Goodwill (Tables)

3 Months Ended

Apr. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill

The following table summarizes the changes in the carrying amount of goodwill for the three months ended April 30, 2020 (in millions):

Balance as of January 31, 2020	$	2,594.2
Less: accumulated impairment losses as of January 31, 2020	(149.2		)
Net balance as of January 31, 2020	2,445.0
Effect of foreign currency translation	(14.8		)
Balance as of April 30, 2020	$	2,430.2