Impairment and Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Impairment and Restructuring Charges
Property, plant and equipment	$ 2.3	$ 2.8	$ 2.3	$ 2.8
Intangible assets, net	33.2		33.2
Total impairment charges	35.5	2.8	35.5	2.8
Total impairment and restructuring charges	36.8	2.1	36.8	2.4
Cost of sales
Impairment and Restructuring Charges
Restructuring				(0.2)
Warehouse, delivery, selling, general and administrative expense
Impairment and Restructuring Charges
Restructuring	$ 1.3	$ (0.7)	$ 1.3	$ (0.2)

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228

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-Publisher FASB
-Name Accounting Standards Codification
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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

+ References

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

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The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

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