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Financial Arrangements and Financial Instruments - Fair Value of Derivative Instruments on Balance Sheet (Detail) - USD ($) $ in Millions	Feb. 29, 2020	Nov. 30, 2019	Feb. 28, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total derivative assets, Fair Value	$ 42.4	$ 27.4	$ 3.3
Total derivative liabilities, Fair Value	8.6	3.6	18.0
Interest rate contracts \| Other current assets / Other long-term assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts, Fair Value			0.1
Derivative Asset, Notional Amount		350.0	250.0
Interest rate contracts \| Other accrued liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts, Fair Value	0.0
Derivative Asset, Notional Amount	0.0	0.0	100.0
Interest rate contracts \| Other Long-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts, Fair Value		20.9
Derivative Asset, Notional Amount	350.0
Foreign exchange contracts \| Other current assets / Other long-term assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset, Notional Amount	244.1	293.1	343.0
Foreign exchange contracts \| Other accrued liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes subject to interest rate hedge	273.0	196.1	204.8
Cross currency contracts \| Other accrued liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes subject to interest rate hedge	243.9	0.0	509.8
Cross currency contracts \| Other Long-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset, Notional Amount	$ 247.3	495.5
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, 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]
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]
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, Fixed Interest Rate	3.40%
Fair Value, Measurements, Recurring [Member] \| Interest rate contracts \| Other accrued liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts, Fair Value		0.0	4.0
Fair Value, Measurements, Recurring [Member] \| Interest rate contracts \| Other Long-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate contracts, Fair Value	$ 34.2
Fair Value, Measurements, Recurring [Member] \| Foreign exchange contracts \| Other current assets / Other long-term assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	5.6	3.3	3.2
Fair Value, Measurements, Recurring [Member] \| 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	$ 7.6	3.6	4.8
Fair Value, Measurements, Recurring [Member] \| Cross currency contracts \| Liability [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net		$ 0.0	$ 9.2