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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 |  |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-4 + Details
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