Goodwill (Tables)

9 Months Ended

Oct. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill

The following table summarizes the changes in the carrying amount of goodwill for the nine months ended October 31, 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
Additions arising from acquisitions during the period	31.4
Effect of foreign currency translation	7.8
Balance as of October 31, 2020	$	2,484.2