Commitments and Contingencies (Details) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2015 USD ($) payment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Loss Contingencies [Line Items]
Rent expense		$ 43.6	$ 48.1	$ 43.8
Non-lease long-term supply contract, remaining amount		$ 10.4
Patent License Litigation
Loss Contingencies [Line Items]
Amount awarded to other party	$ 155.0
Number of quarterly settlement payments | payment	16