Goodwill (Tables)

3 Months Ended

Mar. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of amounts for goodwill and changes to carrying value by operating segment

The amounts for goodwill and changes to carrying value by operating segment are as follows (unaudited):

(millions)	Region One		Region Two		Region Three		Total
Balance as of December 31, 2015 (1)	$	337.5	$	62.7	$	31.1	$	431.3
Foreign currency translation	0.2		—		—		0.2
Balance as of March 31, 2016	$	337.7	$	62.7	$	31.1	$	431.5

(1) Due to the new segment reporting effective as of January 1, 2016, goodwill allocated to previous reporting units of Region One, Region Two, and Region Three have been aggregated into a single reporting unit, Region One. See also Note 13. Business Unit Segment Information for further discussion on certain organizational and executive leadership changes.