Annual report pursuant to Section 13 and 15(d)

EARNINGS PER SHARE (Details)

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EARNINGS PER SHARE (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Earnings Per Share [Abstract]      
Cummins share of net income $ 2,131 $ 1,789 $ 2,260
Weighted-average common shares outstanding:      
Basic (in shares) 144,600,000 148,200,000 155,400,000
Dilutive effect of stock compensation awards (in shares) 1,300,000 800,000 700,000
Diluted (in shares) 145,900,000 149,000,000.0 156,100,000
Options excluded (in shares) 6,463 645,334 473,845
Earnings per common share attributable to Cummins Inc.      
Basic (in dollars per share) $ 14.74 $ 12.07 $ 14.54
Diluted (in dollars per share) $ 14.61 $ 12.01 $ 14.48