Long Term Debt - Senior Secured Notes (Details) $ in Thousands			12 Months Ended
	Feb. 02, 2024 USD ($)	Feb. 04, 2021 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)
Long-Term Debt
Face amount			$ 2,900,000	$ 2,887,922
(Loss) gain on early extinguishment of liabilities, net			(55,281)	6,177	$ 1,813
7.5% Senior Secured Notes due 2026
Long-Term Debt
Face amount		$ 2,050,000	0	2,050,000
Debt instrument, total leverage ratio		4.75
7.5% Senior Secured Notes due 2026 | Redemptions
Long-Term Debt
Notes redeemed			2,050,000
Cash paid (excluding payments of accrued interest)			2,088,438
(Loss) gain on early extinguishment of liabilities, net			59,014
Write off of debt issuance costs and other expenses			20,600
Redemption premium			38,400
8.125% Senior Secured Notes due 2029
Long-Term Debt
Face amount	$ 900,000		900,000	0
8.375% Senior Secured Notes due 2032
Long-Term Debt
Face amount	$ 1,300,000		$ 1,300,000	$ 0
Senior Secured Notes
Long-Term Debt
Debt instrument, description	The 2029 Senior Secured Notes and 2032 Senior Secured Notes were issued pursuant to an indenture dated February 2, 2024 (“Indenture”). The 2029 Senior Secured Notes and 2032 Senior Secured Notes are secured by first priority liens on substantially all of our assets other than our accounts receivable, inventory, pledged deposit accounts, cash and cash equivalents, renewable energy tax credits and related assets and second priority liens on our accounts receivable, inventory, pledged deposit accounts, cash and cash equivalents, renewable energy tax credits and related assets.The Indenture contains covenants that, among other things, limit our ability to: pay distributions or make other restricted payments or repurchase stock; incur or guarantee additional indebtedness or issue disqualified stock or certain preferred stock; make certain investments; create or incur liens; sell assets; enter into restrictions affecting the ability of restricted subsidiaries to make distributions, make loans or advances or transfer assets to the guarantors (including the Partnership); enter into certain transactions with our affiliates; designate restricted subsidiaries as unrestricted subsidiaries; and consolidate, merge or transfer or sell all or substantially all of our assets. These covenants are subject to a number of important exceptions and qualifications.We have the option to redeem all or part of the 2029 Senior Secured Notes, at any time on or after February 15, 2026 at the redemption prices specified in the Indenture. Prior to such time, we have the option to redeem up to 40% of the principal amount of the 2029 Senior Secured Notes with an amount of cash not greater than the amount equal to the net cash proceeds from certain equity offerings at the redemption price specified in the Indenture. In addition, before February 15, 2026, we have the option to redeem all or part of the 2029 Senior Secured Notes at a redemption price equal to 100% of the aggregate principal amount of the 2029 Senior Secured Notes redeemed, plus an applicable “make-whole” premium as specified in the Indenture and accrued and unpaid interest, if any, to, but excluding, the redemption date.We have the option to redeem all or part of the 2032 Senior Secured Notes, at any time on or after February 15, 2027 at the redemption prices specified in the Indenture. Prior to such time, we have the option to redeem up to 40% of the principal amount of the 2032 Senior Secured Notes with an amount of cash not greater than the amount equal to the net cash proceeds from certain equity offerings at the redemption price specified in the Indenture. In addition, before February 15, 2027, we have the option to redeem all or part of the 2032 Senior Secured Notes at a redemption price equal to 100% of the aggregate principal amount of the 2032 Senior Secured Notes redeemed, plus an applicable “make-whole” premium as specified in the Indenture and accrued and unpaid interest, if any, to, but excluding, the redemption date.If we sell certain of our assets, or experience specific kinds of changes of control followed by a rating decline, each holder of the 2029 Senior Secured Notes and 2032 Senior Secured Note will have the right to require us to offer to repurchase all or any part of that holder’s 2029 Senior Secured Notes and 2032 Senior Secured Notes at 101% of the aggregate principal amount of the 2029 Senior Secured Notes and 2032 Senior Secured Notes to be repurchased plus accrued and unpaid interest on the 2029 Senior Secured Notes and 2032 Senior Secured Notes repurchased to, but excluding, the date of purchase.