Adoption of Accounting Pronouncement - Schedule of Change in Deferred Acquisition Costs, Deferred Sales Inducements and Value of Business Acquired (Details) $ in Millions |
Dec. 31, 2021
USD ($)
|
|---|---|
| Liability for Future Policy Benefit, Activity [Line Items] | |
| Deferred policy acquisition cost and deferred sale inducement cost | $ 3,372 |
| Reported | |
| Liability for Future Policy Benefit, Activity [Line Items] | |
| Deferred policy acquisition cost and deferred sale inducement cost | 4,527 |
| Change in discount rate assumptions for future policy benefits | |
| Liability for Future Policy Benefit, Activity [Line Items] | |
| Deferred policy acquisition cost and deferred sale inducement cost | (22) |
| Fair value adjustment of market risk benefits | |
| Liability for Future Policy Benefit, Activity [Line Items] | |
| Deferred policy acquisition cost and deferred sale inducement cost | $ (1,133) |