Leases - Components of Lease Expense and Operating Lease Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Options to extend leases			true
Components of lease expense
Operating lease expense	$ 23,153	$ 17,654	$ 46,131	$ 34,167
Operating lease liabilities
Accrued liabilities	$ 78,444		$ 78,444		$ 74,036
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued Liabilities, Current		Accrued Liabilities, Current		Accrued Liabilities, Current
Noncurrent operating lease liabilities, net of current portion	$ 163,947		$ 163,947		$ 171,225
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Noncurrent operating lease liabilities, net of current portion		Noncurrent operating lease liabilities, net of current portion		Noncurrent operating lease liabilities, net of current portion
Operating lease liabilities	$ 242,391		$ 242,391		$ 245,261
Maximum
Renewal term	5 years		5 years