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ASSETS HELD FOR SALE (Tables)
3 Months Ended
Mar. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]  
Carrying Value of Assets and Liabilities Held for Sale The following table summarizes the carrying values of the assets and liabilities classified as held for sale in our consolidated balance sheets as of March 31, 2021 and December 31, 2020 (in millions):
20212020
Assets:
Accounts receivable, net$284 $263 
Other current assets67 62 
Property, plant and equipment, net949 940 
Other non-current assets93 124 
Total assets1,393 1,389 
Valuation allowance(258)(192)
Total assets held for sale$1,135 $1,197 
Liabilities:
Accounts payable$47 $50 
Other current liabilities118 112 
Other non-current liabilities131 185 
Total liabilities to be disposed of$296 $347 
Net assets held for sale$839 $850