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Leases (Tables)
9 Months Ended
Sep. 30, 2021
Leases [Abstract]  
Schedule of supplemental balance sheet information
Supplemental balance sheet information related to leases is as follows.

September 30, 2021December 31, 2020
Operating lease right-of-use assets:
Included within other noncurrent assets$1,279 $1,214 
Operating lease liabilities:
Current portion included within accounts payable and accrued liabilities$262 $235 
Long-term portion included within other long-term liabilities1,159 1,110 
$1,421 $1,345 
Weighted average remaining lease term for operating leases5.9 years6.4 years
Weighted average discount rate for operating leases3.5 %3.9 %
Schedule of future minimum lease payments for operating leases
Maturities of operating lease liabilities as of September 30, 2021 are as follows.

Three months ended December 31, 2021$83 
2022327 
2023310 
2024261 
2025209 
Thereafter443 
Undiscounted lease cash flow commitments
1,633 
Reconciling impact from discounting(212)
Lease liabilities on consolidated balance sheet as of September 30, 2021
$1,421