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Leases
 6 Months Ended
Jun. 30, 2023
Leases [Abstract]  
Leases Leases
Operating lease cost includes short-term leases and variable lease payments and approximates cash paid. Operating lease cost was $16 and $14 in the second quarter of 2023 and 2022, respectively, and $32 and $30 in the six months ended June 30, 2023 and 2022, respectively. Operating lease cost in the second quarter and six months ended June 30, 2023 includes the lease for the portion of the property in Pittsburgh, PA used as the corporate headquarters.
Operating lease right-of-use assets and lease liabilities in the Consolidated Balance Sheet were as follows:
June 30, 2023December 31, 2022
Right-of-use assets classified in Other noncurrent assets$107 $111 
Current portion of lease liabilities classified in Other current liabilities
$34 $32 
Long-term portion of lease liabilities classified in Other noncurrent liabilities and deferred credits77 83 
Total lease liabilities$111 $115