Retirement Benefit Plans - Benefit Obligation Assumptions (Details)	Dec. 31, 2015	Dec. 31, 2014
U.S. Plans [Member]
Assumptions
Discount rate	4.69%	4.20%
U.S. Plans [Member] | Minimum [Member]
Assumptions
Future compensation assumption	2.00%	2.00%
U.S. Plans [Member] | Maximum [Member]
Assumptions
Future compensation assumption	3.00%	3.00%
International Plans [Member] | Minimum [Member]
Assumptions
Discount rate	2.00%	1.50%
Future compensation assumption	2.20%	2.20%
International Plans [Member] | Maximum [Member]
Assumptions
Discount rate	8.50%	8.75%
Future compensation assumption	8.00%	8.00%