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Retirement Plans - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected cash contributions to pension plans in 2014 | $ 2,578 |  |
Defined Contribution Pension |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Employer expenses | 16,460 | $ 15,835 | $ 12,078
United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Employer expenses | 652 | 54 |
International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Employer expenses | $ 1,869 | $ 2,098 |
International Plans | Equity Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation percentage | 65.00% |  |
Minimum | United States Plans | Equity Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Equity investments target range, minimum | 40.00% |  |
Maximum | United States Plans | Equity Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Equity investments target range, minimum | 75.00% |  |

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