Retirement Benefits (Schedule of Allocation of Plan Assets, Actual and Target Allocations) (Details)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
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%	0.10%
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%
Target Allocation, Maximum		100.00%
Actual Allocation of Plan Assets		100.00%
Equity Securities [Member] | United States Pension Plans of US Entity, Defined Benefit [Member]
Target Allocation, Minimum	40.70%	40.70%
Target Allocation, Maximum	80.70%	80.70%
Actual Allocation of Plan Assets	60.00%	61.70%
Equity Securities [Member] | United Kingdom Plan, Defined Benefit [Member]
Target Allocation, Minimum	40.00%	40.00%
Target Allocation, Maximum	70.00%	70.00%
Actual Allocation of Plan Assets	48.20%	48.40%
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	40.70%	41.30%
Equity Securities [Member] | Switzerland Plan, Defined Benefit [Member]
Target Allocation, Minimum		0.00%
Target Allocation, Maximum		0.00%
Actual Allocation of Plan Assets		0.00%
Debt Securities [Member] | United States Pension Plans of US Entity, Defined Benefit [Member]
Target Allocation, Minimum	29.30%	29.30%
Target Allocation, Maximum	49.30%	49.30%
Actual Allocation of Plan Assets	39.80%	38.10%
Debt Securities [Member] | United Kingdom Plan, Defined Benefit [Member]
Target Allocation, Minimum	35.00%	35.00%
Target Allocation, Maximum	65.00%	65.00%
Actual Allocation of Plan Assets	51.70%	51.50%
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	58.40%	57.80%
Debt Securities [Member] | Switzerland Plan, Defined Benefit [Member]
Target Allocation, Minimum		0.00%
Target Allocation, Maximum		0.00%
Actual Allocation of Plan Assets		0.00%