OPERATING SEGMENTS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Performance obligations expected to be satisfied	$ 267,233
U.S. | Continuing operations
Segment Reporting Information [Line Items]
Property, plant and equipment, percent of total assets	4.00%	3.00%
Non-U.S. | Continuing operations
Segment Reporting Information [Line Items]
Property, plant and equipment, percent of total assets	3.00%	4.00%
Equipment
Segment Reporting Information [Line Items]
Performance obligations expected to be satisfied	$ 54,675
Equipment | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Performance obligation satisfaction, period one
Segment Reporting Information [Line Items]
Performance obligation expected to be satisfied (as a percent)	44.00%
Performance obligations expected to be satisfied, expected timing	1 year
Equipment | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Performance obligation satisfaction, period two
Segment Reporting Information [Line Items]
Performance obligation expected to be satisfied (as a percent)	68.00%
Performance obligations expected to be satisfied, expected timing	2 years
Equipment | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Performance obligation satisfaction, period three
Segment Reporting Information [Line Items]
Performance obligation expected to be satisfied (as a percent)	92.00%
Performance obligations expected to be satisfied, expected timing	5 years
Services
Segment Reporting Information [Line Items]
Performance obligations expected to be satisfied	$ 212,558
Services | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | 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]: 2024-01-01 | Performance obligation satisfaction, period two
Segment Reporting Information [Line Items]
Performance obligation expected to be satisfied (as a percent)	42.00%
Performance obligations expected to be satisfied, expected timing	5 years
Services | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Performance obligation satisfaction, period three
Segment Reporting Information [Line Items]
Performance obligation expected to be satisfied (as a percent)	66.00%
Performance obligations expected to be satisfied, expected timing	10 years
Services | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Performance obligation satisfaction, period four
Segment Reporting Information [Line Items]
Performance obligation expected to be satisfied (as a percent)	82.00%
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)	6.00%	7.00%	7.00%