Impairment and Restructuring Charges (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Impairment and Restructuring Charges
Property, plant and equipment	$ 1.2	$ 3.8	$ 4.2
Intangible assets, net		33.2
Total impairment charges	1.2	37.0	4.2
Total impairment and restructuring charges	$ 1.2	39.5	4.1
Cost of sales
Impairment and Restructuring Charges
Restructuring			(0.2)
Warehouse, delivery, selling, general and administrative expense
Impairment and Restructuring Charges
Restructuring		$ 2.5	$ 0.1

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.

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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.

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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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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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