Fair Value Measurements and Risk - Derivative Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Asset Derivatives
Total derivatives	$ 0.7	$ 1.6
Liability Derivatives
Total derivatives	11.7	8.5
Designated as Hedging Instrument | Other current assets
Asset Derivatives
Commodity contracts	0.0	0.6
Currency contracts	0.1	0.7
Interest rate contracts	0.0	0.0
Designated as Hedging Instrument | Other assets
Asset Derivatives
Currency contracts		0.2
Interest rate contracts	0.0	0.0
Designated as Hedging Instrument | Other current liabilities
Liability Derivatives
Commodity contracts	0.1	0.1
Currency contracts	0.0	0.3
Interest rate contracts	4.2	4.1
Designated as Hedging Instrument | Other liabilities
Liability Derivatives
Currency contracts		0.0
Interest rate contracts	7.2	3.8
Not Designated as Hedging Instrument | Other current assets
Asset Derivatives
Currency contracts	0.6	0.1
Not Designated as Hedging Instrument | Other current liabilities
Liability Derivatives
Currency contracts	$ 0.2	$ 0.2