Pension Benefit Obligations (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended
	Jun. 30, 2013	Sep. 30, 2012	Jun. 30, 2013 U.S.	Jun. 30, 2012 U.S.	Jun. 30, 2013 U.S.	Jun. 30, 2012 U.S.	Sep. 30, 2013 U.S.	Jun. 30, 2013 Int'l	Jun. 30, 2012 Int'l	Jun. 30, 2013 Int'l	Jun. 30, 2012 Int'l	Sep. 30, 2013 Int'l
Components of net periodic (benefit) cost:
Service costs								$ 0.2	$ 0.2	$ 0.7	$ 0.8
Interest cost on projected benefit obligation			1.7	1.9	5.0	5.8		5.9	6.4	18.0	19.2
Expected return on plan assets			(2.1)	(2.1)	(6.4)	(6.3)		(5.6)	(6.3)	(17.1)	(19.0)
Amortization of prior service costs										(0.1)	(0.1)
Amortization of net loss			1.0	0.8	3.2	2.3		0.9	0.6	2.9	1.7
Settlement loss recognized										2.6	0.5
Net periodic (benefit) cost			0.6	0.6	1.8	1.8		1.4	0.9	7.0	3.1
Employer contributions					5.7					12.3
Expected remaining scheduled annual employer contributions for the current fiscal year							1.0					4.7
Net pension liabilities included in other long-term liabilities	$ 175.2	$ 192.2