Debt - Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Principal amount outstanding	$ 2,006,046	$ 2,207,514
Less: deferred financing fees	(27,245)	(23,908)
Net balance sheet carrying amount	1,978,801	2,183,606
Other
Debt Instrument [Line Items]
Principal amount outstanding	6,046	6,545
2020 Credit Agreement \| Term Loan Facility
Debt Instrument [Line Items]
Principal amount outstanding	395,000	0
2020 Credit Agreement \| Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Principal amount outstanding	5,000	0
2016 Credit Facility Agreement \| Term Loan A
Debt Instrument [Line Items]
Principal amount outstanding	0	1,252,969
2016 Credit Facility Agreement \| Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Principal amount outstanding	0	148,000
Senior Notes Due 2025 \| Senior Notes
Debt Instrument [Line Items]
Principal amount outstanding	0	800,000
Senior Notes Due 2028 \| Senior Notes
Debt Instrument [Line Items]
Principal amount outstanding	800,000	0
Senior Notes Due 2030 \| Senior Notes
Debt Instrument [Line Items]
Principal amount outstanding	$ 800,000	$ 0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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