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Financial Instruments and Fair Value Measurements - Narrative (Details) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 USD ($) swap | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 02, 2020 USD ($) | Aug. 17, 2020 USD ($) | Apr. 02, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Gain (loss) related to hedge ineffectiveness | $ 0 | $ 0 | $ 0 |  |  |
Amount expected to be reclassified from other comprehensive loss into earnings | $ 2,300,000 |  |  |  |  |
5.25% Senior Notes |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Interest rate | 5.25% |  |  |  |  | 5.25%
Redeemed aggregate principal amount |  |  |  |  |  | $ 300,000,000.0
5.00% Senior Notes |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Interest rate | 5.00% |  |  | 5.00% |  |
Redeemed aggregate principal amount |  |  |  | $ 550,000,000.0 |  |
4.00% Senior Notes |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Interest rate | 4.00% |  |  |  |  |
4.00% Senior Notes | Senior Notes |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Aggregate principal amount |  |  |  |  | $ 550,000,000.0 |
Interest rate | 4.00% |  |  |  |  |
Demand Notes |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Carrying value | $ 60,000,000.0 | $ 0 |  |  |  |
Interest Rate Swaps |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Number of additional forward interest rate swaps | swap | 36 |  |  |  |  |
Notional value | $ 798,700,000 |  |  |  |  |
Weighted average derivative interest rate | 1.40% |  |  |  |  |
Forward Interest Rate Swaps |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Number of additional forward interest rate swaps | swap | 10 |  |  |  |  |
Notional value | $ 575,000,000.0 |  |  |  |  |
Weighted average derivative interest rate | 1.40% |  |  |  |  |

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- Definition Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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