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RETIREMENT BENEFITS PLANS - Pension Plans Assumptions (Details) - Pension plans
 12 Months Ended
Dec. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
United States        
Assumptions used to determine benefit obligation at year-end (as a percent)        
Discount rate   5.34% 5.61% 5.14%
Rate of compensation increase   3.05% 3.32% 3.40%
Interest rate used to credit cash balance plans   4.56% 4.79% 4.01%
Assumptions used to determine expense (as a percent)        
Discount rate used to determine benefit obligation   5.61% 5.14% 5.47%
Discount rate used to determine service cost   5.76% 5.24% 5.54%
Discount rate used to determine interest cost   5.29% 4.98% 5.33%
Expected long-term return on plan assets   7.00% 6.50% 6.50%
Rate of compensation increase   3.32% 3.40% 3.33%
Interest rate used to credit cash balance plans   4.79% 4.01% 3.67%
Non-United States plans        
Assumptions used to determine benefit obligation at year-end (as a percent)        
Discount rate   5.11% 4.92% 4.52%
Rate of compensation increase   3.13% 3.16% 3.17%
Interest rate used to credit cash balance plans   2.50% 2.01% 1.59%
Assumptions used to determine expense (as a percent)        
Discount rate used to determine benefit obligation   4.92% 4.52% 4.83%
Discount rate used to determine service cost   5.90% 6.00% 5.90%
Discount rate used to determine interest cost   4.71% 4.47% 4.80%
Expected long-term return on plan assets   6.63% 6.79% 6.32%
Rate of compensation increase   3.16% 3.17% 3.12%
Interest rate used to credit cash balance plans   2.01% 1.59% 2.32%
Forecast | United States        
Assumptions used to determine expense (as a percent)        
Expected long-term return on plan assets 7.50%      
Forecast | Non-United States plans        
Assumptions used to determine expense (as a percent)        
Expected long-term return on plan assets 7.00%