Investments (Amortized Cost and Fair Value of Fixed Maturities by Contractual Maturities) (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Available-for-sale, Amortized Cost
Due in one year or less		$ 8,859
Due after one year through five years		50,717
Due after five years through ten years		65,682
Due after ten years		183,107
Fixed Maturities, Available-for-sale, Amortized Cost		335,447	$ 333,459
Available-for-sale, Fair Value
Due in one year or less		9,025
Due after one year through five years		49,713
Due after five years through ten years		62,449
Due after ten years		160,609
Fixed Maturities, Available for Sale, Fair Value	[1]	307,719	372,410
Held-to-Maturity, Amortized Cost
Due in one year or less		0
Due after one year through five years		428
Due after five years through ten years		17
Due after ten years		708
Amortized Cost		1,296
Held-to-maturity, Fair Value
Due in one year or less		0
Due after one year through five years		454
Due after five years through ten years		18
Due after ten years		835
Fixed Maturities, Held-to-maturity, Fair Value		1,455	1,803
Amortized Cost	[1]	1,296	1,514
Asset-backed securities
Available-for-sale, Amortized Cost
Debt Maturities, without single maturity date		12,972
Available-for-sale, Fair Value
Debt Maturities, without single maturity date		12,851
Held-to-Maturity, Amortized Cost
Debt Maturities, without single maturity date		0
Held-to-maturity, Fair Value
Debt Maturities, without single maturity date		0
Commercial mortgage-backed securities
Available-for-sale, Amortized Cost
Debt Maturities, without single maturity date		11,497
Available-for-sale, Fair Value
Debt Maturities, without single maturity date		10,655
Held-to-Maturity, Amortized Cost
Debt Maturities, without single maturity date		0
Held-to-maturity, Fair Value
Debt Maturities, without single maturity date		0
Residential mortgage-backed securities
Available-for-sale, Amortized Cost
Debt Maturities, without single maturity date		2,613
Available-for-sale, Fair Value
Debt Maturities, without single maturity date		2,417
Held-to-Maturity, Amortized Cost
Debt Maturities, without single maturity date		143
Held-to-maturity, Fair Value
Debt Maturities, without single maturity date		148
Fixed maturities
Available-for-sale, Amortized Cost
Fixed Maturities, Available-for-sale, Amortized Cost		335,447	333,459
Available-for-sale, Fair Value
Fixed Maturities, Available for Sale, Fair Value		307,719	372,410
Held-to-maturity, Fair Value
Fixed Maturities, Held-to-maturity, Fair Value		1,455	1,803
Amortized Cost		1,298	1,519
Fixed maturities | Held-for-sale
Available-for-sale, Amortized Cost
Fixed Maturities, Available-for-sale, Amortized Cost			13,145
Available-for-sale, Fair Value
Fixed Maturities, Available for Sale, Fair Value			13,569
Fixed maturities | U.S. private corporate securities
Available-for-sale, Amortized Cost
Fixed Maturities, Available-for-sale, Amortized Cost		39,867	35,019
Available-for-sale, Fair Value
Fixed Maturities, Available for Sale, Fair Value		36,879	37,382
Fixed maturities | Asset-backed securities
Available-for-sale, Amortized Cost
Fixed Maturities, Available-for-sale, Amortized Cost		12,972	11,402
Available-for-sale, Fair Value
Fixed Maturities, Available for Sale, Fair Value		12,851	11,525
Fixed maturities | Commercial mortgage-backed securities
Available-for-sale, Amortized Cost
Fixed Maturities, Available-for-sale, Amortized Cost		11,497	12,490
Available-for-sale, Fair Value
Fixed Maturities, Available for Sale, Fair Value		10,655	13,099
Fixed maturities | Residential mortgage-backed securities
Available-for-sale, Amortized Cost
Fixed Maturities, Available-for-sale, Amortized Cost		2,613	2,749
Available-for-sale, Fair Value
Fixed Maturities, Available for Sale, Fair Value		2,417	2,858
Held-to-maturity, Fair Value
Fixed Maturities, Held-to-maturity, Fair Value		148	205
Amortized Cost		143	191
Fixed maturities | Prudential Netting Agreement
Held-to-maturity, Fair Value
Fixed Maturities, Held-to-maturity, Fair Value		4,250	5,394
Amortized Cost		4,250	4,750
Fixed maturities | Prudential Netting Agreement | U.S. private corporate securities
Available-for-sale, Amortized Cost
Fixed Maturities, Available-for-sale, Amortized Cost		8,040	5,941
Available-for-sale, Fair Value
Fixed Maturities, Available for Sale, Fair Value		$ 8,040	$ 5,995

[1] See Note 4 for details of balances associated with variable interest entities.