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ACCRUED LIABILITIES (Tables)
9 Months Ended
Sep. 30, 2021
Payables and Accruals [Abstract]  
Schedule of Accrued Liabilities
Accrued liabilities were as follows (in millions):
December 31, 2020September 30, 2021
Accrued purchases$389 $446 
Accrued payroll44 62 
Other10 32 
Total accrued liabilities$443 $540