Selected Quarterly Data (Scheduled Of Quarterly Financial Information) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Nov. 30, 2015	Aug. 31, 2015	May. 31, 2015	Feb. 28, 2015	Nov. 30, 2014	Aug. 31, 2014	May. 31, 2014	Feb. 28, 2014	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Selected Quarterly Data [Line Items]
Net sales	$ 1,201.9	$ 1,059.9	$ 1,024.1	$ 1,010.4	$ 1,173.6	$ 1,042.8	$ 1,033.4	$ 993.4	$ 4,296.3	$ 4,243.2	$ 4,123.4
Gross profit	521.7	421.9	404.0	389.7	506.1	420.1	412.5	391.5	1,737.3	1,730.2	1,665.8
Operating income	212.2	138.7	103.8	93.7	199.4	157.3	121.7	124.6	548.4	603.0	550.5
Net income	$ 149.2	$ 97.6	$ 84.3	$ 70.5	$ 148.0	$ 122.9	$ 84.5	$ 82.5	$ 401.6	$ 437.9	$ 389.0
Basic earnings per share	$ 1.17	$ 0.76	$ 0.66	$ 0.55	$ 1.15	$ 0.95	$ 0.65	$ 0.63	$ 3.14	$ 3.37	$ 2.94
Diluted earnings per share	1.16	0.76	0.65	0.55	1.14	0.94	0.64	0.62	3.11	3.34	2.91
Dividends paid per share (usd per share)	0.40	0.40	0.40	0.40	0.37	0.37	0.37	0.37	1.60	1.48	1.36
Common Stock, Dividends, Per Share, Declared	$ 0.83	$ 0.40	$ 0.40	$ 0.00	$ 0.77	$ 0.37	0.37	0.00	$ 1.63	$ 1.51	$ 1.39
Special charges	$ 3.0	$ 15.1	$ 19.0	$ 28.4	$ 2.9	$ 2.3			$ 61.5	$ 5.2	$ 25.0
Gross profit impact of special charges	0.6	3.4
Loss on voluntary pension settlement									$ 0.0	$ 0.0	$ 15.3
After tax impact of special charges and loss on voluntary pension settlement	$ 3.0	$ 12.1	$ 12.9	$ 19.9	$ 2.1	$ 1.6
EPS impact of Special charges - Basic				$ 0.16
EPS impact of Special charges - Diluted	$ 0.02	$ 0.09	$ 0.10	0.15
EPS impact of Special charges and loss on voluntary pension settlement					$ 0.02	$ 0.01
Common Stock [Member]
Selected Quarterly Data [Line Items]
Common Stock, Market price, High	86.04	84.89	79.53	76.37	73.18	73.04	72.00	70.00
Common Stock, Market price, Low	77.70	76.13	68.29	71.45	65.90	66.00	65.57	62.80
Common Stock Non-Voting [Member]
Selected Quarterly Data [Line Items]
Common Stock, Market price, High	86.03	85.20	79.61	76.78	74.33	73.09	72.31	70.02
Common Stock, Market price, Low	$ 77.61	$ 76.02	$ 71.98	$ 71.39	$ 65.61	$ 65.78	$ 66.12	$ 63.03