Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Hedging Transactions and Derivative Instruments - Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Fair value	$ 3.6	$ 1.1
Unrealized net losses arising during period	(2.5)	(1.4)	$ (0.2)
Cash Flow Hedging \| Designated as Hedging Instrument \| Foreign Exchange Forward and Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Unrealized net losses arising during period	3.2	1.6
Cash Flow Hedging \| Designated as Hedging Instrument \| Other accrued expenses
Derivatives, Fair Value [Line Items]
Fair value	3.6	1.1
Cash Flow Hedging \| Designated as Hedging Instrument \| Other liabilities
Derivatives, Fair Value [Line Items]
Fair value	0.2	0.6
Economic hedges \| Not Designated as Hedging Instrument \| Foreign Currency Gain (Loss) [Member]
Derivatives, Fair Value [Line Items]
Derivative, notional amount	0.0	0.8
Economic hedges \| Not Designated as Hedging Instrument \| Other accrued expenses
Derivatives, Fair Value [Line Items]
Fair value	$ 0.0	$ 0.1