Stock-Based Compensation (Summary Of Our Stock Options Outstanding And Exercisable) (Details) - $ / shares shares in Millions	12 Months Ended
	Nov. 30, 2015	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 4 months
Options outstanding, Weighted-average exercise price (usd per share)	$ 59.20
Options exercisable, Shares	3.1
Options exercisable, Weighted-average remaining life (yrs)	5 years
Options exercisable, Weighted-average exercise price (usd per share)	$ 51.99
$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	1.0
Options outstanding, Weighted-average remaining life (yrs)	3 years 6 months
Options outstanding, Weighted-average exercise price (usd per share)	$ 35.40
Options exercisable, Shares	1.0
Options exercisable, Weighted-average remaining life (yrs)	3 years 6 months
Options exercisable, Weighted-average exercise price (usd per share)	$ 35.40
$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	1.3
Options outstanding, Weighted-average remaining life (yrs)	5 years 9 months
Options outstanding, Weighted-average exercise price (usd per share)	$ 50.80
Options exercisable, Shares	1.2
Options exercisable, Weighted-average remaining life (yrs)	5 years 9 months
Options exercisable, Weighted-average exercise price (usd per share)	$ 50.42
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	2.5
Options outstanding, Weighted-average remaining life (yrs)	8 years 4 months
Options outstanding, Weighted-average exercise price (usd per share)	$ 72.95
Options exercisable, Shares	0.9
Options exercisable, Weighted-average remaining life (yrs)	7 years 9 months
Options exercisable, Weighted-average exercise price (usd per share)	$ 71.47