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PROPERTY, PLANT AND EQUIPMENT AND OPERATING LEASES
 6 Months Ended
Jun. 30, 2023
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT AND OPERATING LEASES
NOTE 6. PROPERTY, PLANT AND EQUIPMENT AND OPERATING LEASES
June 30, 2023December 31, 2022
Original cost$27,212 $26,641 
Less accumulated depreciation and amortization(16,771)(16,303)
Right-of-use operating lease assets1,932 1,854 
Property, plant and equipment – net$12,374 $12,192 

Operating Lease Liabilities. Our consolidated operating lease liabilities, included in All other liabilities in our Statement of Financial Position, were $2,097 million and $2,089 million, as of June 30, 2023 and December 31, 2022, respectively. Expense on our operating lease portfolio, primarily from our long-term fixed leases, was $206 million and $210 million, and $401 million and $436 million, for the three and six months ended June 30, 2023 and 2022, respectively.