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Income Taxes (Unaudited) (Tables)
 6 Months Ended
Jun. 30, 2025
Income Tax Disclosure [Abstract]  
Schedule of Income Tax Expense and Effective Income Tax Rates
 Three Months Ended June 30Six Months Ended June 30
$ in millions2025202420252024
Federal and foreign income tax expense$253 $206 $350 $393 
Effective income tax rate17.7 %18.0 %17.5 %17.3 %