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Financial Instruments (Fair Values Of Derivative Instruments) (Details) - USD ($) $ in Millions	Nov. 30, 2021	Nov. 30, 2020	Apr. 30, 2020	Nov. 30, 2019
Derivatives, Fair Value [Line Items]
Fair Value of Interest rate contracts	$ 21.2	$ 41.3
Fair Value of Asset Derivatives	35.8	44.5
Fair Value of Liability Derivatives	10.8	27.0
Stated Note interest rate			2.50%
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fixed Interest Rate				3.25%
Foreign Exchange Contracts [Member] \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	380.8	27.5
Foreign Exchange Contracts [Member] \| Other Current Assets [Member] \| Fair Value, Measurements, Recurring [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	8.3	1.4
Foreign Exchange Contracts [Member] \| Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Total notional amount of interest rate swap contracts	202.8	356.3
Foreign Exchange Contracts [Member] \| Other Accrued Liabilities [Member] \| Fair Value, Measurements, Recurring [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	2.8	8.2
Cross Currency Interest Rate Contract \| Other Long-term Investments [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	251.0	0.0
Cross Currency Interest Rate Contract \| Assets [Member] \| Fair Value, Measurements, Recurring [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	4.4	0.0
Cross Currency Interest Rate Contract \| Liability [Member] \| Fair Value, Measurements, Recurring [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	8.0	18.8
Cross Currency Interest Rate Contract \| Other Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total notional amount of interest rate swap contracts	257.5	524.4
Interest Rate Contracts [Member] \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	350.0	350.0
Fair Value of Interest rate contracts		43.1
Interest Rate Contracts [Member] \| Other Current Assets [Member] \| Fair Value, Measurements, Recurring [Member]
Derivatives, Fair Value [Line Items]
Fair Value of Interest rate contracts	23.1	43.1
Interest Rate Contracts [Member] \| Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Total notional amount of interest rate swap contracts	0.0	0.0
Interest rate derivatives	$ 0.0	$ 0.0