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Business Segments - Summarized Financial Information for Joint Venture Unconsolidated (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Related Party Transaction [Line Items]      
Revenue $ 2,148,069 $ 1,861,522 $ 1,622,642
Gross Margin 639,266 519,614 408,355
Earnings Before Income Taxes 588,593 475,094 $ 424,112
Current Assets 521,503 442,727  
Current Liabilities 212,889 207,551  
Corporate Joint Venture [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]      
Related Party Transaction [Line Items]      
Revenue 227,565 209,937  
Gross Margin 77,673 69,913  
Earnings Before Income Taxes 71,491 65,541  
Current Assets 88,562 73,462  
Noncurrent Assets 124,503 112,439  
Current Liabilities $ 29,434 $ 17,161