Borrowings - Components of Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Debt outstanding	$ 2,558,251	$ 2,847,002
Less: Debt discount and issuance costs	(33,822)	(38,577)
Total	2,524,429	2,808,425
Term Loan
Debt Instrument [Line Items]
Debt outstanding	472,500	425,000
Senior Notes
Debt Instrument [Line Items]
Debt outstanding	300,000	0
Convertible Senior Notes
Debt Instrument [Line Items]
Debt outstanding	345,000	632,500
Americas revolving credit | Line of Credit
Debt Instrument [Line Items]
Debt outstanding	414,803	772,037
Europe revolving credit | Line of Credit
Debt Instrument [Line Items]
Debt outstanding	$ 1,025,948	$ 1,017,465