Derivative Instruments and Hedging Activities - Fair Values (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Foreign exchange contracts \| Other current assets
Derivative instruments and hedging activities
Derivative assets	$ 0.1	$ 4.5
Foreign exchange contracts \| Other current liabilities
Derivative instruments and hedging activities
Derivative liabilities	0.1	0.1
Embedded derivatives in purchase and delivery contracts \| Other current assets
Derivative instruments and hedging activities
Derivative assets	1.3	0.9
Embedded derivatives in purchase and delivery contracts \| Other current liabilities
Derivative instruments and hedging activities
Derivative liabilities	1.2	1.5
Embedded derivatives in purchase and delivery contracts \| Other long-term liabilities
Derivative instruments and hedging activities
Derivative liabilities	2.0	1.4
Fixed price commodity contracts \| Other current assets
Derivative instruments and hedging activities
Derivative assets	$ 0.2	$ 0.8

Fair value of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, not subject to a master netting arrangement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226052-175313

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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- Definition

Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, not subject to a master netting arrangement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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