Investments (Amortized Cost Basis of Loan Modifications made to Borrowers Experiencing Financial Difficulties) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Term Extension | Commercial mortgage loans | ||||
| Financing Receivable, Modified, Subsequent Default [Line Items] | ||||
| Amortized cost basis | $ 0 | $ 178 | $ 0 | $ 337 |
| Term Extension | 0.00% | 0.30% | 0.00% | 0.60% |
| Term Extension | Agricultural property loans | ||||
| Financing Receivable, Modified, Subsequent Default [Line Items] | ||||
| Amortized cost basis | $ 0 | $ 0 | $ 0 | $ 0 |
| Term Extension | 0.00% | 0.00% | 0.00% | 0.00% |
| Other Than Insignificant Delay in Payment | Commercial mortgage loans | ||||
| Financing Receivable, Modified, Subsequent Default [Line Items] | ||||
| Amortized cost basis | $ 0 | $ 0 | $ 0 | $ 0 |
| Other Than Insignificant Delay in Payment | Agricultural property loans | ||||
| Financing Receivable, Modified, Subsequent Default [Line Items] | ||||
| Amortized cost basis | $ 0 | $ 0 | $ 0 | $ 0 |