Income Taxes - Schedule Of Income Tax Rate Reconciliation (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory rate			21.00%	35.00%	35.00%
Foreign provision (as a percent)			(15.90%)	(6.20%)	(5.10%)
Change in U.S. statutory rate (as a percent)			0.00%	293.10%	0.00%
Mandatory U.S. repatriation (as a percent)			0.00%	(39.70%)	0.00%
Change in tax position (as a percent)			0.00%	(31.10%)	0.00%
Goodwill impairment (as a percent)			0.00%	0.00%	(16.80%)
Other (as a percent)			2.60%	(3.60%)	0.20%
Effective rate			7.70%	247.50%	13.30%
Net deferred tax benefit due to U.S. tax law changes		$ 51.6
Tax charge related to change in tax position on foreign taxes	$ 6.3