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Debt - Schedule of Long Term Debt (Details) € in Thousands, $ in Thousands, $ in Thousands | 1 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 22, 2019 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2019 EUR (€) | Sep. 30, 2019 AUD ($) | Sep. 30, 2019 CAD ($) | Dec. 31, 2018 USD ($) | Mar. 22, 2018 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 8,704,642,000 |  |  |  | $ 8,229,430,000 |
Long-term debt, gross, current maturities |  | (394,822,000) |  |  |  | (126,406,000) |
Long term debt, gross, net of current portion |  | 8,309,820,000 |  |  |  | 8,103,024,000 |
Unamortized Deferred Financing Costs |  | (89,473,000) |  |  |  | (86,607,000) |
Unamortized debt issuance expense, current |  | 0 |  |  |  | 0 |
Unamortized debt issuance expense, net |  | (89,473,000) |  |  |  | (86,607,000) |
Carrying Amount |  | 8,615,169,000 |  |  |  | 8,142,823,000 |
Carrying Amount, current maturities |  | (394,822,000) |  |  |  | (126,406,000) |
Carrying Amount, excluding current maturities |  | 8,220,347,000 |  |  |  | 8,016,417,000 |
Revolving Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Letters of credit outstanding |  | 16,843,000 |  |  |  |  |
Remaining capacity |  | 1,378,278,000 |  |  |  |  |
Australian Dollar Term Loan |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | 219,871,000 |  |  |  | 233,955,000 |
Unamortized Deferred Financing Costs |  | (2,389,000) |  |  |  | (3,084,000) |
Carrying Amount |  | 217,482,000 |  | $ 327,500 |  | 230,871,000 |
Fair Value |  | $ 221,165,000 |  |  |  | 235,645,000 |
Average interest rate (as a percent) |  | 4.90% | 4.90% | 4.90% | 4.90% |  |
Debt instrument, unamortized discount |  | $ 1,294,000 |  |  |  | 1,690,000 |
Senior Notes 4.375 Percent due 2021 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | 500,000,000 |  |  |  | 500,000,000 |
Unamortized Deferred Financing Costs |  | (2,866,000) |  |  |  | (4,155,000) |
Carrying Amount |  | 497,134,000 |  |  |  | 495,845,000 |
Fair Value |  | $ 503,750,000 |  |  |  | 488,750,000 |
Stated interest rate (as a percent) |  | 4.375% | 4.375% | 4.375% | 4.375% |  |
Senior Notes 6% percent due 2023 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 600,000,000 |  |  |  | 600,000,000 |
Unamortized Deferred Financing Costs |  | (4,302,000) |  |  |  | (5,126,000) |
Carrying Amount |  | 595,698,000 |  |  |  | 594,874,000 |
Fair Value |  | $ 615,000,000 |  |  |  | 606,000,000 |
Stated interest rate (as a percent) |  | 6.00% | 6.00% | 6.00% | 6.00% |  |
CAD Senior Notes 5.375 Percent due 2023 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 188,811,000 |  |  |  | 183,403,000 |
Unamortized Deferred Financing Costs |  | (2,173,000) |  |  |  | (2,506,000) |
Carrying Amount |  | 186,638,000 |  |  |  | 180,897,000 |
Fair Value |  | $ 194,475,000 |  |  |  | 186,154,000 |
Stated interest rate (as a percent) |  | 5.375% | 5.375% | 5.375% | 5.375% |  |
Senior Subordinated Notes 5 3/4% percent due 2024 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 1,000,000,000 |  |  |  | 1,000,000,000 |
Unamortized Deferred Financing Costs |  | (6,752,000) |  |  |  | (7,782,000) |
Carrying Amount |  | 993,248,000 |  |  |  | 992,218,000 |
Fair Value |  | $ 1,010,000,000 |  |  |  | 940,000,000 |
Stated interest rate (as a percent) |  | 5.75% | 5.75% | 5.75% | 5.75% |  |
Euro Senior Notes 3 Percent due 2025 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 327,508,000 |  |  |  | 343,347,000 |
Unamortized Deferred Financing Costs |  | (3,622,000) |  |  |  | (4,098,000) |
Carrying Amount |  | 323,886,000 |  |  |  | 339,249,000 |
Fair Value |  | $ 334,877,000 |  |  |  | 321,029,000 |
Stated interest rate (as a percent) |  | 3.00% | 3.00% | 3.00% | 3.00% |  |
GBP Senior Notes due 2025 3.875 Percent |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 491,943,000 |  |  |  | 509,425,000 |
Unamortized Deferred Financing Costs |  | (5,651,000) |  |  |  | (6,573,000) |
Carrying Amount |  | 486,292,000 |  |  |  | 502,852,000 |
Fair Value |  | $ 493,173,000 |  |  |  | 453,811,000 |
Stated interest rate (as a percent) |  | 3.875% | 3.875% | 3.875% | 3.875% |  |
Senior Notes 5.375 Percent due 2026 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 250,000,000 |  |  |  | 250,000,000 |
Unamortized Deferred Financing Costs |  | (2,863,000) |  |  |  | (3,185,000) |
Carrying Amount |  | 247,137,000 |  |  |  | 246,815,000 |
Fair Value |  | $ 257,500,000 |  |  |  | 224,375,000 |
Stated interest rate (as a percent) |  | 5.375% | 5.375% | 5.375% | 5.375% |  |
Senior Notes 4.875 Percent due 2027 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 1,000,000,000 |  |  |  | 1,000,000,000 |
Unamortized Deferred Financing Costs |  | (11,375,000) |  |  |  | (12,442,000) |
Carrying Amount |  | 988,625,000 |  |  |  | 987,558,000 |
Fair Value |  | $ 1,022,500,000 |  |  |  | 855,000,000 |
Stated interest rate (as a percent) |  | 4.875% | 4.875% | 4.875% | 4.875% |  |
Senior Notes 5.25 Percent due 2028 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 825,000,000 |  |  |  | 825,000,000 |
Unamortized Deferred Financing Costs |  | (10,037,000) |  |  |  | (10,923,000) |
Carrying Amount |  | 814,963,000 |  |  |  | 814,077,000 |
Fair Value |  | $ 852,844,000 |  |  |  | 713,625,000 |
Stated interest rate (as a percent) |  | 5.25% | 5.25% | 5.25% | 5.25% |  |
Senior Notes 4.875 Percent due 2029 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 1,000,000,000 |  |  |  | 0 |
Unamortized Deferred Financing Costs |  | (14,451,000) |  |  |  | 0 |
Carrying Amount |  | 985,549,000 |  |  |  | 0 |
Fair Value |  | $ 1,015,000,000 |  |  |  | 0 |
Stated interest rate (as a percent) |  | 4.875% | 4.875% | 4.875% | 4.875% |  |
Principal amount |  | $ 1,000,000,000 |  |  |  |  |
Net proceeds | $ 987,500,000 |  |  |  |  |  |
Real Estate Mortgages, Capital Leases and Other |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | 533,549,000 |  |  |  | 606,702,000 |
Unamortized Deferred Financing Costs |  | (444,000) |  |  |  | (171,000) |
Carrying Amount |  | 533,105,000 |  |  |  | 606,531,000 |
Fair Value |  | 533,549,000 |  |  |  | 606,702,000 |
Accounts Receivable Securitization Program |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | 271,562,000 |  |  |  | 221,673,000 |
Unamortized Deferred Financing Costs |  | (115,000) |  |  |  | (218,000) |
Carrying Amount |  | 271,447,000 |  |  |  | 221,455,000 |
Fair Value |  | $ 271,562,000 |  |  |  | 221,673,000 |
Average interest rate (as a percent) |  | 3.10% | 3.10% | 3.10% | 3.10% |  |
Mortgage Securitization Program |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 50,000,000 |  |  |  | 50,000,000 |
Unamortized Deferred Financing Costs |  | (1,019,000) |  |  |  | (1,128,000) |
Carrying Amount |  | 48,981,000 |  |  |  | 48,872,000 |
Fair Value |  | $ 50,000,000 |  |  |  | 50,000,000 |
Average interest rate (as a percent) |  | 3.50% | 3.50% | 3.50% | 3.50% |  |
New Credit Agreement |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Average interest rate (as a percent) |  | 3.50% | 3.50% | 3.50% | 3.50% |  |
New Credit Agreement | Revolving Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 354,879,000 |  |  |  | 793,832,000 |
Unamortized Deferred Financing Costs |  | (11,763,000) |  |  |  | (14,117,000) |
Carrying Amount |  | 343,116,000 |  |  |  | 779,715,000 |
Fair Value |  | $ 354,879,000 |  |  |  | 793,832,000 |
Average interest rate (as a percent) |  | 3.30% | 3.30% | 3.30% | 3.30% |  |
Term Loan A | Term Loan Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 231,250,000 |  |  |  | 240,625,000 |
Unamortized Deferred Financing Costs |  | 0 |  |  |  | 0 |
Carrying Amount |  | 231,250,000 |  |  |  | 240,625,000 |
Fair Value |  | $ 231,250,000 |  |  |  | 240,625,000 |
Average interest rate (as a percent) |  | 3.80% | 3.80% | 3.80% | 3.80% |  |
Term Loan B | Term Loan Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 688,089,000 |  |  |  | 693,169,000 |
Unamortized Deferred Financing Costs |  | (7,806,000) |  |  |  | (8,742,000) |
Carrying Amount |  | 680,283,000 |  |  |  | 684,427,000 |
Fair Value |  | $ 688,638,000 |  |  |  | 660,013,000 |
Average interest rate (as a percent) |  | 3.80% | 3.80% | 3.80% | 3.80% |  |
Debt instrument, unamortized discount |  | $ 1,411,000 |  |  |  | 1,581,000 |
UK Bilateral Revolving Credit Facility | Revolving Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | 172,180,000 |  |  |  | 178,299,000 |
Unamortized Deferred Financing Costs |  | (1,845,000) |  |  |  | (2,357,000) |
Carrying Amount |  | 170,335,000 |  |  |  | 175,942,000 |
Fair Value |  | $ 172,180,000 |  |  |  | $ 178,299,000 |
Line of credit facility, interest rate at period end |  | 3.00% | 3.00% | 3.00% | 3.00% |  |
Term Loan Facility | Term Loan B | Loans Payable |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 700,000,000
US Dollars | New Credit Agreement | Term Loan Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  | $ 221,900,000 |  |  |  |  |
Canadian dollars | New Credit Agreement | Term Loan Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) |  |  |  |  | $ 72,000 |  |
Euro | New Credit Agreement | Term Loan Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt (inclusive of discount) | € |  |  | € 72,000 |  |  |  |

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