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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract] |
Contractual Obligation, Fiscal Year Maturity Schedule | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
Year |  | Energy | ​ | Pharma
​ | ​ | (in millions)
2021 | ​ | $ | 127 | ​ | $ | 27
2022 | ​ |  | 83 | ​ |  | 14
2023 | ​ |  | 81 | ​ |  | 21
2024 | ​ |  | 77 | ​ |  | 14
2025 | ​ |  | 73 | ​ |  | 14
Thereafter | ​ |  | 325 | ​ |  | 57
​ | ​ | $ | 766 | ​ | $ | 147

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- Definition Tabular disclosure of contractual obligation by timing of payment due. Includes, but is not limited to, long-term debt obligation, lease obligation, and purchase obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph (a) -Subparagraph (5) + Details
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