Acquisitions and Divestitures Acquisitions and Divestitures - Divestitures Narrative (Details) - USD ($) $ in Millions		3 Months Ended									12 Months Ended
	Apr. 30, 2015	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales		$ 654.8	$ 657.4	$ 673.6	$ 684.0	$ 714.4	$ 707.4	$ 728.0	$ 722.5		$ 2,669.8	$ 2,872.3	$ 20.6	$ 3,076.2
Proceeds from Divestiture of Businesses	$ 2.8					43.4
Gain (Loss) on Disposition of Business	$ 0.3					$ 29.0	$ 0.0	$ (0.3)	$ 0.0		0.0	28.7		0.0
Asset Impairment Charges											$ 3.9	$ 3.3		$ 98.9
Aerospace Overhaul [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses										$ 7.4
Asset Impairment Charges										$ 1.2