Annual report [Section 13 and 15(d), not S-K Item 405]

EARNINGS PER SHARE (Details)

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EARNINGS PER SHARE (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Earnings Per Share [Abstract]      
Cummins share of net income $ 2,843 $ 3,946 $ 735
Basic (in dollars per share) $ 20.62 $ 28.55 $ 5.19
Diluted (in dollars per share) $ 20.50 $ 28.37 $ 5.15
Weighted-average common shares outstanding:      
Basic (in shares) 137,900,000 138,200,000 141,700,000
Dilutive effect of stock compensation awards (in shares) 800,000 900,000 1,000,000.0
Diluted (in shares) 138,700,000 139,100,000 142,700,000
Options excluded (in shares) 3,825 1,467 10,587