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Earnings Per Share
3 Months Ended
Mar. 31, 2022
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share
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 
During the first quarters of 2022 and 2021, dividend equivalent payments were made to certain holders of stock options and RSUs.  For purposes of computing basic earnings per share, dividend equivalent payments made to holders of stock options and RSUs were deducted from net income to determine income available to common stockholders. For purposes of computing diluted earnings per share, we evaluate on a grant-by-grant basis those stock options and RSUs receiving dividend equivalent payments under the two-class and treasury stock methods to determine which method is more dilutive for each grant. For those grants for which the two-class method was more dilutive, net income was reduced by dividend equivalent payments to determine income available to common stockholders. The dilution calculations exclude options having exercise prices exceeding the average market price of Common Stock as follows: 0.1 million and none in the first quarters ended March 31, 2022 and 2021, respectively.