Retirement Benefits, (As Restated for fiscal 2014 and 2013) - Schedule of One Percentage Point Change in Assumptions Effects on Projected Benefit Obligations (Details) $ in Millions	12 Months Ended
	Nov. 30, 2015 USD ($)
Compensation and Retirement Disclosure [Abstract]
Effect of 1% decrease on net periodic benefit expense components	$ 26.5
Effect of 1% increase on net periodic benefit expense components	(22.5)
Effect of 1% decrease on projected benefit obligation	166.1
Effect of 1% increase on projected benefit obligation	(139.6)
Effect of 1% decrease on net periodic pension benefit expense components	11.1
Effect of 1% increase on net periodic pension benefit expense components	(11.1)
Effect of 1% decrease on net periodic medical and life insurance benefit expense	(0.4)
Effect of 1% increase on net periodic medical and life insurance benefit expense	0.4
Effect of 1% decrease on accumulated benefit obligation	(1.3)
Effect of 1% increase on accumulated benefit obligation	$ 1.5