Variable Interest Entities (Narrative) (Detail) - Variable Interest Entity Primary Beneficiary [Member] - Structured Finance and International Insurance [Member] $ in Millions |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2023
USD ($)
|
Mar. 31, 2022 |
|
| Variable Interest Entity [Line Items] | ||
| Number of variable interest entities deconsolidated | 1 | 0 |
| Recorded Due To Credit Losses in AOCI [Member] | ||
| Variable Interest Entity [Line Items] | ||
| Net realized gains (losses) related to deconsolidation | $ (15) | |