Financial Instruments - Fair Value of Derivative Instruments on Balance Sheet (Detail) - USD ($) $ in Millions	Feb. 28, 2019	Nov. 30, 2018	Feb. 28, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total derivative assets, Fair Value	$ 3.3	$ 4.4	$ 11.0
Total derivative liabilities, Fair Value	18.0	12.8	10.5
Interest rate contracts | Other current assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts, Fair Value	0.1	0.0	0.0
Derivative Asset, Notional Amount	250.0	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	4.0	6.4	5.7
Derivative Asset, Notional Amount	100.0	100.0	100.0
Foreign exchange contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment Foreign Currency, Contract, Foreign Currency Amount	547.8
Foreign exchange contracts | Other current assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset, Notional Amount	343.0	199.5	307.4
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	3.2	4.4	11.0
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	6.4	4.8
Notes subject to interest rate hedge	204.8	$ 295.4	$ 109.7
Cross currency contracts | Other accrued liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	9.2
Notes subject to interest rate hedge	509.8
Interest Rate Swap | Treasury Lock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative, Notional Amount	$ 350.0
Three Point Two Five Zero Notes Due On Two Thousand Twenty Five [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated Note interest rate	3.25%
Three Point Two Five Zero Notes Due On Two Thousand Twenty Five [Member] | Interest Rate Swap | Treasury Lock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative, Basis Spread on Variable Rate	1.22%
Derivative, Notional Amount	$ 100.0
Derivative, Fixed Interest Rate	3.25%
Three Point Two Five Zero Notes Due On Two Thousand Twenty Five [Member] | Interest Rate Swap 3.25% | Treasury Lock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative, Notional Amount	$ 100.0
Notes Payable	$ 250.0
Three Point Four Zero Notes Due Two Thousand Twenty Seven [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated Note interest rate	3.40%
Three Point Four Zero Notes Due Two Thousand Twenty Seven [Member] | Interest Rate Swap | Treasury Lock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative, Notional Amount	$ 250.0
Notes Payable	$ 750.0
Three Point Four Zero Notes Due Two Thousand Twenty Seven [Member] | Interest Rate Swap 3.40% | Treasury Lock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative, Basis Spread on Variable Rate	0.685%
Derivative, Notional Amount	$ 250.0
Derivative, Fixed Interest Rate	3.40%