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Impairment and Restructuring Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Impairment and Restructuring Charges
Property, plant and equipment	$ 4.2	$ 16.0	$ 17.7
Intangible assets, net		36.4	35.6
Total impairment charges	4.2	52.4	53.3
Total impairment and restructuring charges	4.1	69.1	56.3
Cost of sales
Impairment and Restructuring Charges
Restructuring	(0.2)	12.8	1.6
Warehouse, delivery, selling, general and administrative expense
Impairment and Restructuring Charges
Restructuring	$ 0.1	2.9	1.0
Depreciation expense
Impairment and Restructuring Charges
Restructuring			$ 0.4
Non-operating expense
Impairment and Restructuring Charges
Restructuring		$ 1.0

X

- Definition

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.

+ References

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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.

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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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