Insurance Liabilities - Summary of interest revenue (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Liability for Future Policy Benefit, Activity [Line Items] | ||
| Gross premiums | $ 5,749 | $ 6,580 |
| Interest accretion | 2,175 | 1,947 |
| Life Insurance | ||
| Liability for Future Policy Benefit, Activity [Line Items] | ||
| Gross premiums | 2,342 | 2,319 |
| Interest accretion | 479 | 484 |
| Corporate & Other | ||
| Liability for Future Policy Benefit, Activity [Line Items] | ||
| Gross premiums | 224 | 236 |
| Interest accretion | 1,185 | 1,031 |
| Universal Life | ||
| Liability for Future Policy Benefit, Activity [Line Items] | ||
| Gross premiums | 1,232 | 1,226 |
| Interest accretion | 128 | 138 |
| Universal Life | Life Insurance | ||
| Liability for Future Policy Benefit, Activity [Line Items] | ||
| Gross premiums | 1,193 | 1,187 |
| Interest accretion | 126 | 136 |
| Universal Life | Corporate & Other | ||
| Liability for Future Policy Benefit, Activity [Line Items] | ||
| Gross premiums | 39 | 39 |
| Interest accretion | $ 2 | $ 2 |