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Financial Arrangements and Financial Instruments - Fair Value of Derivative Instruments on Balance Sheet (Detail) - USD ($)
$ in Millions
Aug. 31, 2020
Nov. 30, 2019
Aug. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Total derivative assets, Fair Value $ 63.7 $ 27.4 $ 44.4
Total derivative liabilities, Fair Value 40.6 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     28.2
Derivative Asset, Notional Amount   350.0 350.0
Interest rate contracts | Other accrued liabilities      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Interest rate contracts, Fair Value 0.0    
Notes subject to interest rate hedge 0.0 0.0 0.0
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 156.5 293.1 104.7
Foreign exchange contracts | Other accrued liabilities      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Notes subject to interest rate hedge 206.9 196.1 350.6
Cross currency contracts | Other accrued liabilities      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Notes subject to interest rate hedge 524.5 0.0 243.9
Cross currency contracts | Other Long-term Investments [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Derivative Asset, Notional Amount $ 0.0 495.5 236.4
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 0.0
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 $ 45.6    
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 18.1 3.3 2.2
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 21.3 3.6 4.6
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 13.4
Cross currency contracts 19.3   13.4
Fair Value, Measurements, Recurring [Member] | Cross currency contracts | Assets [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Cross currency contracts $ 0.0 $ 3.2 $ 14.0