Long-Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Mar. 31, 2025	Feb. 02, 2024
Long-Term Debt
Face amount	$ 2,952,271	$ 3,013,652
Unamortized debt issuance costs	(39,645)	(43,144)
Long-term debt	2,912,626	2,970,508
Current maturities of long-term debt	8,880	8,805
Debt issuance costs, current, net	0	0
Face amount, current maturities before debt issuance costs	2,943,391	3,004,847
Debt issuance costs, noncurrent, net	(39,645)	(43,144)
Long-term debt, excluding current maturities	2,903,746	2,961,703
ABL Facility
Long-Term Debt
Outstanding debt	71,000	109,000
Term Loan B Credit Facility
Long-Term Debt
Face amount	689,500	693,000
Unamortized debt issuance costs	(15,719)	(16,479)
Long-term debt	673,781	676,521
Unamortized Term Loan B discount	$ 4,000
8.125% Senior Secured Notes due 2029
Long-Term Debt
Fixed interest rate	8.125%		8.125%
Face amount	$ 900,000	900,000
Unamortized debt issuance costs	(8,900)	(10,219)
Long-term debt	$ 891,100	889,781
8.375% Senior Secured Notes due 2032
Long-Term Debt
Fixed interest rate	8.375%		8.375%
Face amount	$ 1,281,000	1,300,000
Unamortized debt issuance costs	(14,999)	(16,416)
Long-term debt	1,266,001	1,283,584
Other Long-Term Debt
Long-Term Debt
Face amount	10,771	11,652
Unamortized debt issuance costs	(27)	(30)
Long-term debt	$ 10,744	$ 11,622