Investments (Continuous Gross Unrealized Losses for Fixed Maturity Securities Available-For-Sale) (Details) $ in Millions	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	$ 174,502	$ 62,019
Less than 12 months Gross Unrealized Loss	$ 19,577	$ 1,264
Total number of securities in an unrealized loss position less than 12 months	14,391	4,774
Equal to or Greater than 12 Months Estimated Fair Value	$ 18,119	$ 13,224
Equal to or Greater than 12 Months Gross Unrealized Loss	$ 4,172	$ 1,154
Total number of securities in an unrealized loss position equal or greater than 12 months	1,752	979
U.S. corporate
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	$ 53,448	$ 8,076
Less than 12 months Gross Unrealized Loss	6,137	165
Equal to or Greater than 12 Months Estimated Fair Value	2,459	1,499
Equal to or Greater than 12 Months Gross Unrealized Loss	568	116
Foreign corporate
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	36,341	10,011
Less than 12 months Gross Unrealized Loss	5,653	404
Equal to or Greater than 12 Months Estimated Fair Value	3,764	2,834
Equal to or Greater than 12 Months Gross Unrealized Loss	798	327
Foreign government
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	17,614	7,812
Less than 12 months Gross Unrealized Loss	2,014	319
Equal to or Greater than 12 Months Estimated Fair Value	5,895	5,377
Equal to or Greater than 12 Months Gross Unrealized Loss	1,634	502
U.S. government and agency
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	17,853	14,419
Less than 12 months Gross Unrealized Loss	1,555	138
Equal to or Greater than 12 Months Estimated Fair Value	2,152	1,571
Equal to or Greater than 12 Months Gross Unrealized Loss	652	138
RMBS
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	19,935	10,363
Less than 12 months Gross Unrealized Loss	1,807	158
Equal to or Greater than 12 Months Estimated Fair Value	1,847	417
Equal to or Greater than 12 Months Gross Unrealized Loss	326	30
ABS & CLO
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	14,275	8,150
Less than 12 months Gross Unrealized Loss	794	39
Equal to or Greater than 12 Months Estimated Fair Value	1,201	804
Equal to or Greater than 12 Months Gross Unrealized Loss	103	20
Municipals
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	6,328	524
Less than 12 months Gross Unrealized Loss	1,015	10
Equal to or Greater than 12 Months Estimated Fair Value	74	65
Equal to or Greater than 12 Months Gross Unrealized Loss	25	3
CMBS
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	8,708	2,664
Less than 12 months Gross Unrealized Loss	602	31
Equal to or Greater than 12 Months Estimated Fair Value	727	657
Equal to or Greater than 12 Months Gross Unrealized Loss	66	18
Investment Grade
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	165,299	58,358
Less than 12 months Gross Unrealized Loss	18,444	1,123
Equal to or Greater than 12 Months Estimated Fair Value	16,780	12,022
Equal to or Greater than 12 Months Gross Unrealized Loss	$ 3,884	1,025
Total number of securities in an unrealized loss position equal or greater than 12 months	1,535
Below Investment Grade
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Estimated Fair Value	$ 9,203	3,661
Less than 12 months Gross Unrealized Loss	1,133	141
Equal to or Greater than 12 Months Estimated Fair Value	1,339	1,202
Equal to or Greater than 12 Months Gross Unrealized Loss	$ 288	$ 129
Total number of securities in an unrealized loss position equal or greater than 12 months	217

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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