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Income Taxes (Details 3) - USD ($)
$ in Millions
Nov. 30, 2018
Dec. 01, 2017
Income Tax Examination [Line Items]    
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued $ 24.6 $ 23.6
Minimum    
Income Tax Examination [Line Items]    
Estimated potential effect in underlying unrecognized tax benefits, maximum 0.0  
Maximum    
Income Tax Examination [Line Items]    
Estimated potential effect in underlying unrecognized tax benefits, maximum $ 45.0