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Stock-Based Compensation (Summary Of Our Stock Options Outstanding And Exercisable) (Details)
shares in Millions
12 Months Ended
Nov. 30, 2019
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options outstanding, Shares | shares 2.6
Options outstanding, Weighted-average remaining life (yrs) 6 years 6 months
Options outstanding, Weighted-average exercise price (usd per share) $ 96.18
Options exercisable, Shares | shares 1.9
Options exercisable, Weighted-average remaining life (yrs) 5 years 8 months 12 days
Options exercisable, Weighted-average exercise price (usd per share) $ 86.61
$38.00-$79.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of exercise price, lower limit 38.00
Range of exercise price, upper limit $ 79.00
Options outstanding, Shares | shares 0.9
Options outstanding, Weighted-average remaining life (yrs) 4 years 4 months 24 days
Options outstanding, Weighted-average exercise price (usd per share) $ 71.40
Options exercisable, Shares | shares 0.9
Options exercisable, Weighted-average remaining life (yrs) 4 years 4 months 24 days
Options exercisable, Weighted-average exercise price (usd per share) $ 71.40
$79.01-$103.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of exercise price, lower limit 79.01
Range of exercise price, upper limit $ 103.00
Options outstanding, Shares | shares 1.0
Options outstanding, Weighted-average remaining life (yrs) 6 years 9 months 18 days
Options outstanding, Weighted-average exercise price (usd per share) $ 99.04
Options exercisable, Shares | shares 0.9
Options exercisable, Weighted-average remaining life (yrs) 6 years 8 months 12 days
Options exercisable, Weighted-average exercise price (usd per share) $ 99.22
$103.01-$149.00 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of exercise price, lower limit 103.01
Range of exercise price, upper limit $ 149.00
Options outstanding, Shares | shares 0.7
Options outstanding, Weighted-average remaining life (yrs) 8 years 9 months 18 days
Options outstanding, Weighted-average exercise price (usd per share) $ 125.75
Options exercisable, Shares | shares 0.1
Options exercisable, Weighted-average remaining life (yrs) 8 years 3 months 18 days
Options exercisable, Weighted-average exercise price (usd per share) $ 106.65