Impairment and Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Impairment and Restructuring Charges
Property, plant and equipment	$ 2.3	$ 1.2	$ 2.3
Intangible assets, net	33.2		33.2
Total impairment charges	35.5	1.2	35.5
Total impairment and restructuring charges	36.8	$ 1.2	36.8
Warehouse, delivery, selling, general and administrative expense
Impairment and Restructuring Charges
Restructuring	$ 1.3		$ 1.3

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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