Lending Activities - Loan Modifications (Details) $ in Millions |
3 Months Ended | 12 Months Ended |
|---|---|---|
|
Dec. 31, 2023
USD ($)
|
Dec. 31, 2023
USD ($)
portfolioSegment
|
|
| Allowance for losses on Mortgage and other loans receivable | ||
| Financing Receivable, Number Of Portfolio Segments | portfolioSegment | 2 | |
| Commercial Mortgage Loans | Extended Maturity | ||
| Allowance for losses on Mortgage and other loans receivable | ||
| Amortized cost | $ 87 | |
| Commercial Mortgage Loans | Extended Maturity | Fortitude RE | ||
| Allowance for losses on Mortgage and other loans receivable | ||
| Amortized cost | 56 | |
| Commercial Loans, Other Loans, And Notes Receivable | Extended Maturity | ||
| Allowance for losses on Mortgage and other loans receivable | ||
| Amortized cost | $ 168 | $ 168 |