Goodwill (Tables)

9 Months Ended

Oct. 31, 2016

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 October 31, 2016 and January 31, 2016:

	October 31, 2016			January 31, 2016
Goodwill, beginning of the period	$	1,684.2		$	1,605.4
Less: accumulated impairment losses, beginning of the period	(149.2		)	(149.2		)
Additions arising from acquisitions during the period	62.8			97.3
Effect of foreign currency translation, purchase accounting adjustments, and other	(40.5		)	(18.5		)
Goodwill, end of the period	$	1,557.3		$	1,535.0