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LEGAL PROCEEDINGS AND CONTINGENCIES (Details)
$ in Millions
1 Months Ended 3 Months Ended
Apr. 24, 2009
USD ($)
Dec. 31, 2014
Jun. 30, 2006
subsidiary
Mar. 27, 2022
USD ($)
Dec. 31, 2021
USD ($)
May 31, 2017
lawsuit
Loss Contingencies [Line Items]            
Damages sought by plaintiff       $ 52    
Liabilities recorded relative to environmental matters       729 $ 742  
Environmental costs eligible for future recovery       $ 632 645  
Period over which costs and recovery of costs is projected       20 years    
Outstanding letters of credit, surety bonds, and third-party guarantees       $ 3,500 3,600  
Third-party guarantees       $ 829 $ 838  
Guarantees of contractual performance of joint ventures (as a percent)       69.00%    
N.Y. Metropolitan Transportation Authority            
Loss Contingencies [Line Items]            
Damages sought by plaintiff $ 190          
Contract value 323          
Contract payments received to date 241          
Claims for monetary damages against the plaintiff $ 95          
Period of bench trial   35 days        
Sikorsky Aircraft Corporation            
Loss Contingencies [Line Items]            
Number of pending claims | lawsuit           2
Number of entities involved in litigation | subsidiary     2