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Restructuring (Tables)

3 Months Ended

Mar. 31, 2018

Restructuring And Related Activities [Abstract]

Rollforward of all restructuring activities

The following is a roll-forward of the Company's restructuring activities for the three months ended March 31, 2018 ($ in millions):

		Restructuring Reserve Balance as of December 31, 2017				Restructuring Expenses				Use of Reserve				Reserve Reclassification				Restructuring Reserve Balance as of March 31, 2018
Total		$	5.6			$	6.2			$	6.0			$	0.4			$	5.4

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- References

No definition available.

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- Definition

Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b)(2))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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