Quarterly report [Sections 13 or 15(d)]

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details)

v3.25.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at the beginning of the period $ (2,445)  
Before tax amount 60 $ (118)
Tax expense 22 (4)
After tax amount 82 (122)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (1) 61
Net current period other comprehensive (loss) income 81 (61)
Balance at the end of the period (2,366)  
Change in pension and OPEB plans    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at the beginning of the period (843) (848)
Before tax amount (44) (21)
Tax expense 10 3
After tax amount (34) (18)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 7 5
Net current period other comprehensive (loss) income (27) (13)
Balance at the end of the period (870) (861)
Foreign currency translation adjustment    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at the beginning of the period (1,717) (1,457)
Before tax amount 104 (116)
Tax expense 11 (2)
After tax amount 115 (118)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 0 61
Net current period other comprehensive (loss) income 115 (57)
Balance at the end of the period (1,602) (1,514)
Unrealized gain (loss) on derivatives    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at the beginning of the period 115 99
Before tax amount (2) 22
Tax expense 1 (5)
After tax amount (1) 17
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (8) (5)
Net current period other comprehensive (loss) income (9) 12
Balance at the end of the period 106 111
Total attributable to Cummins Inc.    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at the beginning of the period (2,445) (2,206)
Before tax amount 58 (115)
Tax expense 22 (4)
After tax amount 80 (119)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (1) 61
Net current period other comprehensive (loss) income 79 (58)
Balance at the end of the period (2,366) (2,264)
Noncontrolling interests    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Before tax amount 2 (3)
Tax expense 0 0
After tax amount 2 (3)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 0 0
Net current period other comprehensive (loss) income $ 2 $ (3)