Goodwill (Tables)

3 Months Ended

Apr. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table summarizes the changes in the carrying amount of goodwill for the periods ended April 30, 2017 and January 31, 2017:

	April 30, 2017			January 31, 2017
Goodwill, beginning of the period	$	1,710.3		$	1,684.2
Less: accumulated impairment losses, beginning of the period	(149.2		)	(149.2		)
Additions arising from acquisitions during the period	—			62.8
Effect of foreign currency translation, purchase accounting adjustments, and other	9.6			(36.7		)
Goodwill, end of the period	$	1,570.7		$	1,561.1