Retirement Benefits (Details 3)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
U.S. Pension Benefit Plans [Member]
Net periodic benefit cost assumptions
Discount rate	4.15%	5.20%	5.60%
Expected return on plan assets	8.00%	8.00%	8.00%
Compensation increase rate	4.00%	4.00%	4.00%
Net benefit obligation assumptions
Discount rate	5.05%	4.15%
Compensation increase rate	3.75%	4.00%
Non-U.S. Pension Benefit Plans [Member]
Net periodic benefit cost assumptions
Discount rate	3.37%	4.15%	4.14%
Expected return on plan assets	5.42%	5.93%	6.07%
Compensation increase rate	3.03%	3.03%	3.09%
Net benefit obligation assumptions
Discount rate	3.69%	3.37%
Compensation increase rate	3.11%	3.03%
U.S. Other Postretirement Benefit Plans [Member]
Net periodic benefit cost assumptions
Discount rate	3.85%	4.90%	5.10%
Net benefit obligation assumptions
Discount rate	4.60%	3.85%
Healthcare cost trend rate	7.50%	8.00%
Non-U.S. Other Postretirement Benefit Plans [Member]
Net periodic benefit cost assumptions
Discount rate	3.80%	4.10%	4.75%
Net benefit obligation assumptions
Discount rate	4.20%	3.80%
Healthcare cost trend rate	6.27%	6.68%