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Earnings Per Share (Tables)
 9 Months Ended
Sep. 30, 2024
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share Calculation
The following table sets forth the calculation of basic and diluted earnings per share:

 BasicDiluted
 Third Quarter
 2024202320242023
($ in millions, except per share amounts,
shares in millions)
Net income$1,099 $478 $1,099 $478 
Dividend equivalent payments— (1)— (1)
Income available to common stockholders$1,099 $477 $1,099 $477 
Weighted-average shares outstanding226.2 226.4 226.2 226.4 
Dilutive effect of outstanding options and share-settled awards  0.3 0.6 
Adjusted weighted-average shares outstanding  226.5 227.0 
Earnings per share$4.86 $2.11 $4.85 $2.10 
 BasicDiluted
 First Nine Months
 2024202320242023
($ in millions, except per share amounts,
shares in millions)
Net income$1,889 $1,300 $1,889 $1,300 
Dividend equivalent payments(2)(2)(2)(2)
Income available to common stockholders$1,887 $1,298 $1,887 $1,298 
Weighted-average shares outstanding226.0 227.2 226.0 227.2 
Dilutive effect of outstanding options and share-settled awards  0.3 0.6 
Adjusted weighted-average shares outstanding 226.3 227.8 
Earnings per share$8.35 $5.71 $8.34 $5.70