Balance Sheet Accounts and Supplemental Disclosures, (As Restated for fiscal 2014 and 2013) - Schedule of Accumulated Other Comprehensive Loss, Net of Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ (333.7)	$ (228.3)
Actuarial losses arising during the period, net of income taxes	(56.6)	(136.0)
Amortization of actuarial losses and prior service credits, net of income taxes	(48.6)	30.6
Ending balance	(341.7)	(333.7)
Actuarial Losses, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(337.0)	(232.1)
Actuarial losses arising during the period, net of income taxes	(55.0)	(136.0)
Amortization of actuarial losses and prior service credits, net of income taxes	(49.4)	31.1
Ending balance	(342.6)	(337.0)
Prior Service Credits, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	3.3	3.8
Actuarial losses arising during the period, net of income taxes	(1.6)	0.0
Amortization of actuarial losses and prior service credits, net of income taxes	0.8	(0.5)
Ending balance	$ 0.9	$ 3.3