Retirement Benefits (Schedule of estimated remaining cash contributions) (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2016 USD ($)
United States Pension Plans of US Entity, Defined Benefit [Member]
Estimated future employer contributions in the currect fiscal year	$ 0
United Kingdom Plan, Defined Benefit [Member]
Estimated future employer contributions in the currect fiscal year	323
Japan Plan, Defined Benefit [Member]
Estimated future employer contributions in the currect fiscal year	0
Other Postretirement Benefit Plans, Defined Benefit [Member]
Estimated future employer contributions in the currect fiscal year	$ 3,424