Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Condensed Consolidated Statements of Comprehensive Loss
Net loss		$ (84,546)	$ (69,132)
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustment	[1]	(14,198)	1,089
Defined benefit retirement plan	[2]	193	143
Change in cash flow hedging	[3]	(21,708)
Other comprehensive (loss) income, net of tax		(35,713)	1,232
Comprehensive loss		$ (120,259)	$ (67,900)

[1] Foreign currency translation adjustment is presented net of tax benefit of $3.8 million for the three months ended March 31, 2020, and tax expense of $0.3 million for the three months ended March 31, 2019

[2] Defined benefit retirement plan is presented net of tax expense of $0.1 million for the three months ended March 31, 2020, and nominal tax expense for the three months ended March 31, 2019.

[3] Change in cash flow hedging is presented net of tax benefit of $7.2 million for the three months ended March 31, 2020.