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, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Shares	4.6
Options outstanding, Weighted-average remaining life (yrs)	6 years 2 months 12 days
Options outstanding, Weighted-average exercise price (usd per share)	$ 47.73
Options exercisable, Shares	2.7
Options exercisable, Weighted-average remaining life (yrs)	4 years 7 months 6 days
Options exercisable, Weighted-average exercise price (usd per share)	$ 39.62
$29.60-$40.10 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, lower limit	$ 29.60
Range of exercise price, upper limit	$ 40.10
Options outstanding, Shares	2.1
Options outstanding, Weighted-average remaining life (yrs)	4 years
Options outstanding, Weighted-average exercise price (usd per share)	$ 35.48
Options exercisable, Shares	2.0
Options exercisable, Weighted-average remaining life (yrs)	3 years 8 months 12 days
Options exercisable, Weighted-average exercise price (usd per share)	$ 35.18
$40.11-$50.60 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, lower limit	$ 40.11
Range of exercise price, upper limit	$ 50.60
Options outstanding, Shares	0.8
Options outstanding, Weighted-average remaining life (yrs)	7 years 3 months 18 days
Options outstanding, Weighted-average exercise price (usd per share)	$ 47.40
Options exercisable, Shares	0.4
Options exercisable, Weighted-average remaining life (yrs)	7 years 3 months 18 days
Options exercisable, Weighted-average exercise price (usd per share)	$ 47.40
$50.61-$61.10 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, lower limit	$ 50.61
Range of exercise price, upper limit	$ 61.10
Options outstanding, Shares	0.8
Options outstanding, Weighted-average remaining life (yrs)	8 years 3 months 18 days
Options outstanding, Weighted-average exercise price (usd per share)	$ 54.24
Options exercisable, 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)	$ 54.24
$61.11-$71.60 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, lower limit	$ 61.11
Range of exercise price, upper limit	$ 71.60
Options outstanding, Shares	0.9
Options outstanding, Weighted-average remaining life (yrs)	9 years 3 months 18 days
Options outstanding, Weighted-average exercise price (usd per share)	$ 71.58
Options exercisable, Shares	0.1
Options exercisable, Weighted-average remaining life (yrs)	9 years 3 months 18 days
Options exercisable, Weighted-average exercise price (usd per share)	$ 71.25