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Earnings Per Share (Tables)
 9 Months Ended
Sep. 30, 2023
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
 2023202220232022
($ in millions, except per share amounts,
shares in millions)
Net income$478 $958 $478 $958 
Dividend equivalent payments(1)— (1)— 
Income available to common stockholders$477 $958 $477 $958 
Weighted-average shares outstanding226.4 233.2 226.4 233.2 
Dilutive effect of outstanding options and share-settled awards  0.6 0.8 
Adjusted weighted-average shares outstanding  227.0 234.0 
Earnings per share$2.11 $4.11 $2.10 $4.10 
 BasicDiluted
 First Nine Months
 2023202220232022
($ in millions, except per share amounts,
shares in millions)
Net income$1,300 $2,480 $1,300 $2,480 
Dividend equivalent payments(2)(1)(2)(1)
Income available to common stockholders$1,298 $2,479 $1,298 $2,479 
Weighted-average shares outstanding227.2 236.4 227.2 236.4 
Dilutive effect of outstanding options and share-settled awards  0.6 0.8 
Adjusted weighted-average shares outstanding 227.8 237.2 
Earnings per share$5.71 $10.49 $5.70 $10.45