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Financial Instruments (Narrative) (Details)
12 Months Ended 36 Months Ended
Nov. 30, 2019
USD ($)
Nov. 30, 2020
USD ($)
Nov. 30, 2020
GBP (£)
Nov. 30, 2020
EUR (€)
Nov. 30, 2018
Nov. 30, 2017
USD ($)
Derivative [Line Items]            
Long-term debt $ 3,723,500,000 $ 4,017,700,000        
Other comprehensive income (loss) expected to be reclassified in income in next 12 months   700,000        
Fair Value, Concentration of Risk, Accounts Receivable   0.10        
Derivative Asset, Fair Value, Gross Asset 27,400,000 44,500,000        
Foreign Exchange Contracts [Member]            
Derivative [Line Items]            
Investment Owned, Foreign Currency Contract, Current Value 489,200,000 383,800,000        
Foreign Exchange Contracts [Member] | Other Current Assets [Member]            
Derivative [Line Items]            
Derivative Asset, Notional Amount 293,100,000 $ 27,500,000        
Interest Rate Swap [Member]            
Derivative [Line Items]            
Interest on interest rate swap contracts         3.25% 3.25%
Derivative Instrument Basis Spread Increase On Variable Rate   1.22%        
Derivative, Notional Amount           $ 100,000,000
Interest Rate Contracts [Member] | Other Current Assets [Member]            
Derivative [Line Items]            
Derivative Asset, Notional Amount $ 350,000,000.0 $ 350,000,000.0        
Maximum [Member]            
Derivative [Line Items]            
Maturity period for remaining foreign currency contracts (in months) 18 months          
Minimum [Member]            
Derivative [Line Items]            
Maturity period for remaining foreign currency contracts (in months) 1 month          
3.25% notes due 11/15/2025(4)            
Derivative [Line Items]            
Medium-term notes due           $ 250,000,000
3.40% notes due 8/15/2027(5)            
Derivative [Line Items]            
Stated Note interest rate   3.40% 3.40% 3.40%    
3.40% notes due 8/15/2027(5) | Interest Rate Swap II [Member] | Treasury Lock [Member]            
Derivative [Line Items]            
Interest on interest rate swap contracts   3.40% 3.40% 3.40%    
Derivative, Basis Spread on Variable Rate   0.685% 0.685% 0.685%    
Derivative, Notional Amount   $ 250,000,000        
3.40% notes due 8/15/2027(5) | Interest Rate Swap [Member] | Treasury Lock [Member]            
Derivative [Line Items]            
Notes Payable   750,000,000        
Derivative, Notional Amount   $ 250,000,000        
Notes Payable, Other Payables | 3.25% notes due 11/15/2025(4)            
Derivative [Line Items]            
Stated Note interest rate   3.25% 3.25% 3.25%    
Fair Value Hedges [Member] | Foreign Exchange Contracts [Member]            
Derivative [Line Items]            
Investment Owned, Foreign Currency Contract, Current Value $ 357,500,000 $ 212,300,000        
Net Investment Hedging [Member] | Cross Currency Interest Rate Contract I [Member]            
Derivative [Line Items]            
Derivative Asset, Fair Value, Gross Asset   250,000,000        
Derivative, Collateral, Obligation to Return Cash | £     £ 194,100,000      
Derivative, Notional Amount   $ 250,000,000        
Net Investment Hedging [Member] | Cross Currency Interest Rate Contract II [Member]            
Derivative [Line Items]            
Derivative Asset, Fair Value, Gross Asset | £     194,100,000      
Derivative, Collateral, Obligation to Return Cash | €       € 221,800,000    
Derivative, Notional Amount | £     £ 194,100,000      
United States LIBOR [Member] | Net Investment Hedging [Member] | Cross Currency Interest Rate Contract I [Member]            
Derivative [Line Items]            
Derivative, Variable Interest Rate   0.685% 0.685% 0.685%    
Great Britain LIBOR [Member] | Net Investment Hedging [Member] | Cross Currency Interest Rate Contract I [Member]            
Derivative [Line Items]            
Derivative, Variable Interest Rate   0.74% 0.74% 0.74%    
Great Britain LIBOR [Member] | Net Investment Hedging [Member] | Cross Currency Interest Rate Contract II [Member]            
Derivative [Line Items]            
Derivative, Variable Interest Rate   0.74% 0.74% 0.74%    
EURIBOR [Member] | Net Investment Hedging [Member] | Cross Currency Interest Rate Contract II [Member]            
Derivative [Line Items]            
Derivative, Variable Interest Rate   0.808% 0.808% 0.808%