Employee Benefit Plans (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Mar. 31, 2024 |
|
| Defined Benefit Plan Disclosure [Line Items] | |||||
| Employer matching contribution, percent of match (as a percent) | 6.00% | ||||
| Employees’ capital accumulation plan, total expense recognized | $ 62.1 | $ 55.5 | $ 185.0 | $ 163.7 | |
| Officer Medical Plan | Other Postretirement Benefits Plan | |||||
| Defined Benefit Plan Disclosure [Line Items] | |||||
| Defined benefit plan, unfunded status of plan | $ 131.0 | $ 131.0 | $ 127.0 | ||