Insurance Liabilities (Balance of Account Values by range of guaranteed minimum crediting rates) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	$ 18,520	$ 18,426
Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	1,935	2,019
ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	5,042	5,327
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	8,782	7,259
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	236	172
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	8,866	10,697
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	622	699
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	4,536	4,800
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	872	470
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	1,077	1,148
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	506	527
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	9,642	6,499
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	1,077	1,148
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	1,640	1,751
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	645	805
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	8,125	5,224
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	1,134	1,224
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	872	470
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	1,077	1,148
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	506	527
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	437	5,164
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	441	462
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	1,485	1,581
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	204	293
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	233	4,871
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	441	462
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	1,485	1,581
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	502	950
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	49	87
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	1,663	1,729
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	301	356
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	201	594
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	49	87
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	1,663	1,729
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	7,939	5,813
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	368	322
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	254	266
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	7,632	5,805
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	236	172
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 0200 | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	307	8
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	132	150
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0200 to 0399 | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	254	266
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	$ 0	$ 0