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Basis Of Presentation Basis of Presentation (Tables)
 6 Months Ended
Jun. 30, 2017
Net cumulative catch-up adjustments [Abstract]  
Schedule of Change in Accounting Estimate [Table Text Block]
Net cumulative catch-up adjustments to prior years' earnings, including reach-forward losses, across all contracts were as follows:
 
Six months ended June 30
 
Three months ended June 30
 
2017

 
2016

 
2017

 
2016

Increase/(Decrease) to Earnings from Operations

$263

 

($587
)
 

$231

 

($503
)
Increase/(Decrease) to Diluted EPS

$0.31

 

($0.70
)
 

$0.27

 

($0.39
)