Fair Values of Derivative Instruments on Balance Sheet (Detail) (USD $) In Millions, unless otherwise specified	May 31, 2012	Nov. 30, 2011	May 31, 2011
Derivatives, Fair Value [Line Items]
Fair value of asset derivatives	$ 19.6	$ 21.6	$ 21.2
Fair value of liability derivatives	2.7	0.4	3.6
Other Current Assets
Derivatives, Fair Value [Line Items]
Notional amount of interest rate contracts	100.0	100.0	100.0
Notional amount of foreign exchange contracts	30.3	97.4	187.3
Fair value of interest rate contracts	17.9	18.9	17.7
Fair value of foreign exchange contracts	1.7	2.7	3.5
Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Notional amount of interest rate contracts			150.0
Notional amount of foreign exchange contracts	142.4	30.2	38.2
Fair value of interest rate contracts			0.9
Fair value of foreign exchange contracts	$ 2.7	$ 0.4	$ 2.7

Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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-Publisher FASB

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Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value as of the balance sheet date of foreign currency derivative assets, net of foreign currency derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.

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Fair value as of the balance sheet date of interest rate derivative assets, net of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.

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Aggregate notional amount of foreign currency exchange rate derivatives. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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Aggregate notional amount of interest rate derivatives, which relates to the currency amount specified in the interest rate derivative instruments.

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