REVENUE - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Lease & related maintenance and rental revenues	$ 4,174	$ 3,995	$ 3,704
Contracted not recognized revenue	2,300
Initial direct costs of leases	126	106
Sales commissions expense	44	44	44
Start-up Costs
Disaggregation of Revenue [Line Items]
Capitalized start-up costs	73	54
Start-up contract amortization expense	28	23	11
Maintenance Services
Disaggregation of Revenue [Line Items]
Lease & related maintenance and rental revenues	$ 1,000	$ 1,000	$ 965