Goodwill (Tables)

9 Months Ended

Sep. 30, 2019

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 reportable segment are as follows:

(millions) (unaudited)	Segment One		Segment Two		Total
Balance as of December 31, 2018	$	368.7	$	216.8	$	585.5
Foreign currency translation	0.1		—		0.1
Purchase price adjustments	—		0.1		0.1
Balance as of September 30, 2019	$	368.8	$	216.9	$	585.7