Income Taxes (Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
U.S. federal statutory income tax rate	35.00%	35.00%	35.00%
Tax on global activities including exports	(18.90%)	(15.00%)	(54.80%)
Business Property disposition	(4.20%)	0.00%	0.00%
U.S. business credits	(4.30%)	(4.70%)	(13.50%)
All other - net	(1.40%)	(3.50%)	(12.50%)
Total income tax reconciliation items	(28.80%)	(23.20%)	(80.80%)
Actual income tax rate	6.20%	11.80%	(45.80%)