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Basis of Presentation (Unaudited) (Tables)
6 Months Ended
Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Change in Accounting Estimate [Table Text Block] The following table presents the effect of aggregate net EAC adjustments:
 Three Months Ended June 30Six Months Ended June 30
$ in millions, except per share data2023202220232022
Revenue$95 $95 $157 $304 
Operating income76 92 122 265 
Net earnings(1)
60 73 96 209 
Diluted earnings per share(1)
0.39 0.47 0.63 1.34 
(1)Based on a 21 percent statutory tax rate
Accumulated Other Comprehensive Loss The components of accumulated other comprehensive loss, net of tax, are as follows:
$ in millionsJune 30, 2023December 31, 2022
Cumulative translation adjustment$(156)$(161)
Other, net6 
Total accumulated other comprehensive loss$(150)$(153)