v3.26.1
Contingencies (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Loss Contingencies [Line Items]      
Operating Lease, Weighted Average Remaining Lease Term 8 years 9 months 18 days 9 years 1 month 6 days  
Operating Lease, Payments $ 45,200 $ 46,500 $ 46,900
Fixed Operating Lease Expense 45,200 46,500 41,300
Commitments and Contingencies  
Letters of credit as security for self insurance risk and retention policies 3,100 10,900  
Purchase Commitment, Remaining Minimum Amount Committed 64,200    
Variable Operating Lease Expense 32,600 21,300 24,400
Operating Lease, Expense 77,800 67,800 65,800
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability 17,100 $ 29,800 $ 24,700
Lessee, Operating Lease, Liability, Payments, Due Year Two 31,100    
Lessee, Operating Lease, Liability, Payments, Due Year Three 22,100    
Lessee, Operating Lease, Liability, Payments, Due Year Five 14,900    
Lessee, Operating Lease, Liability, Payments, Due after Year Five 77,800    
Lessee, Operating Lease, Liability, Payments, Due 188,100    
Lessee, Operating Lease, Liability, Undiscounted Excess Amount $ 32,700    
Operating Lease, Weighted Average Discount Rate, Percent 4.60% 4.50%  
Operating Lease, Liability $ 155,400    
Lessee, Operating Lease, Liability, to be Paid, Year One 42,100    
Estimated net replacement tariffs 28,000    
Illinois EO Litigation | Settled Litigation      
Loss Contingencies [Line Items]      
Loss Contingency, Damages Paid, Value   $ 48,200  
Commercial commitments [Member]      
Loss Contingencies [Line Items]      
Commitments and Contingencies 161,300 $ 127,400  
Long term Construction Contracts [Member] [Member]      
Loss Contingencies [Line Items]      
Commitments and Contingencies $ 71,500