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Policyholder Account Balances - Summary of Range Guaranteed Minimum Crediting Rate (Parenthetical) (Detail) $ in Millions | Jun. 30, 2024 USD ($) bps | Dec. 31, 2023 USD ($) bps
--- | --- | ---
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | $ 15,047 |  | $ 15,540 |
1–50 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | 854 |  | 893 |
51–150 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | $ 1,203 |  | $ 1,204 |
Greater than than 150 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate | bps | 150 |  | 150 |
Policyholder account balances | $ 48 |  | $ 31 |
Minimum | 1–50 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate | bps | 1 |  | 1 |
Minimum | 51–150 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate | bps | 51 |  | 51 |
Maximum | 1–50 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate | bps | 50 |  | 50 |
Maximum | 51–150 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate | bps | 150 |  | 150 |
Less than 2.00% |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | $ 225 | [1] | $ 257 | [2]
Less than 2.00% | 1–50 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | 69 |  | 97 |
Less than 2.00% | 51–150 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | 53 |  | 39 |
Less than 2.00% | Greater than than 150 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | $ 0 |  | $ 0 |
Less than 2.00% | Minimum |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 2.00% |  | 2.00% |
2.00%–2.99% |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | $ 909 | [1] | $ 1,282 | [2]
2.00%–2.99% | 1–50 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | 102 |  | 81 |
2.00%–2.99% | 51–150 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | 0 |  | 0 |
2.00%–2.99% | Greater than than 150 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | $ 0 |  | $ 0 |
2.00%–2.99% | Minimum |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 2.00% |  | 2.00% |
2.00%–2.99% | Maximum |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 2.99% |  | 2.99% |
3.00%–3.99% |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | $ 3,735 | [1] | $ 3,617 | [2]
3.00%–3.99% | 1–50 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | 666 |  | 699 |
3.00%–3.99% | 51–150 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | 1,134 |  | 1,155 |
3.00%–3.99% | Greater than than 150 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | $ 48 |  | $ 31 |
3.00%–3.99% | Minimum |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 3.00% |  | 3.00% |
3.00%–3.99% | Maximum |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 3.99% |  | 3.99% |
4.00% and greater |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | $ 2,423 | [1] | $ 2,505 | [2]
4.00% and greater | 1–50 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | 17 |  | 16 |
4.00% and greater | 51–150 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | 16 |  | 10 |
4.00% and greater | Greater than than 150 basis points above |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | $ 0 |  | $ 0 |
4.00% and greater | Minimum |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 4.00% |  | 4.00% |
Universal Life Insurance and Investment Contracts |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder account balances | $ 4,654 |  | $ 4,807 |
[1] | Excludes universal life insurance and investment contracts of approximately $4,654 million that have a market component to their crediting strategy.
[2] | Excludes universal life insurance and investment contracts of approximately $4,807 million that have a market component to their crediting strategy.

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