Retirement Benefits, (As Restated for fiscal 2014 and 2013) - Summary of Components of Retirement Benefit Expense (Income) (Details) - USD ($) $ in Millions		12 Months Ended
		Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 10.8	$ 8.8	$ 6.3
Interest cost on benefit obligation		63.6	67.1	61.0
Assumed return on plan assets	[1]	(88.1)	(92.6)	(96.4)
Amortization of prior service credits		0.0	0.0	0.0
Amortization of net losses (gains)		84.0	54.4	94.6
Retirement benefit expense (income)		70.3	37.7	65.5
Medical and Life Insurance Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost		0.0	0.1	0.1
Interest cost on benefit obligation		1.9	2.5	2.4
Assumed return on plan assets	[1]	0.0	0.0	0.0
Amortization of prior service credits		(1.1)	(0.9)	(0.9)
Amortization of net losses (gains)		(3.5)	(2.9)	(2.1)
Retirement benefit expense (income)		$ (2.7)	$ (1.2)	$ (0.5)

[1] The actual return and rate of return on plan assets are as follows: Year Ended 2015 2014 2013 (In millions, except rate of return)Actual return on plan assets$(64.2) $63.5 $141.4Actual rate of return on plan assets(6.1)% 5.1% 11.8%