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Fair Value of Assets and Liabilities - Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Nov. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2022
Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 2,910,904			$ 2,816,849
Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	2,564,449			2,399,525
Secured Debts and Finance Leases | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	126,611			13,020
Secured Debts and Finance Leases | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 126,001			12,284
Senior unsecured notes, 9.750% coupon rate, due 2025 | Senior Unsecured Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Coupon rate	9.75%	9.75%	9.75%		9.75%
Senior unsecured notes, 9.750% coupon rate, due 2025 | Senior Unsecured Notes | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 379,392			497,454
Senior unsecured notes, 9.750% coupon rate, due 2025 | Senior Unsecured Notes | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 379,970			490,750
Senior secured notes, zero coupon rate, due 2026 | Senior Secured Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Coupon rate	0.00%
Senior secured notes, zero coupon rate, due 2026 | Senior Secured Notes | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 826,974			731,211
Senior secured notes, zero coupon rate, due 2026 | Senior Secured Notes | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 885,108			771,981
Senior unsecured notes, 4.750% coupon rate, due 2028 | Senior Unsecured Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Coupon rate	4.75%
Senior unsecured notes, 4.750% coupon rate, due 2028 | Senior Unsecured Notes | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 496,018			494,746
Senior unsecured notes, 4.750% coupon rate, due 2028 | Senior Unsecured Notes | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 429,170			384,110
Senior unsecured notes, 4.375% coupon rate, due 2031 | Senior Unsecured Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Coupon rate	4.375%
Senior unsecured notes, 4.375% coupon rate, due 2031 | Senior Unsecured Notes | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 494,702			493,845
Senior unsecured notes, 4.375% coupon rate, due 2031 | Senior Unsecured Notes | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 368,240			375,000
Senior unsecured notes, 5.625% coupon rate, due 2042 | Senior Unsecured Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Coupon rate	5.625%
Senior unsecured notes, 5.625% coupon rate, due 2042 | Senior Unsecured Notes | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 343,302			342,946
Senior unsecured notes, 5.625% coupon rate, due 2042 | Senior Unsecured Notes | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 218,260			211,400
Senior unsecured notes, 6.250% coupon rate, due 2046 | Senior Unsecured Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Coupon rate	6.25%
Senior unsecured notes, 6.250% coupon rate, due 2046 | Senior Unsecured Notes | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 243,905			243,627
Senior unsecured notes, 6.250% coupon rate, due 2046 | Senior Unsecured Notes | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value disclosure	$ 157,700			$ 154,000

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