Quarterly report [Sections 13 or 15(d)]

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details)

v3.25.2
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period     $ (2,445)  
Before tax amount $ 178 $ (74) 238 $ (192)
Tax benefit (expense) 21 0 43 (4)
After tax amount 199 (74) 281 (196)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 2 1 1 62
Net current period other comprehensive (loss) income 201 (73) 282 (134)
Balance at the end of the period (2,167)   (2,167)  
Change in pension and OPEB plans        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period (870) (861) (843) (848)
Before tax amount 0 6 (44) (15)
Tax benefit (expense) 0 0 10 3
After tax amount 0 6 (34) (12)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 7 7 14 12
Net current period other comprehensive (loss) income 7 13 (20) 0
Balance at the end of the period (863) (848) (863) (848)
Foreign currency translation adjustment        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period (1,602) (1,514) (1,717) (1,457)
Before tax amount 173 (82) 277 (198)
Tax benefit (expense) 22 1 33 (1)
After tax amount 195 (81) 310 (199)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 0 0 0 61
Net current period other comprehensive (loss) income 195 (81) 310 (138)
Balance at the end of the period (1,407) (1,595) (1,407) (1,595)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period 106 111 115 99
Before tax amount 3 4 1 26
Tax benefit (expense) (1) (1) 0 (6)
After tax amount 2 3 1 20
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (5) (6) (13) (11)
Net current period other comprehensive (loss) income (3) (3) (12) 9
Balance at the end of the period 103 108 103 108
Total attributable to Cummins Inc.        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period (2,366) (2,264) (2,445) (2,206)
Before tax amount 176 (72) 234 (187)
Tax benefit (expense) 21 0 43 (4)
After tax amount 197 (72) 277 (191)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 2 1 1 62
Net current period other comprehensive (loss) income 199 (71) 278 (129)
Balance at the end of the period (2,167) (2,335) (2,167) (2,335)
Noncontrolling interests        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Before tax amount 2 (2) 4 (5)
Tax benefit (expense) 0   0 0
After tax amount 2 (2) 4 (5)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 0   0 0
Net current period other comprehensive (loss) income $ 2 $ (2) $ 4 $ (5)