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Retirement Benefits, (As Restated for fiscal 2014 and 2013) - Narrative - Plan Results (Details) - USD ($)
$ in Millions
12 Months Ended
Nov. 30, 2015
Nov. 30, 2014
Compensation and Retirement Disclosure [Abstract]    
Defined benefit plan, accumulated benefit obligation $ 1,549.4 $ 1,666.0
Defined benefit plan, multiple of unamortized gains and losses used to calculate annual benefit costs 20.00%  
Difference between expected return and actual return on market-related value of assets which smoothes asset values (in years) 3 years