Quarterly report pursuant to Section 13 or 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details)

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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period     $ (2,206)  
Before tax amount $ (74) $ (95) (192) $ (33)
Tax benefit (expense) 0 1 (4) 8
After tax amount (74) (94) (196) (25)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 1 (2) (62) 1
Net current period other comprehensive (loss) income (73) (96) (134) (26)
Balance at the end of the period (2,335)   (2,335)  
Change in pension and OPEB plans        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period (861) (436) (848) (427)
Before tax amount 6 0 (15) (13)
Tax benefit (expense) 0 0 3 2
After tax amount 6 0 (12) (11)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 7 2 12 4
Net current period other comprehensive (loss) income 13 2 0 (7)
Balance at the end of the period (848) (434) (848) (434)
Foreign currency translation adjustment        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period (1,514) (1,473) (1,457) (1,552)
Before tax amount (82) (111) (198) (36)
Tax benefit (expense) 1 3 (1) 7
After tax amount (81) (108) (199) (29)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 0 0 61 0
Net current period other comprehensive (loss) income (81) (108) (138) (29)
Balance at the end of the period (1,595) (1,581) (1,595) (1,581)
Unrealized gain (loss) on derivatives        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period 111 86 99 89
Before tax amount 4 18 26 15
Tax benefit (expense) (1) (2) (6) (1)
After tax amount 3 16 20 14
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (6) (4) (11) (5)
Net current period other comprehensive (loss) income (3) 12 9 9
Balance at the end of the period 108 98 108 98
Total attributable to Cummins Inc.        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period (2,264) (1,823) (2,206) (1,890)
Before tax amount (72) (93) (187) (34)
Tax benefit (expense) 0 1 (4) 8
After tax amount (72) (92) (191) (26)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 1 (2) (62) 1
Net current period other comprehensive (loss) income (71) (94) (129) (27)
Balance at the end of the period (2,335) (1,917) (2,335) (1,917)
Noncontrolling interests        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Before tax amount (2) (2) (5) 1
Tax benefit (expense) 0   0 0
After tax amount (2) (2) (5) 1
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 0   0 0
Net current period other comprehensive (loss) income $ (2) $ (2) $ (5) $ 1