Fair Value - Gross Components of Purchases, Sales, Issuances and Settlements, net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Jan. 01, 2022
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	$ 5,503	$ 7,240
Issuances	0	0
Sales	(59)	(2,318)
Settlements	(1,284)	(1,549)
Purchases, (Sales), Issuances, (Settlements)	4,160	3,373
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	442	12,394
Transfers (out)	(563)	(6,330)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	121	(6,064)
Purchases	0	0
Issuances	(577)	(260)
Sales	0	0
Settlements	(144)	(149)
Purchases, (Sales), Issuances, (Settlements), Liabilities	(433)	(111)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3	0	(3,645)
Transfers (out)	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net	0	(3,645)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	50,833	51,565	$ 45,582	$ 45,752
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value	9,585	13,311	8,525	10,908
Short-term investments | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases		53
Issuances		0
Sales		0
Settlements		0
Purchases, (Sales), Issuances, (Settlements)		53
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3		0
Transfers (out)		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		0
Trading securities | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases		6
Issuances		0
Sales		0
Settlements		0
Purchases, (Sales), Issuances, (Settlements)	(4)	6
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3		30
Transfers (out)		(10)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	9	(20)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	42	90	53	69
Trading securities | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	2	29
Issuances	0	0
Sales	0	(265)
Settlements	(1)	(18)
Purchases, (Sales), Issuances, (Settlements)	1	(254)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0
Transfers (out)	0	(1,260)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	1,260
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	885	252	878	1,771
Trading securities | Variable Interest Entities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	10
Issuances	0
Sales	(12)
Settlements	0
Purchases, (Sales), Issuances, (Settlements)	(2)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	19
Transfers (out)	(3)	(1,260)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	(16)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	648		622
Trading securities | Investments, excluding investments in Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	0
Issuances	0
Sales	0
Settlements	(4)
Purchases, (Sales), Issuances, (Settlements)	(4)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	5
Transfers (out)	(14)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	9
Equity securities | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements)	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	13	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	71	438	92	429
Equity securities | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	0	0
Issuances	0	0
Sales	0	0
Settlements	(32)	0
Purchases, (Sales), Issuances, (Settlements)	(32)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0	0
Transfers (out)	0	(113)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	113
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	251	166	279	284
Equity securities | Variable Interest Entities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Transfers (out)		(113)
Equity securities | Investments, excluding investments in Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	0
Issuances	0
Sales	0
Settlements	0
Purchases, (Sales), Issuances, (Settlements)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0
Transfers (out)	(13)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	13
Investment funds | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements)		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value		19		18
Investment funds | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases		0
Issuances		0
Sales		(34)
Settlements		0
Purchases, (Sales), Issuances, (Settlements)	32	(34)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	2,031
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	1,034	814	959	2,855
Investment funds | Variable Interest Entities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	0	253
Issuances	0	0
Sales	(8)	(15)
Settlements	0	0
Purchases, (Sales), Issuances, (Settlements)	(8)	238
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	148	10,081
Transfers (out)	(48)	(1,034)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	(100)	(9,047)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	2,581	10,577	2,471	1,297
Investment funds | Related Party | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3		0
Transfers (out)		(2,031)
Foreign governments | AFS securities | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements)	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	1	2	1	2
Corporate | Available-for-sale Securities | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	208
Issuances	0
Sales	0
Settlements	(82)
Purchases, (Sales), Issuances, (Settlements)	126
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	29
Transfers (out)	(209)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	180
Corporate | Available-for-sale Securities | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	156
Issuances	0
Sales	0
Settlements	(3)
Purchases, (Sales), Issuances, (Settlements)	153
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0
Transfers (out)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0
Corporate | AFS securities | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases		324
Issuances		0
Sales		(168)
Settlements		(16)
Purchases, (Sales), Issuances, (Settlements)	126	140
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3		43
Transfers (out)		(1)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	180	(42)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	1,622	1,499	1,665	1,339
Corporate | AFS securities | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases		315
Issuances		0
Sales		(217)
Settlements		(4)
Purchases, (Sales), Issuances, (Settlements)	153	94
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3		0
Transfers (out)		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	959	761	812	670
CLO | Available-for-sale Securities | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	185
Issuances	0
Sales	0
Settlements	0
Purchases, (Sales), Issuances, (Settlements)	185
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0
Transfers (out)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0
CLO | AFS securities | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases		0
Issuances		0
Sales		0
Settlements		(10)
Purchases, (Sales), Issuances, (Settlements)		(10)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3		0
Transfers (out)		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value		5		14
CLO | AFS securities | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements)	185
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	498		303
CLO | AFS securities | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases		130
Issuances		0
Sales		0
Settlements		0
Purchases, (Sales), Issuances, (Settlements)		130
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3		0
Transfers (out)		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value		332		202
RMBS | Available-for-sale Securities | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	1
Issuances	0
Sales	0
Settlements	(1)
Purchases, (Sales), Issuances, (Settlements)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0
Transfers (out)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0
RMBS | AFS securities | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	238		232
ABS | Available-for-sale Securities | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	298
Issuances	0
Sales	0
Settlements	(143)
Purchases, (Sales), Issuances, (Settlements)	155
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	215
Transfers (out)	(276)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	61
ABS | Available-for-sale Securities | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	1,634
Issuances	0
Sales	0
Settlements	(219)
Purchases, (Sales), Issuances, (Settlements)	1,415
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0
Transfers (out)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0
ABS | AFS securities | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases		1,489
Issuances		0
Sales		(1,450)
Settlements		(187)
Purchases, (Sales), Issuances, (Settlements)	155	(148)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3		338
Transfers (out)		(1)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	61	(337)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	4,942	3,783	4,867	3,619
ABS | AFS securities | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases		374
Issuances		0
Sales		(87)
Settlements		(432)
Purchases, (Sales), Issuances, (Settlements)	1,415	(145)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3		0
Transfers (out)		(1,864)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	1,864
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	7,005	4,409	5,542	6,445
CMBS | AFS securities | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements)		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		16
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value		10		43
CMBS | AFS securities | Investments, excluding investments in Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases		0
Issuances		0
Sales		0
Settlements		0
Purchases, (Sales), Issuances, (Settlements)		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3		0
Transfers (out)		(16)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		16
Mortgage loans | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases		4,091
Issuances		0
Sales		(82)
Settlements		(723)
Purchases, (Sales), Issuances, (Settlements)	2,244	3,286
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3		0
Transfers (out)		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	29,949	23,696	27,454	21,154
Mortgage loans | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	0	146
Issuances	0	0
Sales	0	0
Settlements	(4)	(7)
Purchases, (Sales), Issuances, (Settlements)	(4)	139
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0	0
Transfers (out)	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	1,324	1,456	1,302	1,369
Mortgage loans | Variable Interest Entities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	46	0
Issuances	0	0
Sales	0	0
Settlements	(1)	(152)
Purchases, (Sales), Issuances, (Settlements)	45	(152)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0	0
Transfers (out)	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	2,119	1,880	2,055	2,152
Mortgage loans | Investments, excluding investments in Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	2,882
Issuances	0
Sales	(32)
Settlements	(606)
Purchases, (Sales), Issuances, (Settlements)	2,244
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0
Transfers (out)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0
Short-term investments | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements)	(30)	30
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	(26)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	30	59	36	29
Short-term investments | Investments, excluding investments in Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	0	30
Issuances	0	0
Sales	0	0
Settlements	(30)	0
Purchases, (Sales), Issuances, (Settlements)	(30)	30
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	26	0
Transfers (out)	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	(26)	0
Short-term investments | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements)		53
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value		53		0
Investment funds | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	32
Issuances	0
Sales	0
Settlements	0
Purchases, (Sales), Issuances, (Settlements)	32
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0
Transfers (out)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0
Reinsurance recoverable
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements)	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	1,470	1,814	1,388	1,991
Other | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements)	(156)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	286		441
Other | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	42
Issuances	0
Sales	0
Settlements	0
Purchases, (Sales), Issuances, (Settlements)	42
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0
Transfers (out)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	338		303
Other | Variable Interest Entities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	5	0
Issuances	0	0
Sales	(7)	0
Settlements	0	0
Purchases, (Sales), Issuances, (Settlements)	(2)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0	1,902
Transfers (out)	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	(1,902)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	97	1,902	99	0
Other | Investments, excluding investments in Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	2
Issuances	0
Sales	0
Settlements	(158)
Purchases, (Sales), Issuances, (Settlements)	(156)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0
Transfers (out)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0
Embedded derivatives | Funds withheld at interest | Consolidated Entity, excluding Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements)	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	(4,291)	(1,882)	(4,847)	0
Embedded derivatives | Funds withheld at interest | Related Party
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements)	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	(1,266)	(570)	(1,425)	0
Interest sensitive contract liabilities | Universal life
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements), Liabilities	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value	879	1,096	829	1,235
Interest sensitive contract liabilities | Embedded derivatives
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases	0	0
Issuances	(577)	(260)
Sales	0	0
Settlements	(144)	(149)
Purchases, (Sales), Issuances, (Settlements), Liabilities	(433)	(111)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3	0	0
Transfers (out)	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value	6,747	6,485	5,841	7,408
Derivative Financial Instruments, Liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements), Liabilities	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value	1	3	1	3
Future policy benefits | AmerUs Closed Block
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements), Liabilities	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value	1,190	1,378	1,164	1,520
Future policy benefits | ILICO Closed Block and life benefits
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements), Liabilities	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value	579	704	548	742
Other liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases, (Sales), Issuances, (Settlements), Liabilities	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value	$ 189		$ 142
Liabilities of consolidated VIEs – debt
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Purchases		0
Issuances		0
Sales		0
Settlements		0
Purchases, (Sales), Issuances, (Settlements), Liabilities		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3		(3,645)
Transfers (out)		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net		(3,645)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		$ 3,645		$ 0