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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% |

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