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Consolidated Statements of Shareholders' Equity Consolidated Statements of Shareholders' Equity (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Nov. 30, 2016
Nov. 30, 2015
Nov. 30, 2014
Statement of Stockholders' Equity [Abstract]      
Prior service credits, tax $ 0.0 $ 0.0 $ 0.1
Net actuarial loss, tax 2.1 (8.1) 18.7
Cumulative translation adjustment, tax $ (0.2) $ 3.5 $ (2.4)