Business Segment Information (Details 2) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Sales and property by geographic region
Sales	$ 1,607.5	$ 1,575.2	$ 1,550.8	$ 1,574.4	$ 1,781.8	$ 1,649.5	$ 1,600.5	$ 1,591.7	$ 6,307.9	$ 6,623.5	$ 6,351.9
Property	605.6				632.9				605.6	632.9	616.0
United States [Member]
Sales and property by geographic region
Sales									3,446.8	3,414.6	3,202.9
Property	472.1				497.5				472.1	497.5	484.7
Canada [Member]
Sales and property by geographic region
Sales									366.6	437.0	468.7
Property	7.3				7.6				7.3	7.6	7.6
Europe, Middle East and Africa [Member]
Sales and property by geographic region
Sales									1,174.0	1,351.8	1,284.9
Property	50.4				48.8				50.4	48.8	43.0
Asia Pacific [Member]
Sales and property by geographic region
Sales									834.5	884.0	851.9
Property	41.9				37.3				41.9	37.3	39.1
Latin America [Member]
Sales and property by geographic region
Sales									486.0	536.1	543.5
Property	$ 33.9				$ 41.7				$ 33.9	$ 41.7	$ 41.6