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Summary of Significant Accounting Policies (Unaudited) (Tables)
 9 Months Ended
Sep. 30, 2025
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 September 30Nine Months Ended September 30
$ in millions, except per share data2025202420252024
Revenue$181 $131 $383 $242 
Operating income81 136 107 268 
Net earnings(1)
64 107 85 212 
Diluted earnings per share(1)
0.45 0.73 0.59 1.43 
(1)Based on a 21 percent federal statutory tax rate
Accumulated Other Comprehensive Loss
The components of accumulated other comprehensive loss, net of tax, are as follows:
$ in millionsSeptember 30, 2025December 31, 2024
Cumulative translation adjustment$(129)$(140)
Other, net6 (12)
Total accumulated other comprehensive loss$(123)$(152)