Selected Quarterly Data (Scheduled Of Quarterly Financial Information) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Nov. 30, 2013	Aug. 31, 2013	May 31, 2013	Feb. 28, 2013	Nov. 30, 2012	Aug. 31, 2012	May 31, 2012	Feb. 29, 2012	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011
Selected Quarterly Data [Line Items]
Net sales	$ 1,170.1	$ 1,016.4	$ 1,002.6	$ 934.4	$ 1,145.8	$ 977.7	$ 984.0	$ 906.7	$ 4,123.4	$ 4,014.2	$ 3,697.6
Gross profit	502.2	407.6	394.4	361.7	482.4	391.7	388.4	355.3	1,665.8	1,617.8	1,522.5
Operating income	174.1	148.4	116.0	112.0	200.2	144.2	121.3	112.5	550.5	578.3	540.3
Net income	129.9	104.4	78.6	76.0	148.5	104.4	80.4	74.5	389.0	407.8	374.2
Basic earnings per share	$ 0.99	$ 0.79	$ 0.60	$ 0.57	$ 1.12	$ 0.79	$ 0.61	$ 0.56	$ 2.94	$ 3.07	$ 2.82
Diluted earnings per share	$ 0.98	$ 0.78	$ 0.59	$ 0.57	$ 1.11	$ 0.78	$ 0.60	$ 0.55	$ 2.91	$ 3.04	$ 2.79
Dividends paid per share (usd per share)	$ 0.34	$ 0.34	$ 0.34	$ 0.34	$ 0.31	$ 0.31	$ 0.31	$ 0.31	$ 1.36	$ 1.24	$ 1.12
Special charges									25.0	0	0
Loss on voluntary pension settlement									15.3	0	0
After tax impact of special charges and loss on voluntary pension settlement									$ 29.2
EPS impact of Special charges and loss on voluntary pension settlement									$ 0.22
Common Stock [Member]
Selected Quarterly Data [Line Items]
Common Stock, Market price, High	$ 70.00	$ 73.41	$ 74.60	$ 67.28	$ 66.00	$ 61.45	$ 57.26	$ 51.91
Common Stock, Market price, Low	$ 63.29	$ 66.85	$ 68.08	$ 61.03	$ 61.01	$ 55.08	$ 50.57	$ 48.52
Common Stock Non-Voting [Member]
Selected Quarterly Data [Line Items]
Common Stock, Market price, High	$ 70.20	$ 73.36	$ 74.76	$ 67.32	$ 66.37	$ 61.89	$ 57.40	$ 52.07
Common Stock, Market price, Low	$ 64.07	$ 67.09	$ 68.39	$ 61.23	$ 61.20	$ 55.18	$ 50.43	$ 48.54