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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

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: 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(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section S45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68176171&loc=SL68176184-208336 + Details
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