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Leases
 9 Months Ended
Sep. 30, 2021
Leases [Abstract]  
Leases Leases
Operating lease cost, which includes short-term leases and variable lease payments and approximates cash paid, was $15 and $17 in the third quarter of 2021 and 2020, respectively. Operating lease cost, which includes short-term leases and variable lease payments and approximates cash paid, was $48 and $53 in the nine months ended September 30, 2021 and 2020, respectively.
Operating lease right-of-use assets and lease liabilities in the Consolidated Balance Sheet were as follows:
September 30, 2021December 31, 2020
Right-of-use assets classified in Other noncurrent assets$116 $131 
Current portion of lease liabilities classified in Other current liabilities
$34 $38 
Long-term portion of lease liabilities classified in Other noncurrent liabilities88 100 
Total lease liabilities$122 $138