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Stock-Based Compensation (Summary Of Our Stock Options Outstanding And Exercisable) (Details) shares in Millions	12 Months Ended
	Nov. 30, 2020 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Shares | shares	4.5
Options outstanding, Weighted-average remaining life (yrs)	6 years 6 months
Options outstanding, Weighted-average exercise price (usd per share)	$ 53.56
Options exercisable, Shares | shares	3.2
Options exercisable, Weighted-average remaining life (yrs)	5 years 7 months 6 days
Options exercisable, Weighted-average exercise price (usd per share)	$ 47.76
$23.00-$37.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, lower limit	23.00
Range of exercise price, upper limit	$ 37.50
Options outstanding, Shares | shares	0.5
Options outstanding, Weighted-average remaining life (yrs)	2 years 9 months 18 days
Options outstanding, Weighted-average exercise price (usd per share)	$ 33.99
Options exercisable, Shares | shares	0.5
Options exercisable, Weighted-average remaining life (yrs)	2 years 9 months 18 days
Options exercisable, Weighted-average exercise price (usd per share)	$ 33.99
$37.51-$56.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, lower limit	37.51
Range of exercise price, upper limit	$ 56.00
Options outstanding, Shares | shares	2.7
Options outstanding, Weighted-average remaining life (yrs)	5 years 10 months 24 days
Options outstanding, Weighted-average exercise price (usd per share)	$ 48.36
Options exercisable, Shares | shares	2.5
Options exercisable, Weighted-average remaining life (yrs)	5 years 9 months 18 days
Options exercisable, Weighted-average exercise price (usd per share)	$ 47.97
$56.01-$74.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, lower limit	56.01
Range of exercise price, upper limit	$ 74.50
Options outstanding, Shares | shares	1.3
Options outstanding, Weighted-average remaining life (yrs)	8 years 10 months 24 days
Options outstanding, Weighted-average exercise price (usd per share)	$ 71.27
Options exercisable, Shares | shares	0.2
Options exercisable, Weighted-average remaining life (yrs)	8 years 3 months 18 days
Options exercisable, Weighted-average exercise price (usd per share)	$ 73.64

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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