Shareholders' Deficit (Details)	12 Months Ended	36 Months Ended
	Dec. 31, 2019 USD ($) registered_shareholders $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Jan. 01, 2019 USD ($)	Jan. 01, 2018 USD ($)	Jan. 01, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Euro deferred shares, shares issued (in shares) | shares	4,000,000	4,000,000
Euro deferred shares, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Number of registered shareholders | registered_shareholders	7
Effect of adopting accounting principle in period of adoption			$ 4,646,000
ASU 2016-06
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect of adopting accounting principle in period of adoption					$ 372,825,000
ASU 2016-06 | Accumulated Deficit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect of adopting accounting principle in period of adoption					$ 372,825,000
ASC 606
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect of adopting accounting principle in period of adoption				$ (3,076,000)
ASC 606 | Accumulated Deficit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect of adopting accounting principle in period of adoption				$ (3,076,000)
ASC 842 | Accumulated Deficit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect of adopting accounting principle in period of adoption			$ 4,646,000
2015 Share Buyback Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount	$ 2,500,000,000
Treasury stock, shares, acquire (in shares) | shares		4,400,000
Treasury stock, value, acquired, cost method		$ 250,000,000.0