Stockholders' Equity Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax	$ (17.1)	$ (8.7)	$ (49.8)
Other comprehensive income (loss), tax effect	3.4	(1.2)	8.7
Other comprehensive loss	(13.7)	(9.9)	(41.1)
Provision for income taxes	(29.6)	(29.4)	(7.5)
Cost Of Sales And Selling General And Administrative Expenses [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of products sold and selling, general, and admin expense	7.2	7.1	4.7
Provision for income taxes	2.8	2.7	1.7
Unrealized foreign currency translation gains (losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax	(7.1)	(15.0)	(23.7)
Other comprehensive income (loss), tax effect	0.4	0.0	0.0
Other comprehensive loss	(6.7)	(15.0)	(23.7)
Adjustment to pension and other benefit liabilities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax	(10.0)	6.3	(26.1)
Other comprehensive income (loss), tax effect	3.0	(1.2)	8.7
Other comprehensive loss	(7.0)	5.1	(17.4)
Adjustment to pension and other benefit liabilities | Pension Plan Settlement Charge [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from AOCI, before tax	0.8	5.5	3.5
Reclassification from AOCI, tax	$ 0.2	$ 2.1	$ 1.3