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Debt - Schedule of Long Term Debt (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Debt Instrument [Line Items] |  |
DEBT (INCLUSIVE OF DISCOUNT) | $ 9,216,038 | $ 8,797,424
UNAMORTIZED DEFERRED FINANCING COSTS | (82,621) | (94,110)
CARRYING AMOUNT | 9,133,417 | 8,703,314
Long-term debt, gross, current maturities | (319,025) | (193,759)
Long term debt, gross, net of current portion | 8,897,013 | 8,603,665
Unamortized debt issuance expense, net of current portion | 881 | 0
Unamortized debt issuance expense, net | (81,740) | (94,110)
Carrying amount, current maturities | (318,144) | (193,759)
Carrying amount, excluding current maturities | 8,815,273 | 8,509,555
Australian Dollar Term Loan (the AUD Term Loan) |  |
Debt Instrument [Line Items] |  |
DEBT (INCLUSIVE OF DISCOUNT) | 223,109 | 243,152
UNAMORTIZED DEFERRED FINANCING COSTS | (881) | (1,624)
CARRYING AMOUNT | 222,228 | 241,528
FAIR VALUE | 223,557 | 244,014
Real Estate Mortgages, Financing Lease Liabilities and Other |  |
Debt Instrument [Line Items] |  |
DEBT (INCLUSIVE OF DISCOUNT) | 483,934 | 511,922
UNAMORTIZED DEFERRED FINANCING COSTS | (905) | (1,086)
CARRYING AMOUNT | 483,029 | 510,836
FAIR VALUE | 483,934 | 511,922
Accounts Receivable Securitization Program |  |
Debt Instrument [Line Items] |  |
DEBT (INCLUSIVE OF DISCOUNT) | 266,400 | 85,000
UNAMORTIZED DEFERRED FINANCING COSTS | (449) | (152)
CARRYING AMOUNT | 265,951 | 84,848
FAIR VALUE | 266,400 | $ 85,000
Credit Agreement |  |
Debt Instrument [Line Items] |  |
Letters of credit outstanding | 36,506 |
Revolving Credit Facility | Credit Agreement |  |
Debt Instrument [Line Items] |  |
Letters of credit outstanding | 3,064 |
Remaining capacity | $ 1,436,936 |
Weighted average interest rate | 1.80% | 1.90%
New Credit Agreement | Revolving Credit Facility |  |
Debt Instrument [Line Items] |  |
DEBT (INCLUSIVE OF DISCOUNT) | $ 310,000 | $ 0
UNAMORTIZED DEFERRED FINANCING COSTS | (6,034) | (8,620)
CARRYING AMOUNT | 303,966 | (8,620)
FAIR VALUE | 310,000 | 0
Term Loan A | Term Loan Facility |  |
Debt Instrument [Line Items] |  |
DEBT (INCLUSIVE OF DISCOUNT) | 206,250 | 215,625
UNAMORTIZED DEFERRED FINANCING COSTS | 0 | 0
CARRYING AMOUNT | 206,250 | 215,625
FAIR VALUE | 206,250 | 215,625
Term Loan B | Term Loan Facility |  |
Debt Instrument [Line Items] |  |
DEBT (INCLUSIVE OF DISCOUNT) | 674,540 | 679,621
UNAMORTIZED DEFERRED FINANCING COSTS | (5,308) | (6,244)
CARRYING AMOUNT | 669,232 | 673,377
FAIR VALUE | 675,500 | 680,750
UK Bilateral Revolving Credit Facility | Revolving Credit Facility |  |
Debt Instrument [Line Items] |  |
DEBT (INCLUSIVE OF DISCOUNT) | 188,431 | 191,101
UNAMORTIZED DEFERRED FINANCING COSTS | (874) | (1,307)
CARRYING AMOUNT | 187,557 | 189,794
FAIR VALUE | $ 188,431 | 191,101
GBP Senior Notes due 2025 3.875 Percent | Senior Notes |  |
Debt Instrument [Line Items] |  |
Stated interest rate (as a percent) | 3.875% |
DEBT (INCLUSIVE OF DISCOUNT) | $ 538,374 | 546,003
UNAMORTIZED DEFERRED FINANCING COSTS | (4,151) | (4,983)
CARRYING AMOUNT | 534,223 | 541,020
FAIR VALUE | $ 544,431 | 553,101
Senior Notes 4.875 Percent due 2027 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Stated interest rate (as a percent) | 4.875% |
DEBT (INCLUSIVE OF DISCOUNT) | $ 1,000,000 | 1,000,000
UNAMORTIZED DEFERRED FINANCING COSTS | (8,532) | (9,598)
CARRYING AMOUNT | 991,468 | 990,402
FAIR VALUE | $ 1,035,000 | 1,046,250
Senior Notes 5.25 Percent due 2028 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Stated interest rate (as a percent) | 5.25% |
DEBT (INCLUSIVE OF DISCOUNT) | $ 825,000 | 825,000
UNAMORTIZED DEFERRED FINANCING COSTS | (7,676) | (8,561)
CARRYING AMOUNT | 817,324 | 816,439
FAIR VALUE | $ 861,094 | 868,313
Senior Notes 5 Percent Due 2028 Member | Senior Notes |  |
Debt Instrument [Line Items] |  |
Stated interest rate (as a percent) | 5.00% |
DEBT (INCLUSIVE OF DISCOUNT) | $ 500,000 | 500,000
UNAMORTIZED DEFERRED FINANCING COSTS | (4,944) | (5,486)
CARRYING AMOUNT | 495,056 | 494,514
FAIR VALUE | $ 521,250 | 523,125
Senior Notes 4.875 Percent due 2029 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Stated interest rate (as a percent) | 4.875% |
DEBT (INCLUSIVE OF DISCOUNT) | $ 1,000,000 | 1,000,000
UNAMORTIZED DEFERRED FINANCING COSTS | (11,573) | (12,658)
CARRYING AMOUNT | 988,427 | 987,342
FAIR VALUE | $ 1,047,500 | 1,050,000
Senior Notes 5.25 Percent Due 2030 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Stated interest rate (as a percent) | 5.25% |
DEBT (INCLUSIVE OF DISCOUNT) | $ 1,300,000 | 1,300,000
UNAMORTIZED DEFERRED FINANCING COSTS | (13,287) | (14,416)
CARRYING AMOUNT | 1,286,713 | 1,285,584
FAIR VALUE | $ 1,376,375 | 1,400,750
Senior Notes 4.5 Percent Due 2031 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Stated interest rate (as a percent) | 4.50% |
DEBT (INCLUSIVE OF DISCOUNT) | $ 1,100,000 | 1,100,000
UNAMORTIZED DEFERRED FINANCING COSTS | (11,715) | (12,648)
CARRYING AMOUNT | 1,088,285 | 1,087,352
FAIR VALUE | $ 1,111,000 | 1,138,500
Senior Notes 5.625 Percent Due 2032 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Stated interest rate (as a percent) | 5.625% |
DEBT (INCLUSIVE OF DISCOUNT) | $ 600,000 | 600,000
UNAMORTIZED DEFERRED FINANCING COSTS | (6,292) | (6,727)
CARRYING AMOUNT | 593,708 | 593,273
FAIR VALUE | $ 642,000 | $ 660,000

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