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Debt - Carrying Value of Debt Outstanding (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020	Aug. 25, 2020	Jul. 01, 2020	Jun. 15, 2020
Debt Instrument [Line Items]
Finance Leases	$ 81,529,000	$ 77,874,000
Total debt	2,522,852,000	2,470,330,000
Less: current portion of long-term debt	16,557,000	16,521,000
Total long-term debt	$ 2,506,295,000	2,453,809,000
Senior Notes | 2025 Secured Notes
Debt Instrument [Line Items]
Interest rate	6.125%			6.125%	6.125%
Long-term debt	$ 517,054,000	637,068,000
Unamortized debt issuance costs	$ 9,500,000	12,900,000
Senior Notes | 2028 Secured Notes
Debt Instrument [Line Items]
Interest rate	4.625%		4.625%
Long-term debt	$ 492,017,000	491,555,000
Unamortized debt issuance costs	8,000,000.0	8,400,000
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	1,432,252,000	1,263,833,000
Line of Credit | 2020 ABL Facility - Multicurrency Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Outstanding principal	0	0
Unamortized debt issuance costs	$ 7,200,000	$ 7,900,000

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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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Contractual interest rate for funds borrowed, under the debt agreement.

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

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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