Balance Sheet Accounts and Supplemental Disclosures - Schedule of Intangible Assets (Detail) (USD $) In Millions, unless otherwise specified	Nov. 30, 2013	Nov. 30, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 157.3	$ 29.0
Accumulated Amortization	21.6	15.1
Net Carrying Amount	135.7	13.9
Customer Related [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	83.8	10.7
Accumulated Amortization	9.4	5.4
Net Carrying Amount	74.4	5.3
Intellectual Property/Trade Secrets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	34.2
Accumulated Amortization	1.1
Net Carrying Amount	33.1
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	0.5
Accumulated Amortization	0.1
Net Carrying Amount	0.4
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	20.5
Accumulated Amortization	0.3
Net Carrying Amount	20.2
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	18.3	18.3
Accumulated Amortization	10.7	9.7
Net Carrying Amount	$ 7.6	$ 8.6