Retirement Benefits (Schedule of Allocation of Plan Assets, Actual and Target Allocations) (Details)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Other Investment Asset [Member] | United States Pension Plans of US Entity, Defined Benefit [Member]
Target Allocation, Minimum	0.00%	0.00%
Target Allocation, Maximum	0.00%	0.00%
Actual Allocation of Plan Assets	0.20%	0.20%
Other Investment Asset [Member] | United Kingdom Plan, Defined Benefit [Member]
Target Allocation, Minimum	0.00%	0.00%
Target Allocation, Maximum	0.00%	0.00%
Actual Allocation of Plan Assets	0.10%	0.00%
Other Investment Asset [Member] | Japan Plan, Defined Benefit [Member]
Target Allocation, Minimum	0.00%	0.00%
Target Allocation, Maximum	2.00%	2.00%
Actual Allocation of Plan Assets	0.90%	0.90%
Other Investment Asset [Member] | Switzerland Plan, Defined Benefit [Member]
Target Allocation, Minimum	100.00%	100.00%
Target Allocation, Maximum	100.00%	100.00%
Actual Allocation of Plan Assets	100.00%	100.00%
Equity Securities [Member] | United States Pension Plans of US Entity, Defined Benefit [Member]
Target Allocation, Minimum	40.70%	39.80%
Target Allocation, Maximum	80.70%	79.80%
Actual Allocation of Plan Assets	61.70%	60.90%
Equity Securities [Member] | United Kingdom Plan, Defined Benefit [Member]
Target Allocation, Minimum	40.00%	30.00%
Target Allocation, Maximum	70.00%	50.00%
Actual Allocation of Plan Assets	48.40%	39.40%
Equity Securities [Member] | Japan Plan, Defined Benefit [Member]
Target Allocation, Minimum	36.00%	36.00%
Target Allocation, Maximum	44.00%	44.00%
Actual Allocation of Plan Assets	41.30%	40.50%
Equity Securities [Member] | Switzerland Plan, Defined Benefit [Member]
Target Allocation, Minimum	0.00%	0.00%
Target Allocation, Maximum	0.00%	0.00%
Actual Allocation of Plan Assets	0.00%	0.00%
Debt Securities [Member] | United States Pension Plans of US Entity, Defined Benefit [Member]
Target Allocation, Minimum	29.30%	30.20%
Target Allocation, Maximum	49.30%	50.20%
Actual Allocation of Plan Assets	38.10%	38.90%
Debt Securities [Member] | United Kingdom Plan, Defined Benefit [Member]
Target Allocation, Minimum	35.00%	45.00%
Target Allocation, Maximum	65.00%	75.00%
Actual Allocation of Plan Assets	51.50%	60.60%
Debt Securities [Member] | Japan Plan, Defined Benefit [Member]
Target Allocation, Minimum	55.00%	55.00%
Target Allocation, Maximum	63.00%	63.00%
Actual Allocation of Plan Assets	57.80%	58.60%
Debt Securities [Member] | Switzerland Plan, Defined Benefit [Member]
Target Allocation, Minimum	0.00%	0.00%
Target Allocation, Maximum	0.00%	0.00%
Actual Allocation of Plan Assets	0.00%	0.00%