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SIGNIFICANT ACCOUNTING POLICIES Recently Issued Accounting Standards (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Receivable Sold Under Factoring Arrangement $ 252 $ 336 $ 839 $ 1,204