Pension and Other Postretirement Benefit Plans (Plan assets) (Details) - Foreign Plan [Member]	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Expected future long-term rate of return on plan assets, percent	3.00%	3.75%
Swiss bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocation, percentage	14.00%
Historical asset rates of return (percentage)	0.21%	0.76%
Non-Swiss hedged bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocation, percentage	10.00%
Swiss equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocation, percentage	10.00%
Historical asset rates of return (percentage)	3.52%	4.10%
Global equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocation, percentage	15.00%
Hedged Foreign Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Historical asset rates of return (percentage)	0.00%	1.04%
Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocation, percentage	40.00%
Historical asset rates of return (percentage)	2.54%	3.69%
Unhedged Global Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Historical asset rates of return (percentage)	5.21%	5.45%
Emerging Market Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocation, percentage	5.00%
Historical asset rates of return (percentage)	5.21%	5.31%
Alernative investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocation, percentage	4.00%
Historical asset rates of return (percentage)	1.23%	2.33%
Cash and other short-term investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocation, percentage	2.00%
Historical asset rates of return (percentage)	0.23%	1.32%