Employee benefit plans - Investments Policies and Strategies (Details) - Pension plans |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Weighted average actual and target asset allocations of the pension plans by asset category | ||
| Actual allocation | 100.00% | 100.00% |
| Target allocation | 100.00% | 100.00% |
| Debt securities (including debt mutual funds) | ||
| Weighted average actual and target asset allocations of the pension plans by asset category | ||
| Actual allocation | 72.00% | 70.00% |
| Target allocation | 73.00% | 74.00% |
| Equity securities (including equity mutual funds) | ||
| Weighted average actual and target asset allocations of the pension plans by asset category | ||
| Actual allocation | 19.00% | 20.00% |
| Target allocation | 9.00% | 9.00% |
| Other | ||
| Weighted average actual and target asset allocations of the pension plans by asset category | ||
| Actual allocation | 9.00% | 10.00% |
| Target allocation | 18.00% | 17.00% |