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Earnings Per Share (Tables)
 6 Months Ended
Jun. 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
 Second Quarter
 2024202320242023
($ in millions, except per share amounts,
shares in millions)
Net income$737 $356 $737 $356 
Dividend equivalent payments(1)— (1)— 
Income available to common stockholders$736 $356 $736 $356 
Weighted-average shares outstanding226.0 227.5 226.0 227.5 
Dilutive effect of outstanding options and share-settled awards  0.4 0.5 
Adjusted weighted-average shares outstanding  226.4 228.0 
Earnings per share$3.26 $1.56 $3.25 $1.56 
 BasicDiluted
 First Six Months
 2024202320242023
($ in millions, except per share amounts,
shares in millions)
Net income$790 $822 $790 $822 
Dividend equivalent payments(2)(1)(2)(1)
Income available to common stockholders$788 $821 $788 $821 
Weighted-average shares outstanding225.9 227.6 225.9 227.6 
Dilutive effect of outstanding options and share-settled awards  0.4 0.5 
Adjusted weighted-average shares outstanding 226.3 228.1 
Earnings per share$3.49 $3.61 $3.48 $3.60