CONTRACT AND OTHER DEFERRED ASSETS, CONTRACT LIABILITIES AND DEFERRED INCOME & PROGRESS COLLECTIONS - Schedule of Contract Assets, Liabilities and Other Deferred Assets and Income (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Contractors [Abstract]
Long-term service agreements	$ 2,116	$ 2,377
Equipment and other service agreements	603	498
Current contract assets	2,719	2,875
Nonrecurring engineering costs	2,434	2,444
Customer advances and other	2,367	2,342
Contract and other deferred assets	4,801	4,785
Total contract and other deferred assets	7,521	7,660
Long-term service agreement liabilities	8,337	7,902
Current deferred income	335	420
Contract liabilities and current deferred income	8,671	8,322
Non-current deferred income	960	975
Total contract liabilities and deferred income	9,631	9,297
Contract assets (liabilities) and other deferred assets (income)	$ (2,111)	$ (1,637)