Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense (benefit) as a percent of income before income taxes	10.30%	8.30%	9.00%	7.30%
Tax benefit recorded related to the recognition of excess tax benefits from share-based compensation			$ 0.8	$ 0.5
Expense for remeasurement of deferred taxes			1.7
Unrecognized tax benefit from favorable resolution of uncertain tax position			$ 2.8	$ 0.8