Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - NEW ACCOUNTING PRONOUNCEMENTS (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - NEW ACCOUNTING PRONOUNCEMENTS (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Jan. 01, 2019
RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS    
Operating lease liabilities $ 426  
Operating lease right-of-use assets $ 396  
ASU 2016-02 | Restatement Adjustment    
RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS    
Operating lease liabilities   $ 400
Operating lease right-of-use assets   $ 371