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OPERATING SEGMENTS - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Segment Reporting Information [Line Items]      
Performance obligations expected to be satisfied $ 236,582    
U.S.      
Segment Reporting Information [Line Items]      
Property, plant and equipment - net 5,223 $ 6,129  
Non-U.S.      
Segment Reporting Information [Line Items]      
Property, plant and equipment - net 6,970 $ 7,198  
Equipment      
Segment Reporting Information [Line Items]      
Performance obligations expected to be satisfied $ 44,198    
Equipment | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Performance obligation satisfaction, period one      
Segment Reporting Information [Line Items]      
Performance obligation expected to be satisfied (as a percent) 55.00%    
Performance obligations expected to be satisfied, expected timing 1 year    
Equipment | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Performance obligation satisfaction, period two      
Segment Reporting Information [Line Items]      
Performance obligation expected to be satisfied (as a percent) 80.00%    
Performance obligations expected to be satisfied, expected timing 2 years    
Equipment | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Performance obligation satisfaction, period three      
Segment Reporting Information [Line Items]      
Performance obligation expected to be satisfied (as a percent) 98.00%    
Performance obligations expected to be satisfied, expected timing 5 years    
Services      
Segment Reporting Information [Line Items]      
Performance obligations expected to be satisfied $ 192,385    
Services | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Performance obligation satisfaction, period one      
Segment Reporting Information [Line Items]      
Performance obligation expected to be satisfied (as a percent) 12.00%    
Performance obligations expected to be satisfied, expected timing 1 year    
Services | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Performance obligation satisfaction, period two      
Segment Reporting Information [Line Items]      
Performance obligation expected to be satisfied (as a percent) 44.00%    
Performance obligations expected to be satisfied, expected timing 5 years    
Services | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Performance obligation satisfaction, period three      
Segment Reporting Information [Line Items]      
Performance obligation expected to be satisfied (as a percent) 69.00%    
Performance obligations expected to be satisfied, expected timing 10 years    
Services | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Performance obligation satisfaction, period four      
Segment Reporting Information [Line Items]      
Performance obligation expected to be satisfied (as a percent) 84.00%    
Performance obligations expected to be satisfied, expected timing 15 years    
Revenue benchmark | Agencies of the U.S. Government | Customer Concentration Risk      
Segment Reporting Information [Line Items]      
Concentration risk (as a percentage) 8.00% 8.00% 8.00%
Revenue benchmark | Defense-related | Customer Concentration Risk | Aerospace      
Segment Reporting Information [Line Items]      
Concentration risk (as a percentage) 7.00% 7.00% 7.00%