Investments (Modifications to Borrowers Experiencing Financial Difficulty) (Details) - Commercial Mortgage Loans - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
| Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 250 | $ 339 | $ 250 | $ 589 |
| Maximum | ||||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
| Financing Receivable, Modified, Weighted Average Term Increase | 5 years | 2 years | 5 years | |
| Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage | 1.00% | 1.00% | 1.10% | |
| Extended Maturity | ||||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
| Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 339 | $ 250 | $ 589 | |
| Payment Deferral | ||||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
| Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 0 | $ 0 | $ 0 | |