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Other Commitments And Contingencies (Other) (Narrative) (Details) - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Dec. 31, 2009
Dec. 31, 2013
Dec. 31, 2004
Jun. 30, 2015
Dec. 31, 2014
Loss Contingencies [Line Items]          
Performance Bond Recovery Including Interest   $ 26      
Claims receivable       $ 576 $ 570
Pemex [Member]          
Loss Contingencies [Line Items]          
Outstanding performance bonds by enterprise   80      
Payment on performance bonds   108      
Customer's arbitration claim     $ 157    
Amount of arbitration claim filed by enterprise     $ 323    
Amount awarded to enterprise in arbitration $ 351        
Amount of counterclaims awarded to project owner in arbitration 6        
Gain recognized $ 117        
Amount of judgment awarded to enterprise   465      
Performance Bond Recovery Including Interest   106      
PaymentOnPerformanceBondsOther   $ 2      
Claims and Account Receivable [Member]          
Loss Contingencies [Line Items]          
Claims receivable       $ 401