Income Taxes - Schedule of Deferred Income Taxes (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Assets
Net operating loss carryforwards	$ 58.9	$ 60.6
Unfunded pension liability and other postretirement obligations	5.6	4.8
Advanced payments from foreign affiliates		23.0
Tax credit carryforwards	13.0	5.0
Stock based compensation	16.2	16.1
Other comprehensive income	4.6	8.8
Reserves and other	20.8	21.2
Subtotal	119.1	139.5
Valuation allowance	(58.9)	(57.8)
Total assets	60.2	81.7
Liabilities
Accelerated depreciation	(160.6)	(118.0)
Accelerated amortization	(12.9)	(12.0)
Other	(0.4)	(0.3)
Total liabilities	(173.9)	(130.3)
Net deferred tax liabilities	$ (113.7)	$ (48.6)