Policyholders' Account Balances - Policyholder Account Balance, Guaranteed Minimum Crediting Rate (Details) $ in Millions | Sep. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 82,413 | $ 17,177 | |
Annuity | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 78,737 | 14,694 | $ 12,012 |
Annuity | At Guaranteed Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 7,876 | 4,244 | |
Annuity | 1 - 50 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 3,666 | $ 875 | |
Annuity | 1 - 50 Basis Points Above | Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Basis points | 0.0001 | 0.0001 | |
Annuity | 1 - 50 Basis Points Above | Maximum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Basis points | 0.0050 | 0.0050 | |
Annuity | 51 - 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 5,230 | $ 2,483 | |
Annuity | 51 - 150 Basis Points Above | Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Basis points | 0.0051 | 0.0051 | |
Annuity | 51 - 150 Basis Points Above | Maximum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Basis points | 0.0150 | 0.0150 | |
Annuity | > 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Basis points | 0.0150 | 0.0150 | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 14,891 | $ 7,084 | |
Annuity | Other | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 47,074 | 8 | |
Annuity | 0% - 1% | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 15,497 | $ 3,719 | |
Annuity | 0% - 1% | Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 0% | 0% | |
Annuity | 0% - 1% | Maximum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 1% | 1% | |
Annuity | 0% - 1% | At Guaranteed Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 4,176 | $ 2,485 | |
Annuity | 0% - 1% | 1 - 50 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 2,882 | 29 | |
Annuity | 0% - 1% | 51 - 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 3,676 | 483 | |
Annuity | 0% - 1% | > 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 4,763 | 722 | |
Annuity | 0% - 1% | Other | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Annuity | 1% - 2% | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 5,046 | $ 5,178 | |
Annuity | 1% - 2% | Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 1% | 1% | |
Annuity | 1% - 2% | Maximum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 2% | 2% | |
Annuity | 1% - 2% | At Guaranteed Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 1,504 | $ 668 | |
Annuity | 1% - 2% | 1 - 50 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 366 | 430 | |
Annuity | 1% - 2% | 51 - 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 1,411 | 1,943 | |
Annuity | 1% - 2% | > 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 1,765 | 2,137 | |
Annuity | 1% - 2% | Other | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Annuity | 2% - 3% | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 10,815 | $ 5,516 | |
Annuity | 2% - 3% | Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 2% | 2% | |
Annuity | 2% - 3% | Maximum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 3% | 3% | |
Annuity | 2% - 3% | At Guaranteed Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 1,907 | $ 827 | |
Annuity | 2% - 3% | 1 - 50 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 412 | 409 | |
Annuity | 2% - 3% | 51 - 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 142 | 56 | |
Annuity | 2% - 3% | > 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 8,354 | 4,224 | |
Annuity | 2% - 3% | Other | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 0 | $ 0 | |
Annuity | Greater than 3% | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 3% | 3% | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 305 | $ 273 | |
Annuity | Greater than 3% | At Guaranteed Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 289 | 264 | |
Annuity | Greater than 3% | 1 - 50 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 6 | 7 | |
Annuity | Greater than 3% | 51 - 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 1 | 1 | |
Annuity | Greater than 3% | > 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 9 | 1 | |
Annuity | Greater than 3% | Other | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Annuity | Products with either a fixed rate or no guaranteed minimum crediting rate | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 47,074 | 8 | |
Annuity | Products with either a fixed rate or no guaranteed minimum crediting rate | At Guaranteed Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Annuity | Products with either a fixed rate or no guaranteed minimum crediting rate | 1 - 50 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Annuity | Products with either a fixed rate or no guaranteed minimum crediting rate | 51 - 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Annuity | Products with either a fixed rate or no guaranteed minimum crediting rate | > 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Annuity | Products with either a fixed rate or no guaranteed minimum crediting rate | Other | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 47,074 | 8 | |
Life | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 2,068 | 1,975 | $ 1,899 |
Life | At Guaranteed Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 1,088 | 1,242 | |
Life | 1 - 50 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 2 | 2 | |
Life | 51 - 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 279 | 359 | |
Life | > 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 699 | 371 | |
Life | Other | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 1 | |
Life | 0% - 1% | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 0 | $ 0 | |
Life | 0% - 1% | Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 0% | 0% | |
Life | 0% - 1% | Maximum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 1% | 1% | |
Life | 0% - 1% | At Guaranteed Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 0 | $ 0 | |
Life | 0% - 1% | 1 - 50 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | 0% - 1% | 51 - 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | 0% - 1% | > 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | 0% - 1% | Other | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | 1% - 2% | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 788 | $ 681 | |
Life | 1% - 2% | Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 1% | 1% | |
Life | 1% - 2% | Maximum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 2% | 2% | |
Life | 1% - 2% | At Guaranteed Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 30 | $ 168 | |
Life | 1% - 2% | 1 - 50 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 2 | 2 | |
Life | 1% - 2% | 51 - 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 57 | 140 | |
Life | 1% - 2% | > 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 699 | 371 | |
Life | 1% - 2% | Other | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | 2% - 3% | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 644 | $ 634 | |
Life | 2% - 3% | Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 2% | 2% | |
Life | 2% - 3% | Maximum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 3% | 3% | |
Life | 2% - 3% | At Guaranteed Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 422 | $ 415 | |
Life | 2% - 3% | 1 - 50 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | 2% - 3% | 51 - 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 222 | 219 | |
Life | 2% - 3% | > 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | 2% - 3% | Other | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 0 | $ 0 | |
Life | Greater than 3% | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Range of Guaranteed Minimum Crediting Rate | 3% | 3% | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 636 | $ 659 | |
Life | Greater than 3% | At Guaranteed Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 636 | 659 | |
Life | Greater than 3% | 1 - 50 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | Greater than 3% | 51 - 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | Greater than 3% | > 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | Greater than 3% | Other | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | Products with either a fixed rate or no guaranteed minimum crediting rate | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 1 | |
Life | Products with either a fixed rate or no guaranteed minimum crediting rate | At Guaranteed Minimum | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | Products with either a fixed rate or no guaranteed minimum crediting rate | 1 - 50 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | Products with either a fixed rate or no guaranteed minimum crediting rate | 51 - 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | Products with either a fixed rate or no guaranteed minimum crediting rate | > 150 Basis Points Above | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | 0 | 0 | |
Life | Products with either a fixed rate or no guaranteed minimum crediting rate | Other | | | |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] | | | |
Policyholders' account balances – investment contracts, excluding embedded derivative | $ 0 | $ 1 | |