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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jan. 01, 2018
Dec. 31, 2017
Nov. 30, 2018
Nov. 30, 2017
Nov. 30, 2018
Nov. 30, 2017
Income Tax Disclosure [Abstract]            
Unrecognized tax benefits, reduction resulting from lapse of applicable statute of limitations         $ 0.8  
Corporate income tax rate (as a percent) 21.00% 35.00%        
Income tax expense (benefit) as a percent of income before income taxes     6.90% 8.20% 7.20% 5.10%
Tax benefit recorded related to the recognition of excess tax benefits from share-based compensation     $ 0.7     $ 2.6
Unrecognized tax benefit from favorable resolution of uncertain tax position           $ 2.8