Leases (Operating Leases Weighted Average Remaining Lease Term and Discount Rate) (Details) |
6 Months Ended | 12 Months Ended |
|---|---|---|
Sep. 30, 2025 |
Mar. 31, 2025 |
|
| Operating Leases Remaining Lease Term And Weighted Average Discount Rate [Abstract] | ||
| Remaining Lease Term Operating Lease Weighted Average | 25.7 | 24.1 |
| Operating Lease Weighted Average Discount Rate Percent | 4.70% | 4.60% |