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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2022
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table sets forth the calculation of basic and diluted earnings per share:

 BasicDiluted
 First Quarter
 2022202120222021
($ in millions, except per share amounts,
shares in millions)
Net income$703 $673 $703 $673 
Dividend equivalent payments— (1)— — 
Income available to common stockholders$703 $672 $703 $673 
Weighted-average shares outstanding239.3 251.4 239.3 251.4 
Dilutive effect of outstanding options and share-settled awards  0.9 1.2 
Adjusted weighted-average shares outstanding  240.2 252.6 
Earnings per share$2.94 $2.67 $2.93 $2.66