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Investments - Schedule of AFS Securities (Details) - USD ($) $ in Millions	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Jan. 01, 2022
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	$ 146,211		$ 131,422
AFS securities allowance for credit losses	(522)	$ (503)	(459)	$ (629)	$ (488)	$ (311)
Gross Unrealized Gains	567		309
Gross Unrealized Losses	(17,697)		(19,047)
Available-for-sale securities	128,559		112,225
Consolidated Entity, excluding Affiliated Entity
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	132,242		120,982
AFS securities allowance for credit losses	(521)	(502)	(458)	(609)	(468)	(311)
Gross Unrealized Gains	529		295
Gross Unrealized Losses	(17,098)		(18,415)
Available-for-sale securities	$ 115,152		$ 102,404
Carrying Amount, Assets, Percent of Total	100.00%		100.00%
Related Party
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	$ 13,969		$ 10,440
AFS securities allowance for credit losses	(1)	(1)	(1)	(20)	(20)	0
Gross Unrealized Gains	38		14
Gross Unrealized Losses	(599)		(632)
Available-for-sale securities	$ 13,407		$ 9,821
Carrying Amount, Assets, Percent of Total	100.00%		100.00%
U.S. government and agencies | Consolidated Entity, excluding Affiliated Entity
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	$ 5,564		$ 3,333
AFS securities allowance for credit losses	0		0
Gross Unrealized Gains	3		0
Gross Unrealized Losses	(746)		(756)
Available-for-sale securities	4,821		2,577
US state, municipal and political subdivisions | Consolidated Entity, excluding Affiliated Entity
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	1,301		1,218
AFS securities allowance for credit losses	0		0
Gross Unrealized Gains	0		0
Gross Unrealized Losses	(247)		(291)
Available-for-sale securities	1,054		927
Foreign governments | Consolidated Entity, excluding Affiliated Entity
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	1,285		1,207
AFS securities allowance for credit losses	(27)	(27)	(27)	(61)	(66)	0
Gross Unrealized Gains	9		3
Gross Unrealized Losses	(259)		(276)
Available-for-sale securities	1,008		907
Corporate | Consolidated Entity, excluding Affiliated Entity
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	80,329		74,644
AFS securities allowance for credit losses	(73)	(79)	(61)	(70)	(55)	0
Gross Unrealized Gains	130		92
Gross Unrealized Losses	(12,976)		(13,774)
Available-for-sale securities	67,410		60,901
Corporate | Related Party
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	1,401		1,028
AFS securities allowance for credit losses	0		0
Gross Unrealized Gains	0		1
Gross Unrealized Losses	(58)		(47)
Available-for-sale securities	1,343		982
CLO | Consolidated Entity, excluding Affiliated Entity
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	19,320		17,722
AFS securities allowance for credit losses	(3)	(4)	(7)	(107)	(18)	0
Gross Unrealized Gains	174		115
Gross Unrealized Losses	(970)		(1,337)
Available-for-sale securities	18,521		16,493
CLO | Related Party
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	3,980		3,346
AFS securities allowance for credit losses	0	(1)	(1)	(19)	(3)	0
Gross Unrealized Gains	21		10
Gross Unrealized Losses	(195)		(276)
Available-for-sale securities	3,806		3,079
ABS | Consolidated Entity, excluding Affiliated Entity
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	12,169		11,447
AFS securities allowance for credit losses	(35)	(31)	(29)	(14)	(11)	(5)
Gross Unrealized Gains	17		15
Gross Unrealized Losses	(801)		(906)
Available-for-sale securities	11,350		10,527
ABS | Related Party
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	8,588		6,066
AFS securities allowance for credit losses	(1)	0	0	(1)	(17)	0
Gross Unrealized Gains	17		3
Gross Unrealized Losses	(346)		(309)
Available-for-sale securities	8,258		5,760
CMBS | Consolidated Entity, excluding Affiliated Entity
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	5,064		4,636
AFS securities allowance for credit losses	(6)	(5)	(5)	(9)	(6)	0
Gross Unrealized Gains	11		6
Gross Unrealized Losses	(569)		(479)
Available-for-sale securities	4,500		4,158
RMBS | Consolidated Entity, excluding Affiliated Entity
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities	7,210		6,775
AFS securities allowance for credit losses	(377)	$ (356)	(329)	$ (348)	$ (312)	$ (306)
Gross Unrealized Gains	185		64
Gross Unrealized Losses	(530)		(596)
Available-for-sale securities	$ 6,488		$ 5,914

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