Quarterly report [Sections 13 or 15(d)]

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details)

v3.25.3
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period     $ (2,445)  
Before tax amount $ (62) $ 142 176 $ (50)
Tax benefit (expense) (2) 22 41 18
After tax amount (64) 164 217 (32)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 2 (1) 3 61
Net current period other comprehensive (loss) income (62) 163 220 29
Balance at the end of the period (2,211)   (2,211)  
Change in pension and OPEB plans        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period (863) (848) (843) (848)
Before tax amount (1) 1 (45) (14)
Tax benefit (expense) 2 0 12 3
After tax amount 1 1 (33) (11)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 7 4 21 16
Net current period other comprehensive (loss) income 8 5 (12) 5
Balance at the end of the period (855) (843) (855) (843)
Foreign currency translation adjustment        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period (1,407) (1,595) (1,717) (1,457)
Before tax amount (45) 142 232 (56)
Tax benefit (expense) (4) 21 29 20
After tax amount (49) 163 261 (36)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 0 0 0 61
Net current period other comprehensive (loss) income (49) 163 261 25
Balance at the end of the period (1,456) (1,432) (1,456) (1,432)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period 103 108 115 99
Before tax amount 2 (3) 3 23
Tax benefit (expense) 0 1 0 (5)
After tax amount 2 (2) 3 18
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (5) (5) (18) (16)
Net current period other comprehensive (loss) income (3) (7) (15) 2
Balance at the end of the period 100 101 100 101
Total attributable to Cummins Inc.        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period (2,167) (2,335) (2,445) (2,206)
Before tax amount (44) 140 190 (47)
Tax benefit (expense) (2) 22 41 18
After tax amount (46) 162 231 (29)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 2 (1) 3 61
Net current period other comprehensive (loss) income (44) 161 234 32
Balance at the end of the period (2,211) (2,174) (2,211) (2,174)
Noncontrolling interests        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Before tax amount (18) 2 (14) (3)
Tax benefit (expense) 0   0 0
After tax amount (18) 2 (14) (3)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 0   0 0
Net current period other comprehensive (loss) income $ (18) $ 2 $ (14) $ (3)