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Fair Value Measurements - Debt instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022	Mar. 21, 2022	Jan. 31, 2017
Carrying Value
Gross carrying value of debt	$ 3,175,132		$ 2,559,996
Less: current portion	629,621
Less: deferred financing costs	33,992		22,456
Long-term debt	$ 2,511,519		$ 2,537,540
5.10% senior notes due September 2023
Fair Value of Financial Instruments
Interest rate on senior notes (as a percent)	5.10%	5.10%	5.10%
Effective Interest Rate			5.46%
Carrying Value
Gross carrying value of debt			$ 52,004
0.75% senior exchangeable notes due January 2024
Fair Value of Financial Instruments
Interest rate on senior notes (as a percent)	0.75%		0.75%	0.75%	0.75%
Effective Interest Rate	0.84%		0.97%
Carrying Value
Gross carrying value of debt	$ 155,529		$ 177,005
5.75% senior notes due February 2025
Fair Value of Financial Instruments
Interest rate on senior notes (as a percent)	5.75%		5.75%
Effective Interest Rate	5.97%		6.02%
Carrying Value
Gross carrying value of debt	$ 474,092		$ 474,092
9.00% senior priority guaranteed notes due February 2025
Fair Value of Financial Instruments
Interest rate on senior notes (as a percent)	9.00%		9.00%
Effective Interest Rate			9.00%
Carrying Value
Gross carrying value of debt			$ 209,384
7.25% senior guaranteed notes due January 2026
Fair Value of Financial Instruments
Interest rate on senior notes (as a percent)	7.25%		7.25%
Effective Interest Rate	7.53%		7.52%
Carrying Value
Gross carrying value of debt	$ 555,902		$ 557,902
7.375% senior priority guaranteed notes due May 2027
Fair Value of Financial Instruments
Interest rate on senior notes (as a percent)	7.375%		7.375%
Effective Interest Rate	7.72%		7.74%
Carrying Value
Gross carrying value of debt	$ 700,000		$ 700,000
7.50% senior guaranteed notes due January 2028
Fair Value of Financial Instruments
Interest rate on senior notes (as a percent)	7.50%		7.50%
Effective Interest Rate	7.69%		7.70%
Carrying Value
Gross carrying value of debt	$ 389,609		$ 389,609
1.75% senior exchangeable notes due June 2029
Fair Value of Financial Instruments
Interest rate on senior notes (as a percent)	1.75%
Effective Interest Rate	2.26%
Carrying Value
Gross carrying value of debt	$ 250,000
9.125% senior priority guaranteed notes due January 2030
Fair Value of Financial Instruments
Interest rate on senior notes (as a percent)	9.125%
Effective Interest Rate	9.40%
Carrying Value
Carrying Value
Gross carrying value of debt	$ 3,175,132		2,559,996
Less: current portion	629,621
Less: deferred financing costs	33,992		22,456
Long-term debt	2,511,519		2,537,540
Carrying Value \| 5.10% senior notes due September 2023
Carrying Value
Gross carrying value of debt			52,004
Carrying Value \| 0.75% senior exchangeable notes due January 2024
Carrying Value
Gross carrying value of debt	155,529		177,005
Carrying Value \| 5.75% senior notes due February 2025
Carrying Value
Gross carrying value of debt	474,092		474,092
Carrying Value \| 9.00% senior priority guaranteed notes due February 2025
Carrying Value
Gross carrying value of debt			209,384
Carrying Value \| 7.25% senior guaranteed notes due January 2026
Carrying Value
Gross carrying value of debt	555,902		557,902
Carrying Value \| 7.375% senior priority guaranteed notes due May 2027
Carrying Value
Gross carrying value of debt	700,000		700,000
Carrying Value \| 7.50% senior guaranteed notes due January 2028
Carrying Value
Gross carrying value of debt	389,609		389,609
Carrying Value \| 1.75% senior exchangeable notes due June 2029
Carrying Value
Gross carrying value of debt	250,000
Carrying Value \| 9.125% senior priority guaranteed notes due January 2030
Carrying Value
Gross carrying value of debt	650,000
Fair Value
Fair Value
Debt at fair value	3,028,307		2,455,050
Fair Value \| 5.10% senior notes due September 2023
Fair Value
Debt at fair value			51,354
Fair Value \| 0.75% senior exchangeable notes due January 2024
Fair Value
Debt at fair value	154,989		164,898
Fair Value \| 5.75% senior notes due February 2025
Fair Value
Debt at fair value	474,120		454,773
Fair Value \| 9.00% senior priority guaranteed notes due February 2025
Fair Value
Debt at fair value			213,507
Fair Value \| 7.25% senior guaranteed notes due January 2026
Fair Value
Debt at fair value	535,328		529,432
Fair Value \| 7.375% senior priority guaranteed notes due May 2027
Fair Value
Debt at fair value	687,526		686,686
Fair Value \| 7.50% senior guaranteed notes due January 2028
Fair Value
Debt at fair value	334,090		$ 354,400
Fair Value \| 1.75% senior exchangeable notes due June 2029
Fair Value
Debt at fair value	185,383
Fair Value \| 9.125% senior priority guaranteed notes due January 2030
Fair Value
Debt at fair value	$ 656,871