Debt - Summary of Debt Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Other debt	$ 20,923	$ 42,027
Total notes payable and other obligations	3,804,579	4,065,812
Securitization facility	688,000	970,973
Total notes payable, credit agreements and Securitization Facility	4,492,579	5,036,785
Current portion	1,333,769	1,746,838
Long-term portion	3,158,810	3,289,947
Term Loan A
Debt Instrument [Line Items]
Term note payable—domestic, net of discounts	2,961,741	3,080,789
Term Loan B
Debt Instrument [Line Items]
Term note payable—domestic, net of discounts	338,131	340,481
Revolving line of credit A Facility
Debt Instrument [Line Items]
Revolving line of credit	410,000	325,000
Revolving line of credit B Facility
Debt Instrument [Line Items]
Revolving line of credit	45,694	225,477
Revolving line of credit A Facility - domestic swing line
Debt Instrument [Line Items]
Revolving line of credit	12,000	0
Revolving line of credit B Facility - foreign swing line
Debt Instrument [Line Items]
Revolving line of credit	$ 16,090	$ 52,038