XML 83 R66.htm IDEA: XBRL DOCUMENT v3.21.1
PROPERTY, PLANT AND EQUIPMENT - Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Abstract]    
Original cost $ 31,893 $ 32,098
Less accumulated depreciation and amortization (18,405) (18,251)
Right-of-use operating lease assets 2,808 2,852
Property, plant and equipment – net $ 16,296 $ 16,699