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Income Taxes (Activity Related To Our Gross Unrecognized Tax Benefits) (Details) - USD ($)
$ in Millions
12 Months Ended
Nov. 30, 2015
Nov. 30, 2014
Nov. 30, 2013
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Balance at beginning of year $ 55.7 $ 58.0 $ 46.7
Additions for current year tax positions 8.9 11.4 10.3
Additions for prior year tax positions 3.2 0.7 2.2
Reductions for prior year tax positions (0.8) (9.5) 0.0
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities 0.1 3.5 0.0
Statute expirations (8.1) (0.7) (0.1)
Foreign currency translation (2.3) (0.7) (1.1)
Balance at end of year $ 56.5 $ 55.7 $ 58.0