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, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period     $ (1,890)  
Before tax amount $ (95) $ (191) (33) $ (138)
Tax (expense) benefit 1 (9) 8 (19)
After tax amount (94) (200) (25) (157)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (2) 4 (1) 9
Net current period other comprehensive (loss) income (96) (196) (26) (148)
Balance at the end of the period (1,917)   (1,917)  
Change in pension and OPEB plans        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period (436) (330) (427) (346)
Before tax amount 0 0 (13) 14
Tax (expense) benefit 0 1 2 (3)
After tax amount 0 1 (11) 11
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 2 5 4 11
Net current period other comprehensive (loss) income 2 6 (7) 22
Balance at the end of the period (434) (324) (434) (324)
Foreign currency translation adjustment        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period (1,473) (1,196) (1,552) (1,208)
Before tax amount (111) (235) (36) (224)
Tax (expense) benefit 3 5 7 6
After tax amount (108) (230) (29) (218)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 0 0 0 0
Net current period other comprehensive (loss) income (108) (230) (29) (218)
Balance at the end of the period (1,581) (1,426) (1,581) (1,426)
Unrealized gain (loss) on derivatives        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period 86 11 89 (17)
Before tax amount 18 59 15 95
Tax (expense) benefit (2) (15) (1) (22)
After tax amount 16 44 14 73
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (4) (1) (5) (2)
Net current period other comprehensive (loss) income 12 43 9 71
Balance at the end of the period 98 54 98 54
Total attributable to Cummins Inc.        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at the beginning of the period (1,823) (1,515) (1,890) (1,571)
Before tax amount (93) (176) (34) (115)
Tax (expense) benefit 1 (9) 8 (19)
After tax amount (92) (185) (26) (134)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (2) 4 (1) 9
Net current period other comprehensive (loss) income (94) (181) (27) (125)
Balance at the end of the period (1,917) (1,696) (1,917) (1,696)
Noncontrolling interests        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Before tax amount (2) (15) 1 (23)
Tax (expense) benefit 0 0 0 0
After tax amount (2) (15) 1 (23)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 0 0 0  
Net current period other comprehensive (loss) income $ (2) $ (15) $ 1 $ (23)