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Fair Value Measurements (Tables) | 9 Months Ended
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Sep. 30, 2019
Fair Value Measurements |
Fair value of financial instruments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2019 | ​ | December 31, 2018
​ | ​ | Carrying | ​ | Fair | ​ | Carrying | ​ | Fair
​ |  | Value |  | Value |  | Value |  | Value
​ | ​ | (In thousands)
5.00% senior notes due September 2020 |  | $ | 293,217 | ​ | $ | 287,696 |  | $ | 614,748 | ​ | $ | 590,336
4.625% senior notes due September 2021 |  |  | 637,528 | ​ |  | 602,968 |  |  | 668,347 | ​ |  | 603,457
5.50% senior notes due January 2023 |  |  | 577,042 | ​ |  | 475,408 |  |  | 586,000 | ​ |  | 465,999
5.10% senior notes due September 2023 |  |  | 336,778 | ​ |  | 262,350 |  |  | 342,923 | ​ |  | 262,494
0.75% senior exchangeable notes due January 2024 |  |  | 467,034 | ​ |  | 368,483 |  |  | 450,689 | ​ |  | 358,012
5.75% senior notes due February 2025 | ​ |  | 781,502 | ​ |  | 582,696 |  |  | 791,502 | ​ |  | 598,953
2012 Revolving credit facility |  |  | 455,000 | ​ |  | 455,000 |  |  | 170,000 | ​ |  | 170,000
2018 Revolving credit facility |  |  | — | ​ |  | — |  |  | — | ​ |  | —
Other |  |  | 1,058 | ​ |  | 1,058 |  |  | 561 | ​ |  | 561
​ | ​ | ​ | 3,549,159 | ​ | $ | 3,035,659 | ​ | ​ | 3,624,770 | ​ | $ | 3,049,812
Less: current portion | ​ | ​ | 1,058 | ​ | ​ | ​ | ​ | ​ | 561 | ​ | ​ | ​
Less: deferred financing costs | ​ | ​ | 31,509 | ​ | ​ | ​ | ​ | ​ | 38,325 | ​ | ​ | ​
​ | ​ | $ | 3,516,592 | ​ | ​ | ​ | ​ | $ | 3,585,884 | ​ | ​ | ​

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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