Business Segment Information (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Sales and property by geographic region
Sales	$ 1,715.7	$ 1,624.2	$ 1,522.8	$ 1,489.2	$ 1,664.0	$ 1,560.4	$ 1,561.1	$ 1,473.9	$ 6,351.9	$ 6,259.4	$ 6,000.4
Property	616.0				587.1				616.0	587.1	561.4
United States [Member]
Sales and property by geographic region
Sales									3,202.9	3,067.3	2,917.8
Property	484.7				458.8				484.7	458.8	446.1
Canada [Member]
Sales and property by geographic region
Sales									468.7	464.3	396.2
Property	7.6				8.6				7.6	8.6	9.2
Europe, Middle East and Africa [Member]
Sales and property by geographic region
Sales									1,284.9	1,280.6	1,267.6
Property	43.0				41.6				43.0	41.6	42.6
Asia Pacific [Member]
Sales and property by geographic region
Sales									851.9	942.4	910.6
Property	39.1				39.4				39.1	39.4	36.8
Latin America [Member]
Sales and property by geographic region
Sales									543.5	504.8	508.2
Property	$ 41.6				$ 38.7				$ 41.6	$ 38.7	$ 26.7