Income Taxes Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Inventories	$ 8.8	$ 6.8
Income tax credits	30.9	31.9
Accrued liabilities	20.8	25.0
Pension	77.6	58.2
Post retirement and post employment benefits	10.0	10.4
Stock-based compensation	17.5	12.6
Net operating loss carryforwards	27.2	31.0
Miscellaneous other	7.5	7.0
Gross deferred tax assets	200.3	182.9
Valuation allowance	(22.6)	(22.0)
Total deferred tax assets, net of valuation allowance	177.7	160.9
Deferred tax liabilities:
Acquisition basis difference	(162.1)	(149.2)
Property, plant, and equipment	(46.3)	(41.6)
Total deferred tax liabilities	(208.4)	(190.8)
Non-current tax assets (included in Other long-term assets)	10.5	6.2
Non-current tax liabilities (included in Other Non-current liabilities)	(41.2)	(36.1)
TOTAL NET DEFERRED TAX LIABILITY	$ (30.7)	$ (29.9)