Stock-Based Compensation (Summary Of Our Stock Options Outstanding And Exercisable) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Nov. 30, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Shares	4.8
Options outstanding, Weighted-average remaining life (yrs)	6 years 6 months 1 day
Options outstanding, Weighted-average exercise price (usd per share)	$ 54.17
Options exercisable, Shares	2.8
Options exercisable, Weighted-average remaining life (yrs)	5 years 1 month 6 days
Options exercisable, Weighted-average exercise price (usd per share)	$ 45.71
$20.00-$40.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, lower limit	$ 20.00
Range of exercise price, upper limit	$ 40.00
Options outstanding, Shares	1.4
Options outstanding, Weighted-average remaining life (yrs)	3 years 10 months 25 days
Options outstanding, Weighted-average exercise price (usd per share)	$ 35.71
Options exercisable, Shares	1.4
Options exercisable, Weighted-average remaining life (yrs)	3 years 10 months 25 days
Options exercisable, Weighted-average exercise price (usd per share)	$ 35.71
$40.01-$60.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, lower limit	$ 40.01
Range of exercise price, upper limit	$ 60.00
Options outstanding, Shares	1.5
Options outstanding, Weighted-average remaining life (yrs)	6 years 9 months 20 days
Options outstanding, Weighted-average exercise price (usd per share)	$ 50.77
Options exercisable, Shares	1.0
Options exercisable, Weighted-average remaining life (yrs)	6 years 8 months 15 days
Options exercisable, Weighted-average exercise price (usd per share)	$ 50.24
Range Three Of Exercise Price [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, lower limit	$ 60.01
Range of exercise price, upper limit	$ 80.00
Options outstanding, Shares	1.9
Options outstanding, Weighted-average remaining life (yrs)	8 years 10 months 25 days
Options outstanding, Weighted-average exercise price (usd per share)	$ 71.33
Options exercisable, Shares	0.4
Options exercisable, Weighted-average remaining life (yrs)	8 years 6 months
Options exercisable, Weighted-average exercise price (usd per share)	$ 71.48