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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of stock-based compensation cost
First Quarter
20222021
($ in millions)
Stock-based compensation expense$23 $16 
Total tax benefit13 17 
Schedule of LTIP awards
During the first quarter of 2022, we granted stock options, restricted stock units (RSUs) and performance share units (PSUs) pursuant to the Long-Term Incentive Plan (LTIP), as follows:

First Quarter
GrantedWeighted-Average Grant-Date Fair Value
Stock options132,170 $60.40 
RSUs154,901 268.48 
PSUs49,025 274.84 
Schedule of cash proceeds received from share-based payment awards
First Quarter
20222021
($ in millions)
Options exercised119,343212,546 
Cash received upon exercise$10 $19 
Related tax benefits realized
Restricted Stock Units (RSUs)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of share-based compensation, activity
First Quarter
20222021
($ in millions)
RSUs vested243,301 257,397 
Common Stock issued net of tax withholding172,364 182,289 
Related tax benefits realized$$
Performance Share Units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of share-based compensation, activity
First Quarter
20222021
($ in millions)
PSUs earned86,420 78,727
Common Stock issued net of tax withholding54,651 49,967
Related tax benefits realized$$