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EATON SHAREHOLDERS' EQUITY - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of period $ 18,531 $ 19,069 $ 17,075
Other comprehensive income (loss) before reclassifications 210    
Amounts reclassified from Accumulated other comprehensive loss (income) 13    
Net current-period Other comprehensive income (loss) 223 (436) 39
Balance at end of period 19,469 18,531 19,069
Total      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of period (4,342) (3,906) (3,946)
Balance at end of period (4,118) (4,342) $ (3,906)
Currency translation and related hedging instruments      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of period (3,399)    
Other comprehensive income (loss) before reclassifications 255    
Amounts reclassified from Accumulated other comprehensive loss (income) (15)    
Net current-period Other comprehensive income (loss) 240    
Balance at end of period (3,159) (3,399)  
Pensions and other postretirement benefits      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of period (1,044)    
Other comprehensive income (loss) before reclassifications (68)    
Amounts reclassified from Accumulated other comprehensive loss (income) 50    
Net current-period Other comprehensive income (loss) (18)    
Balance at end of period (1,062) (1,044)  
Cash flow hedges      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of period 101    
Other comprehensive income (loss) before reclassifications 23    
Amounts reclassified from Accumulated other comprehensive loss (income) (22)    
Net current-period Other comprehensive income (loss) 1    
Balance at end of period $ 102 $ 101