Pension and Other Employee Benefit Plans (Target Allocation for Plan Assets Excluding those of Employee Retirement Benefit Trusts) (Detail) |
Mar. 31, 2026 |
|---|---|
| Asset category | |
| Plan assets | 100.00% |
| General Account Assets | |
| Asset category | |
| Plan assets | 10.00% |
| Other assets | |
| Asset category | |
| Plan assets | 5.00% |
| Foreign | Equity securities | |
| Asset category | |
| Plan assets | 26.00% |
| Foreign | Debt securities | |
| Asset category | |
| Plan assets | 24.00% |
| Japan | Equity securities | |
| Asset category | |
| Plan assets | 3.00% |
| Japan | Debt securities | |
| Asset category | |
| Plan assets | 32.00% |