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Restructuring and Related Activities, Number of Customer Service Locations Prior to Restructuring

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expected cost remaining for the specified restructuring cost.

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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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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.

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Business Acquisitions and Restructuring Charges - Restructuring Charges (Details) $ in Millions	1 Months Ended		3 Months Ended		6 Months Ended
	Jan. 31, 2016 region	Jan. 31, 2016 segment	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) segment	Jun. 30, 2017 USD ($)	Jun. 30, 2016 location
Restructuring Cost and Reserve [Line Items]
Number of reportable segments	3	2			2
Number of customer service locations to be consolidated (more than) \| location							100
Restructuring charges			$ 3.8	$ 4.1	$ 13.3	$ 8.5
Restructuring expenditures			4.2		12.6	$ 10.9
Consolidation of Customer Service Locations
Restructuring Cost and Reserve [Line Items]
Number of Customer Resource Centers after restructuring \| location							3
Field Realignment \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected charges to be incurred related to restructuring			5.0		5.0
Field Realignment \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected charges to be incurred related to restructuring			$ 10.0		$ 10.0