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ASSETS HELD FOR SALE (Tables)
 12 Months Ended
Dec. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]  
Summarizes Carrying Values of Assets and Liabilities Classified as Held for Sale The following table summarizes the carrying values of the assets and liabilities classified as held for sale in our consolidated balance sheet as of December 31, 2020 (in millions):
2020
Assets:
Accounts receivable, net$263 
Other current assets62 
Property, plant and equipment, net940 
Other non-current assets124 
Total assets1,389 
Valuation allowance(192)
Total assets held for sale$1,197 
Liabilities:
Accounts payable$50 
Other current liabilities112 
Other non-current liabilities185 
Total liabilities to be disposed of$347 
Net assets held for sale$850