Income Taxes, (As Restated for fiscal 2014 and 2013) - Summary of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Nov. 30, 2015	Nov. 30, 2014
Deferred Tax Assets
Accrued estimated costs	$ 112.4	$ 99.7
Basis difference in assets and liabilities	7.4	18.2
Tax losses and credit carryforwards	8.2	13.0
Net cumulative defined benefit pension plan losses	222.2	192.3
Retiree medical and life insurance benefits	19.9	22.7
Valuation allowance	(1.7)	(2.6)
Total deferred tax assets	368.4	343.3
Deferred Tax Liabilities
Revenue recognition differences	39.7	47.6
Basis differences in intangible assets	13.9	14.4
Total deferred tax liabilities	53.6	62.0
Total net deferred tax assets	$ 314.8	$ 281.3