Fair Value Measurements and Derivatives (Textuals) (Details) T in Millions, $ in Millions, € in Billions |
12 Months Ended | ||
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Dec. 31, 2019
EUR (€)
T
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Dec. 31, 2019
USD ($)
T
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Dec. 31, 2018
USD ($)
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| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||
| Fair value of long-term debt | $ 6,957.8 | $ 6,601.9 | |
| Fair value of long-term debt in excess of carrying value | $ 31.3 | $ 8.4 | |
| Fuel contracts | |||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||
| Derivative maturing date | Dec. 31, 2022 | ||
| Projected fuel purchases | T | 1.1 | 1.1 | |
| Foreign currency contracts | |||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||
| Notional amount of derivatives | € 1.8 | $ 2,000.0 | |
| Interest rate contracts | |||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |||
| Notional amount of derivatives | $ 1,700.0 |
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- Definition Date the derivative contract matures, in CCYY-MM-DD format. No definition available.
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- Definition Nominal number of units used to calculate payment on derivative. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Nominal or face amount used to calculate payment on derivative. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition This item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of long-term debt instruments that have contractual principal amounts and for which the fair value option has been elected. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. No definition available.
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