Quarterly Financial Data (Unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Quarterly Financial Data (Unaudited)
Net sales	$ 724.0	$ 796.8	$ 792.6	$ 629.6	$ 683.6	$ 745.0	$ 773.2	$ 649.4	$ 2,943.0		$ 2,851.2		$ 2,492.4
Gross profit	185.8	200.3	207.1	152.4	181.1	200.6	216.5	168.8	745.6		767.0
Other expenses	93.4	90.7	97.7	97.0	108.6	97.5	95.6	93.7	378.8		395.1
Earnings before interest and income taxes	92.4	109.6	109.4	55.4	72.5	103.1	121.0	75.3	366.8		371.9		266.0
Income from continuing operations, net of tax	60.2	66.4	64.3	44.3	44.0	64.4	76.1	44.2	235.2		228.7		172.0
Basic earnings per share from continuing operations (in dollars per share)	$ 0.94	$ 1.04	$ 1.01	$ 0.70	$ 0.69	$ 1.02	$ 1.21	$ 0.71	$ 3.69	[1]	$ 3.64	[1]	$ 2.77	[1]
Diluted earnings per share from continuing operations (in dollars per share)	$ 0.92	$ 1.02	$ 0.99	$ 0.68	$ 0.68	$ 1.00	$ 1.19	$ 0.69	$ 3.61	[1]	$ 3.57	[1]	$ 2.73	[1]
Income (loss) from discontinued operations, net of tax	9.5	10.2	(56.2)	11.0	3.9	5.1	16.7	15.8	(25.5)		41.5		8.3
Basic income per share from discontinued operations (in dollars per share)	$ 0.15	$ 0.16	$ (0.88)	$ 0.17	$ 0.06	$ 0.08	$ 0.27	$ 0.25	$ (0.40)	[1]	$ 0.66	[1]	$ 0.14	[1]
Diluted income per share from discontinued operations (in dollars per share)	$ 0.15	$ 0.15	$ (0.86)	$ 0.17	$ 0.06	$ 0.08	$ 0.26	$ 0.25	$ (0.39)	[1]	$ 0.65	[1]	$ 0.13	[1]
Net income	$ 69.7	$ 76.6	$ 8.1	$ 55.3	$ 47.9	$ 69.5	$ 92.8	$ 60.0	$ 209.7		$ 270.2
Basic Earnings per share (in dollars per share)	$ 1.09	$ 1.20	$ 0.13	$ 0.87	$ 0.75	$ 1.10	$ 1.48	$ 0.96	$ 3.29	[1]	$ 4.30	[1]	$ 2.91	[1]
Diluted earnings per share (in dollars per share)	$ 1.07	$ 1.17	$ 0.13	$ 0.85	$ 0.74	$ 1.08	$ 1.45	$ 0.94	$ 3.22	[1]	$ 4.22	[1]	$ 2.86	[1]
Dividends earnings per share (in dollars per share)	$ 0.22	$ 0.22	$ 0.20	$ 0.20	$ 0.20	$ 0.20	$ 0.18	$ 0.18	$ 0.84		$ 0.76		$ 0.70
Stock price:
High (in dollars per share)	$ 80.21	$ 70.48	$ 68.12	$ 70.55	$ 59.36	$ 55.19	$ 56.03	$ 51.16
Low (in dollars per share)	$ 67.98	$ 62.00	$ 60.34	$ 59.19	$ 51.10	$ 48.25	$ 48.69	$ 45.56

[1] Earning per share calculated based on the two-class method. See Note 8 for detailed calculations.