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 |
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 | 350 |
Interest rate contracts | Other accrued liabilities | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Interest rate contracts, Fair Value | 0 | | |
Notes subject to interest rate hedge | 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 | | |
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 | 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 | 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 | | |
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 | | |
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 |
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 | 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 | $ 3.2 | $ 14 |