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Long-Term Debt - Amendments to the Credit Agreement (Details) - USD ($) |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 19, 2019 | Aug. 15, 2019 | Sep. 30, 2016 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jun. 12, 2019 | Jun. 11, 2019 | Nov. 30, 2017
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  | $ 3,749,200,000 |  |  |  |  |
Additional proceeds under term loan |  |  |  | 1,404,800,000 | $ 15,300,000 | $ 1,106,200,000 |  |  |
Consolidated total net leverage ratio |  |  |  |  |  |  | 450.00% | 400.00% |
Minimum acquisition consideration |  |  |  | 250,000,000.0 |  |  |  |  |
Term Loan B Facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt | $ 1,635,000,000 |  | $ 2,400,000,000 | $ 2,400,000,000 |  |  |  |  |
Additional proceeds under term loan |  |  | $ 200,000,000.0 |  |  |  |  |  |
Increase to loan borrowing capacity | $ 500,500,000 |  |  |  |  |  |  |  |
Term Loan B Facility | Eurocurrency Loans |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Applicable margin | 2.00% |  |  |  |  |  |  |  |
Term Loan B Facility | Adjustable Base Rate Loans |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Applicable margin | 1.00% |  |  |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 1,970,000,000 |  |  |  |  | $ 1,900,000,000 |  | $ 1,000,000,000.0
Increase in borrowing capacity |  | $ 70,000,000.0 |  |  |  |  |  |  |
Repayments of Revolving Credit Facility | $ 500,000,000.0 |  |  |  |  |  |  |  |

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