Annual report pursuant to Section 13 and 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details)

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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Changes in accumulated other comprehensive income (loss) by component:      
Balance at the beginning of period $ (2,206)    
Before tax amount (296) $ (413) $ (377)
Tax expense (22) 105 (7)
After tax amount (318) (308) (384)
Amounts reclassified from accumulated other comprehensive income (1) 63 (11) 25
Net current period other comprehensive income (loss) (255) (319) (359)
Balance at the end of period (2,445) (2,206)  
Total attributable to Cummins Inc.      
Changes in accumulated other comprehensive income (loss) by component:      
Balance at the beginning of period (2,206) (1,890) (1,571)
Before tax amount (280) (410) (337)
Tax expense (22) 105 (7)
After tax amount (302) (305) (344)
Amounts reclassified from accumulated other comprehensive income (1) 63 (11) 25
Net current period other comprehensive income (loss) (239) (316) (319)
Balance at the end of period (2,445) (2,206) (1,890)
Change in pensions and other postretirement defined benefit plans      
Changes in accumulated other comprehensive income (loss) by component:      
Balance at the beginning of period (848) (427) (346)
Before tax amount (14) (541) (123)
Tax expense (2) 113 19
After tax amount (16) (428) (104)
Amounts reclassified from accumulated other comprehensive income (1) 21 7 23
Net current period other comprehensive income (loss) 5 (421) (81)
Balance at the end of period (843) (848) (427)
Foreign currency translation adjustment      
Changes in accumulated other comprehensive income (loss) by component:      
Balance at the beginning of period (1,457) (1,552) (1,208)
Before tax amount (313) 96 (350)
Tax expense (8) (1) 6
After tax amount (321) 95 (344)
Amounts reclassified from accumulated other comprehensive income (1) 61 0 0
Net current period other comprehensive income (loss) (260) 95 (344)
Balance at the end of period (1,717) (1,457) (1,552)
Unrealized gain (loss) on derivatives      
Changes in accumulated other comprehensive income (loss) by component:      
Balance at the beginning of period 99 89 (17)
Before tax amount 47 35 136
Tax expense (12) (7) (32)
After tax amount 35 28 104
Amounts reclassified from accumulated other comprehensive income (1) (19) (18) 2
Net current period other comprehensive income (loss) 16 10 106
Balance at the end of period 115 99 89
Noncontrolling interests      
Changes in accumulated other comprehensive income (loss) by component:      
Before tax amount (16) (3) (40)
Tax expense 0 0 0
After tax amount (16) (3) (40)
Amounts reclassified from accumulated other comprehensive income (1) 0 0 0
Net current period other comprehensive income (loss) $ (16) $ (3) $ (40)