Insurance Liabilities (Balance of Account Values by range of guaranteed minimum crediting rates) (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Variable Annuities
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	$ 18,508	$ 18,520
Life
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	1,961	1,935
ULSG
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]
Policyholder Account Balances gross of policy loans and excludes excessing interest reserves	4,830	5,042
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	9,578	8,782
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	288	236
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	8,129	8,866
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	638	622
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	4,337	4,536
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	801	872
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	1,035	1,077
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	493	506
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	8,514	9,642
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	1,035	1,077
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	1,564	1,640
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	548	645
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	7,165	8,125
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	1,071	1,134
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	801	872
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	1,035	1,077
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	493	506
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	476	437
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	466	441
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	1,408	1,485
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	117	204
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	359	233
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	466	441
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	1,408	1,485
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	413	502
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	42	49
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	1,616	1,663
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	237	301
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	176	201
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	42	49
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	1,616	1,663
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	9,105	7,939
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	418	368
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	242	254
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	8,676	7,632
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	288	236
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	429	307
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	130	132
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	242	254
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