Business Segment Information (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Sales and property by geographic region
Sales	$ 1,781.8	$ 1,649.5	$ 1,600.5	$ 1,591.7	$ 1,715.7	$ 1,624.2	$ 1,522.8	$ 1,489.2	$ 6,623.5	$ 6,351.9	$ 6,259.4
Property	632.9				616.0				632.9	616.0	587.1
United States [Member]
Sales and property by geographic region
Sales									3,414.6	3,202.9	3,067.3
Property	497.5				484.7				497.5	484.7	458.8
Canada [Member]
Sales and property by geographic region
Sales									437.0	468.7	464.3
Property	7.6				7.6				7.6	7.6	8.6
Europe, Middle East and Africa [Member]
Sales and property by geographic region
Sales									1,351.8	1,284.9	1,280.6
Property	48.8				43.0				48.8	43.0	41.6
Asia Pacific [Member]
Sales and property by geographic region
Sales									884.0	851.9	942.4
Property	37.3				39.1				37.3	39.1	39.4
Latin America [Member]
Sales and property by geographic region
Sales									536.1	543.5	504.8
Property	$ 41.7				$ 41.6				$ 41.7	$ 41.6	$ 38.7