tax (provision) benefit	2	12	(1)
Total  AOCI | Reclassification out of Accumulated Other Comprehensive Income | Consolidated Investment Vehicles
Less: Amounts reclassified from AOCI to:
Fair value gains (losses) on FG VIEs	(6)
Net Unrealized Gains (Losses) on Investments with: No Credit Impairment
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(343)	375	577
Other comprehensive income (loss) before reclassifications	139	(755)	(184)
Less: Amounts reclassified from AOCI to:
Total amount reclassified from AOCI, net of tax	(2)	(37)	18
Other comprehensive income (loss)	141	(718)	(202)
Ending balance	(202)	(343)	375
Net Unrealized Gains (Losses) on Investments with: No Credit Impairment | Reclassification out of Accumulated Other Comprehensive Income
Less: Amounts reclassified from AOCI to:
Net realized investment gains (losses)	(1)	(44)	21
Fair value gains (losses) on FG VIEs	0	0	0
Interest expense	0		0
Income (loss) before income taxes	(1)	(44)	21
Tax (provision) benefit	(1)	7	(3)
Net Unrealized Gains (Losses) on Investments with: No Credit Impairment | Reclassification out of Accumulated Other Comprehensive Income | Consolidated Investment Vehicles
Less: Amounts reclassified from AOCI to:
Fair value gains (losses) on FG VIEs	0
Net Unrealized Gains (Losses) on Investments with: Credit Impairment
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(110)	(24)	(30)
Other comprehensive income (loss) before reclassifications	(5)	(103)	0
Less: Amounts reclassified from AOCI to:
Total amount reclassified from AOCI, net of tax	(11)	(17)	(6)
Other comprehensive income (loss)	6	(86)	6
Ending balance	(104)	(110)	(24)
Net Unrealized Gains (Losses) on Investments with: Credit Impairment | Reclassification out of Accumulated Other Comprehensive Income
Less: Amounts reclassified from AOCI to:
Net realized investment gains (losses)	(13)	(21)	(7)
Fair value gains (losses) on FG VIEs	0	0	0
Interest expense	0		0
Income (loss) before income taxes	(13)	(21)	(7)
Tax (provision) benefit	2	4	1
Net Unrealized Gains (Losses) on Investments with: Credit Impairment | Reclassification out of Accumulated Other Comprehensive Income | Consolidated Investment Vehicles
Less: Amounts reclassified from AOCI to:
Fair value gains (losses) on FG VIEs	0
ISCR on FG VIEs’ Liabilities with Recourse
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(23)	(21)	(20)
Other comprehensive income (loss) before reclassifications	0	(4)	(3)
Less: Amounts reclassified from AOCI to:
Total amount reclassified from AOCI, net of tax	(3)	(2)	(2)
Other comprehensive income (loss)	3	(2)	(1)
Ending balance	(20)	(23)	(21)
ISCR on FG VIEs’ Liabilities with Recourse | Reclassification out of Accumulated Other Comprehensive Income
Less: Amounts reclassified from AOCI to:
Net realized investment gains (losses)	0	0	0
Fair value gains (losses) on FG VIEs	(3)	(3)	(3)
Interest expense	0		0
Income (loss) before income taxes	(3)	(3)	(3)
Tax (provision) benefit	0	1	1
ISCR on FG VIEs’ Liabilities with Recourse | Reclassification out of Accumulated Other Comprehensive Income | Consolidated Investment Vehicles
Less: Amounts reclassified from AOCI to:
Fair value gains (losses) on FG VIEs	0
Cumulative Translation Adjustment
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(45)	(36)	(36)
Other comprehensive income (loss) before reclassifications	2	(9)	0
Less: Amounts reclassified from AOCI to:
Total amount reclassified from AOCI, net of tax	(5)	0	0
Other comprehensive income (loss)	7	(9)	0
Ending balance	(38)	(45)	(36)
Cumulative Translation Adjustment | Reclassification out of Accumulated Other Comprehensive Income
Less: Amounts reclassified from AOCI to:
Net realized investment gains (losses)	0	0	0
Fair value gains (losses) on FG VIEs	0	0	0
Interest expense	0		0
Income (loss) before income taxes	(6)	0	0
Tax (provision) benefit	1	0	0
Cumulative Translation Adjustment | Reclassification out of Accumulated Other Comprehensive Income | Consolidated Investment Vehicles
Less: Amounts reclassified from AOCI to:
Fair value gains (losses) on FG VIEs	(6)
Cash  Flow  Hedge
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	6	6	7
Other comprehensive income (loss) before reclassifications	0	0	0
Less: Amounts reclassified from AOCI to:
Total amount reclassified from AOCI, net of tax	1	0	1
Other comprehensive income (loss)	(1)	0	(1)
Ending balance	5	6	6
Cash  Flow  Hedge | Reclassification out of Accumulated Other Comprehensive Income
Less: Amounts reclassified from AOCI to:
Net realized investment gains (losses)	0	0	0
Fair value gains (losses) on FG VIEs	0	0	0
Interest expense	1		1
Income (loss) before income taxes	1	0	1
Tax (provision) benefit	0	$ 0	$ 0
Cash  Flow  Hedge | Reclassification out of Accumulated Other Comprehensive Income | Consolidated Investment Vehicles
Less: Amounts reclassified from AOCI to:
Fair value gains (losses) on FG VIEs	$ 0