Fair Value Measurement - Fair Value Level 3 Rollforward Recurring Basis (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Credit Risk Contract
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair value at start of period	$ (154)	$ (100)
Total pre-tax realized and unrealized gains (losses) recorded in:
Net income (loss)	(3)	(19)
Other comprehensive income (loss)	0	0
Issuances	0	0
Settlements	1	(1)
Consolidations	0
Fair value at end of period	(156)	(120)
Change in unrealized gains/(losses) included in earnings related to financial instruments	(3)	(20)
FG VIEs’ Assets
Fair Value Level 3 Rollforward
Fair value at beginning of period	260	296
Total pre-tax realized and unrealized gains (losses) recorded in:
Net income (loss)	(3)	(1)
Other comprehensive income (loss)	(1)	0
Purchases	0	0
Sales	0	0
Settlements	(18)	(14)
Consolidations	29
Fair value at end of period	267	281
Change in unrealized gains/(losses) related to financial instruments held	(3)	0
FG VIEs’ Assets \| Other Comprehensive Income (Loss)
Total pre-tax realized and unrealized gains (losses) recorded in:
Change in unrealized gains/(losses) related to financial instruments held	(1)
Assets of Consolidated Investment Vehicles \| Corporate securities
Fair Value Level 3 Rollforward
Fair value at beginning of period	91
Total pre-tax realized and unrealized gains (losses) recorded in:
Net income (loss)	(1)
Other comprehensive income (loss)	0
Purchases	1
Sales	(8)
Settlements	0
Consolidations	0
Fair value at end of period	83
Change in unrealized gains/(losses) related to financial instruments held	(2)
Assets of Consolidated Investment Vehicles \| Equity securities and warrants
Fair Value Level 3 Rollforward
Fair value at beginning of period	239	2
Total pre-tax realized and unrealized gains (losses) recorded in:
Net income (loss)	10	2
Other comprehensive income (loss)	0	0
Purchases	0	8
Sales	(6)	(11)
Settlements	0	0
Consolidations	0
Fair value at end of period	243	1
Change in unrealized gains/(losses) related to financial instruments held	8	3
Other
Fair Value Level 3 Rollforward
Fair value at beginning of period	27	(54)
Total pre-tax realized and unrealized gains (losses) recorded in:
Net income (loss)	1	(18)
Other comprehensive income (loss)	0	1
Purchases	0	0
Sales	0	0
Settlements	0	0
Consolidations	0
Fair value at end of period	28	37
Change in unrealized gains/(losses) related to financial instruments held	1	(19)
Change in unrealized gains/(losses) included in OCI related to financial instruments	0
Other \| Other Comprehensive Income (Loss)
Total pre-tax realized and unrealized gains (losses) recorded in:
Change in unrealized gains/(losses) related to financial instruments held		1
FG VIEs' Liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value at start of period	(289)
Total Pretax Realized And Unrealized Gains (Losses) Recorded As Liabilities [Abstract]
Net income (loss)	15
Other comprehensive income (loss)	0
Issuances	0
Settlements	41
Consolidations	(102)
Fair value at end of period	(335)
Change in unrealized gains/(losses) included in earnings related to financial instruments	38
Change in unrealized gains/(losses) included in OCI related to financial instruments	0
FG VIEs'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value at start of period		(333)
Total Pretax Realized And Unrealized Gains (Losses) Recorded As Liabilities [Abstract]
Net income (loss)		3
Other comprehensive income (loss)		(1)
Issuances		0
Settlements		13
Fair value at end of period		(318)
Change in unrealized gains/(losses) included in earnings related to financial instruments		5
Change in unrealized gains/(losses) included in OCI related to financial instruments		(1)
Liabilities of CIVs
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value at start of period	(3,705)	(1,227)
Total Pretax Realized And Unrealized Gains (Losses) Recorded As Liabilities [Abstract]
Net income (loss)	64	6
Other comprehensive income (loss)	0	0
Issuances	(381)	(752)
Settlements	372	0
Consolidations	0
Fair value at end of period	(3,650)	(1,973)
Change in unrealized gains/(losses) included in earnings related to financial instruments	41	6
Obligations of state and political subdivisions \| Fixed-maturity securities, available-for-sale
Fair Value Level 3 Rollforward
Fair value at beginning of period	72	101
Total pre-tax realized and unrealized gains (losses) recorded in:
Net income (loss)	0	1
Other comprehensive income (loss)	(5)	2
Purchases	4	0
Sales	0	0
Settlements	(1)	(1)
Consolidations	0
Fair value at end of period	70	103
Change in unrealized gains/(losses) included in OCI related to financial instruments	(5)	2
Corporate securities \| Fixed-maturity securities, available-for-sale
Fair Value Level 3 Rollforward
Fair value at beginning of period		30
Total pre-tax realized and unrealized gains (losses) recorded in:
Net income (loss)		2
Other comprehensive income (loss)		(4)
Purchases		0
Sales		0
Settlements		0
Fair value at end of period		28
Change in unrealized gains/(losses) included in OCI related to financial instruments		(4)
RMBS \| Fixed-maturity securities, available-for-sale
Fair Value Level 3 Rollforward
Fair value at beginning of period	216	255
Total pre-tax realized and unrealized gains (losses) recorded in:
Net income (loss)	4	2
Other comprehensive income (loss)	(8)	0
Purchases	0	0
Sales	0	0
Settlements	(12)	(11)
Consolidations	0
Fair value at end of period	200	246
Change in unrealized gains/(losses) included in OCI related to financial instruments	(7)	0
Asset-backed securities \| Fixed-maturity securities, available-for-sale
Fair Value Level 3 Rollforward
Fair value at beginning of period	863	940
Total pre-tax realized and unrealized gains (losses) recorded in:
Net income (loss)	3	6
Other comprehensive income (loss)	(7)	5
Purchases	25	94
Sales	(3)	(42)
Settlements	(39)	(62)
Consolidations	0
Fair value at end of period	842	941
Change in unrealized gains/(losses) included in OCI related to financial instruments	$ (7)	$ 5

Fair Value, Measured with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Consolidation

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