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Debt (Tables) | 12 Months Ended
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Dec. 31, 2020
Debt |
Long-term debt | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31, |
​ |  | 2020 |  | 2019 |
​ | ​ | (In thousands) |
5.00% senior notes due September 2020 (1) | ​ | $ | — | ​ | $ | 282,046 | ​
4.625% senior notes due September 2021 (2) | ​ |  | 86,329 | ​ |  | 634,588 | ​
5.50% senior notes due January 2023 | ​ |  | 28,443 | ​ |  | 501,003 | ​
5.10% senior notes due September 2023 | ​ |  | 121,077 | ​ |  | 336,810 | ​
0.75% senior exchangeable notes due January 2024 | ​ |  | 279,700 | ​ |  | 472,603 | ​
5.75% senior notes due February 2025 | ​ | ​ | 610,818 | ​ |  | 781,502 | ​
6.50% senior priority guaranteed notes due February 2025 | ​ |  | 50,485 | ​ | ​ | — | ​
9.00% senior priority guaranteed notes due February 2025 | ​ | ​ | 192,032 | ​ | ​ | — | ​
7.25% senior guaranteed notes due January 2026 | ​ | ​ | 559,978 | ​ |  | — | ​
7.50% senior guaranteed notes due January 2028 | ​ | ​ | 389,609 | ​ |  | — | ​
2012 revolving credit facility (1) | ​ |  | — | ​ | ​ | 355,000 | ​
2018 revolving credit facility | ​ |  | 672,500 | ​ | ​ | — | ​
​ | ​ | ​ | 2,990,971 | ​ | ​ | 3,363,552 | ​
Less: deferred financing costs | ​ | ​ | 22,270 | ​ | ​ | 30,332 | ​
Long-term debt | ​ | $ | 2,968,701 | ​ | $ | 3,333,220 | ​
​
(1) | The 5.00% senior notes due September 2020 and 2012 Revolving Credit Facility were classified as long-term as of December 31, 2019 because we had the ability and intent to repay these obligations utilizing our 2018 Revolving Credit Facility.
​
(2) | The 4.625% senior notes due September 2021 are classified as long-term because we have the ability and intent to repay this obligation utilizing our 2018 Revolving Credit Facility.
Maturity of primary debt | ​
​ | ​ | ​ | ​ | ​
​ |  | Paid at Maturity |
​ | ​ | (In thousands) |
2021 | ​ | $ | 86,500 | (1)
2022 | ​ |  | — | ​
2023 | ​ |  | 822,361 | (2)
2024 | ​ |  | 324,322 | (3)
2025 | ​ |  | 853,335 | (4)
Thereafter | ​ |  | 949,587 | (5)
​ | ​ | $ | 3,036,105 | ​
(1) | Represents our 4.625% senior notes due September 2021.
​
(2) | Represents our 5.50% senior notes due January 2023, 5.10% senior notes due September 2023 and our 2018 Revolving Credit Facility due October 2023.
​
(3) | Represents our 0.75% senior notes due January 2024.
​
(4) | Represents our 5.75% senior notes due February 2025, 6.5% senior priority guaranteed notes due February 2025 and our 9.0% senior priority guaranteed notes due February 2025.
​
(5) | Represents our 7.25% senior notes due January 2026 and our 7.50% senior notes due January 2028.
The aggregate principal amounts and recognized gain | The aggregate principal amounts and recognized gain for such transactions were as follows (in thousands): ​
​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ |  | 2020
Exchanged: | ​ | ​
4.625% senior notes due September 2021 | ​ | $ | 38,209
5.50% senior notes due January 2023 | ​ | ​ | 3,733
5.10% senior notes due September 2023 | ​ |  | 19,422
0.75% senior exchangeable notes due January 2024 | ​ |  | 250,678
5.75% senior notes due February 2025 | ​ |  | 164,368
7.25% senior guaranteed notes due January 2026 | ​ |  | 40,022
7.50% senior guaranteed notes due January 2028 | ​ | ​ | 10,391
Aggregate principal amount exchanged | ​ |  | 526,823
Aggregate principal amount of debt issued in exchanges | ​ | ​ | 242,517
Aggregated net gain (loss) | ​ | ​ | 161,808
Per share amount of the aggregate gain | ​ | ​ | 19.30
Short-Term Borrowings | ​
​ | ​ | ​ | ​ | ​
​ |  | December 31, |
​ | ​ | 2020 |
​ | ​ | (In thousands) |
Credit available | ​ | $ | 630,552 | ​
Less: Letters of credit outstanding, inclusive of financial and performance guarantees | ​ |  | 114,984 | ​
Remaining availability | ​ | $ | 515,569 | ​

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