Income Taxes (Reconciliation of Income Tax Rates) (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Contingency [Line Items]
U.S. federal statutory income tax rate	35.00%	35.00%	35.00%
Tax On Global Activities Including Exports	(24.10%)	(45.00%)	(18.40%)
U.S. business credits	(4.60%)	(4.60%)	(4.30%)
All other - net	(4.50%)	1.00%	(1.50%)
Total income tax reconciliation items	(33.20%)	(48.60%)	(28.40%)
Actual income tax rate	1.80%	(13.60%)	6.60%
Cembra [Member]
Income Tax Contingency [Line Items]
Tax On Global Activities Including Exports	(13.30%)