Breakdown of Revenue and Non-Current Assets by Geographical Areas - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($) market	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) market	Jun. 30, 2019 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of geographical markets | market	3		3
Revenue	$ 437,614	$ 528,147	$ 940,990	$ 1,086,270
Sales Revenue, Net | Customer Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage			1.10%	1.40%
France
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 27,300	$ 35,200	$ 59,300	$ 72,600