CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parentheticals) - USD ($) $ in Millions	12 Months Ended
Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
Statement of Comprehensive Income [Abstract]
Net (loss) gain on derivative instruments, tax	$ (1.1)
Net (loss) gain on derivative instruments, tax		$ (1.1)	$ 3.2
Change in net unrealized gain (loss) on available-for-sale securities, tax	(0.4)	0.0	0.1
Change in defined pension items, tax	1.6	(2.0)	(0.7)
Net change in cumulative foreign currency translation (loss) gain, tax	$ 0.1	$ 0.5	$ (4.8)

Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.

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