Financial Instruments (Narrative) (Details)	1 Months Ended	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2019 USD ($)	Nov. 30, 2018 USD ($)	Nov. 30, 2017 USD ($)	Nov. 30, 2019 EUR (€)	Nov. 30, 2019 GBP (£)	Nov. 30, 2016 USD ($)
Derivative [Line Items]
Long-term debt		$ 3,723,500,000	$ 4,136,400,000
Increase (Decrease) in Financial Instruments Used in Operating Activities		0	0	$ 2,900,000
Other comprehensive income (loss) expected to be reclassified in income in next 12 months		200,000
Fair Value, Concentration of Risk, Accounts Receivable		0.10
Derivative Asset, Fair Value, Gross Asset		27,400,000	4,400,000
Foreign Exchange Contracts [Member]
Derivative [Line Items]
Foreign currency to purchase or sell		$ 489,200,000	$ 494,900,000
Maximum time frame for short-term foreign exchange contracts		12 months
Derivative, Notional Amount		$ 151,300,000
Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount							$ 100,000,000
Interest on interest rate swap contracts				3.25%			3.25%
Derivative Instrument Basis Spread Increase On Variable Rate	1.22%
Maximum [Member]
Derivative [Line Items]
Maturity period for remaining foreign currency contracts (in months)			12 months
Minimum [Member]
Derivative [Line Items]
Maturity period for remaining foreign currency contracts (in months)			1 month
3.25% Notes Due 2025 [Member]
Derivative [Line Items]
Medium-term notes due							$ 250,000,000
Three Point Four Zero Notes Due Two Thousand Twenty Seven [Member]
Derivative [Line Items]
Stated Note interest rate		3.40%			3.40%	3.40%
Three Point Four Zero Notes Due Two Thousand Twenty Seven [Member] | Interest Rate Swap II [Member] | Treasury Lock [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 250,000,000
Interest on interest rate swap contracts		3.40%			3.40%	3.40%
Derivative, Basis Spread on Variable Rate		0.685%			0.685%	0.685%
Three Point Four Zero Notes Due Two Thousand Twenty Seven [Member] | Interest Rate Swap [Member] | Treasury Lock [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 250,000,000
Notes Payable		$ 750,000,000
Notes Payable, Other Payables [Member] | 3.25% Notes Due 2025 [Member]
Derivative [Line Items]
Stated Note interest rate		3.25%			3.25%	3.25%
Fair Value Hedges [Member] | Foreign Exchange Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 357,500,000	$ 402,000,000.0
Fair Value Hedges [Member] | Other Income [Member] | Foreign Exchange Contracts [Member]
Derivative [Line Items]
Foreign Currency Transaction Gain (Loss), Realized		(200,000)	2,900,000	$ (12,800,000)
Fair Value Hedges [Member] | Other Income [Member] | Loans Payable [Member]
Derivative [Line Items]
Foreign Currency Transaction Gain (Loss), Realized		900,000	(2,700,000)	$ 14,100,000
Net Investment Hedging [Member] | Cross Currency Interest Rate Contract I [Member]
Derivative [Line Items]
Derivative, Notional Amount		250,000,000
Derivative Asset, Fair Value, Gross Asset		250,000,000
Derivative, Collateral, Obligation to Return Cash | £						£ 194,100,000
Net Investment Hedging [Member] | Cross Currency Interest Rate Contract II [Member]
Derivative [Line Items]
Derivative, Notional Amount | £						194,100,000
Derivative Asset, Fair Value, Gross Asset | £						£ 194,100,000
Derivative, Collateral, Obligation to Return Cash | €					€ 221,800,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative [Line Items]
Long-term debt		3,437,500,000	3,172,700,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative [Line Items]
Long-term debt		$ 421,500,000	$ 866,700,000
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%