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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Jan. 01, 2019
Mar. 31, 2019
Dec. 31, 2021
Dec. 31, 2020
Percentage of LIFO Inventory     27.00% 30.00%
Percentage of FIFO Inventory     65.00% 58.00%
Percentage of Weighted Average Cost Inventory     8.00% 12.00%
Operating Lease, Right-of-Use Asset     $ 1,412 $ 1,856
Minimum        
Useful life     3 years  
Maximum        
Useful life     20 years  
Asset retirement obligations, estimated remaining useful life     10 years  
Accounting Standards Update 2016-02 [Member]        
Operating Lease, Right-of-Use Asset $ 2,300      
Stockholders' Equity, Period Increase (Decrease)   $ 32    
Retained Earnings [Member]        
Stockholders' Equity, Period Increase (Decrease) $ 183