CONTRACT AND OTHER DEFERRED ASSETS & PROGRESS COLLECTIONS AND DEFERRED INCOME - Schedule of Contract Assets (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	$ 3,701	$ 4,881
Nonrecurring engineering costs	2,604	2,550
Customer advances and other	3,617	3,574
Non-current contract and other deferred assets	6,221	6,124
Total contract and other deferred assets	9,922	11,005
Services | Long-term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues in excess of billings	7,843	7,972
Billings in excess of revenues	(7,990)	(7,346)
Long-term service agreements	(147)	627
Services | Short-term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	805	692
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	3,043	3,562
Operating segments | Aerospace
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	(3,586)	(2,881)
Nonrecurring engineering costs	2,555	2,479
Customer advances and other	2,654	2,620
Non-current contract and other deferred assets	5,209	5,099
Total contract and other deferred assets	1,622	2,218
Operating segments | Aerospace | Services | Long-term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues in excess of billings	2,335	2,478
Billings in excess of revenues	(6,358)	(5,731)
Long-term service agreements	(4,023)	(3,253)
Operating segments | Aerospace | Services | Short-term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	414	340
Operating segments | Aerospace | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	22	33
Operating segments | HealthCare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	575	453
Nonrecurring engineering costs	28	31
Customer advances and other	187	154
Non-current contract and other deferred assets	215	184
Total contract and other deferred assets	790	637
Operating segments | HealthCare | Services | Long-term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues in excess of billings	0	0
Billings in excess of revenues	0	0
Long-term service agreements	0	0
Operating segments | HealthCare | Services | Short-term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	180	166
Operating segments | HealthCare | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	395	287
Operating segments | Renewable Energy
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	1,102	1,384
Nonrecurring engineering costs	15	28
Customer advances and other	0	0
Non-current contract and other deferred assets	15	28
Total contract and other deferred assets	1,117	1,412
Operating segments | Renewable Energy | Services | Long-term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues in excess of billings	0	0
Billings in excess of revenues	0	0
Long-term service agreements	0	0
Operating segments | Renewable Energy | Services | Short-term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	117	87
Operating segments | Renewable Energy | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	985	1,297
Operating segments | Power
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	5,366	5,669
Nonrecurring engineering costs	6	12
Customer advances and other	776	801
Non-current contract and other deferred assets	782	813
Total contract and other deferred assets	6,149	6,482
Operating segments | Power | Services | Long-term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues in excess of billings	5,507	5,495
Billings in excess of revenues	(1,632)	(1,614)
Long-term service agreements	3,876	3,880
Operating segments | Power | Services | Short-term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	73	80
Operating segments | Power | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	1,418	1,709
Corporate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	244	256
Nonrecurring engineering costs	0	0
Customer advances and other	0	0
Non-current contract and other deferred assets	0	0
Total contract and other deferred assets	243	256
Corporate | Services | Long-term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues in excess of billings	0	0
Billings in excess of revenues	0	0
Long-term service agreements	0	0
Corporate | Services | Short-term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	22	20
Corporate | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current contract assets	$ 222	$ 236