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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
reporting_unit
country
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Accounting Policies [Line Items]      
Net sales $ 27,448 $ 24,878 $ 23,196
Countries where products are sold (more than) | country 180    
Investments in associate companies $ 903 872  
Income (loss) from investments in associate companies 8 12 20
Gains from remeasurement of foreign currency $ 13 15 27
Other postretirement benefits expense (income)      
Accounting Policies [Line Items]      
Defined benefit plan, amortization period of gain (loss) 9 years    
Aerospace Segment      
Accounting Policies [Line Items]      
Net sales $ 4,249 $ 3,744 $ 3,413
Number of reporting units | reporting_unit 2    
United States | Pension plans      
Accounting Policies [Line Items]      
Defined benefit plan, amortization period of gain (loss) 21 years    
Non-United States plans | Pension plans      
Accounting Policies [Line Items]      
Defined benefit plan, amortization period of gain (loss) 10 years    
Minimum      
Accounting Policies [Line Items]      
Defined benefit plan, accounting corridor for amortization of net actuarial gains (losses) (as a percent) 8.00%    
Portion of intercompany balance sheet exposure (as a percent) 95.00%    
Maximum      
Accounting Policies [Line Items]      
Defined benefit plan, accounting corridor for amortization of net actuarial gains (losses) (as a percent) 10.00%    
Portion of intercompany balance sheet exposure (as a percent) 100.00%