Condensed Consolidated Statement of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Sales
Products and solutions	$ 1,429.1	$ 1,363.5	$ 2,851.4	$ 2,697.7
Services	171.4	159.3	340.8	314.3
Total sales	1,600.5	1,522.8	3,192.2	3,012.0
Cost of sales
Products and solutions	(825.1)	(794.2)	(1,635.5)	(1,569.0)
Services	(119.6)	(112.2)	(237.2)	(219.3)
Total cost of sales	(944.7)	(906.4)	(1,872.7)	(1,788.3)
Gross profit	655.8	616.4	1,319.5	1,223.7
Selling, general and administrative expenses	(392.5)	(376.8)	(777.9)	(750.3)
Other income	0.1	2.8	9.5	1.6
Interest expense	(15.0)	(15.3)	(29.9)	(30.7)
Income before income taxes	248.4	227.1	521.2	444.3
Income tax provision	(68.1)	(51.2)	(142.8)	(107.0)
Net income	$ 180.3	$ 175.9	$ 378.4	$ 337.3
Earnings Per Share, Basic [Abstract]
Basic	$ 1.30	$ 1.25	$ 2.73	$ 2.41
Earnings Per Share, Diluted [Abstract]
Diluted	$ 1.28	$ 1.24	$ 2.70	$ 2.38
Cash dividends per share	$ 0.58	$ 0.47	$ 1.16	$ 0.94
Weighted average outstanding shares:
Basic	138.5	140.0	138.5	139.6
Diluted	140.2	141.8	140.2	141.4