Retirement Benefits (Details 3)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
U.S. Pension Benefit Plans [Member]
Net periodic benefit cost assumptions
Discount rate	5.05%	4.15%	5.20%
Expected return on plan assets	7.50%	8.00%	8.00%
Compensation increase rate	3.75%	4.00%	4.00%
Net benefit obligation assumptions
Discount rate	4.50%	5.05%
Compensation increase rate	3.75%	3.75%
Non-U.S. Pension Benefit Plans [Member]
Net periodic benefit cost assumptions
Discount rate	3.69%	3.37%	4.15%
Expected return on plan assets	5.33%	5.42%	5.93%
Compensation increase rate	3.11%	3.03%	3.03%
Net benefit obligation assumptions
Discount rate	3.01%	3.69%
Compensation increase rate	3.16%	3.11%
U.S. Other Postretirement Benefit Plans [Member]
Net periodic benefit cost assumptions
Discount rate	4.60%	3.85%	4.90%
Net benefit obligation assumptions
Discount rate	3.65%	4.60%
Healthcare cost trend rate	7.00%	7.50%
Non-U.S. Other Postretirement Benefit Plans [Member]
Net periodic benefit cost assumptions
Discount rate	4.20%	3.80%	4.10%
Net benefit obligation assumptions
Discount rate	3.50%	4.20%
Healthcare cost trend rate	5.83%	6.27%