Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Other current assets	$ 22.0	$ 0.0
Guarantees	8.0	8.0
Rent expense	13.0	$ 7.0	$ 6.0
Operating Leases
Future minimum lease payment due, total	88.0
2019	17.0
2020	14.0
2021	10.0
2022	7.0
2023	5.0
Thereafter	34.0
Capital Leases
Future minimum payments due	15.0
2019	1.0
2020	1.0
2021	12.0
2022	0.0
2023	0.0
Thereafter	1.0
Unconditional Purchase Obligations
Unconditional purchase obligation to be paid in 2019	10.0
Indemnification Asset
Loss Contingencies [Line Items]
Other current assets	14.0
Built-To-Suit Lease
Operating Leases
Future minimum lease payment due, total	51.0
2019	3.0
2020	3.0
2021	3.0
2022	3.0
2023	3.0
Thereafter	$ 36.0