Financial Instruments - Fair Value of Derivative Instruments on Balance Sheet (Detail) - USD ($) $ in Millions	Feb. 28, 2018	Nov. 30, 2017	Feb. 28, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total derivative assets, Fair Value	$ 11.0	$ 12.7	$ 3.5
Total derivative liabilities, Fair Value	10.5	7.2	10.6
Interest rate contracts | Other current assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts, Fair Value	0.0	0.0	0.0
Derivative Asset, Notional Amount	0.0	0.0	0.0
Interest rate contracts | Other accrued liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts, Fair Value	5.7	2.5	2.1
Derivative Asset, Notional Amount	100.0	100.0	175.0
Foreign exchange contracts | Other current assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset, Notional Amount	307.4	326.3	111.3
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	11.0	12.7	3.5
Foreign exchange contracts | Other accrued liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	4.8	4.7	8.5
Notes subject to interest rate hedge	$ 109.7	$ 79.6	$ 284.5