Balance Sheet Accounts and Supplemental Disclosures - Schedule of Other Current Liabilities (Detail) (USD $) In Millions, unless otherwise specified	May 31, 2013	Nov. 30, 2012	Nov. 30, 2011
Schedule Of Other Liabilities [Line Items]
Accrued compensation and employee benefits	$ 57.9	$ 49.6
Accrued compensation and employee benefits		49.6	44.0
Interest payable	13.0	6.3	7.9
Contract loss provisions	5.0	5.7	4.7
Legal settlements	2.6	7.0	10.7
Other	47.8	34.7	36.8
Other current liabilities	$ 126.3	$ 103.3	$ 104.1

Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

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