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Leases (Notes) | 9 Months Ended
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Sep. 30, 2021
Leases [Abstract] |
Operating Leases | LeasesOperating lease expenses were $115 million and $345 million for the three and nine months ended September 30, 2021, respectively, and $110 million and $326 million for the three and nine months ended September 30, 2020, respectively, inclusive of $34 million and $104 million for the three and nine months ended September 30, 2021, respectively, and $34 million and $101 million for the three and nine months ended September 30, 2020, respectively, of both short-term lease costs and variable lease costs that were not included in the measurement of operating lease liabilities. Cash paid for amounts included in the measurement of operating lease liabilities, recorded as operating cash flows in the statements of cash flows, were $244 million and $221 million for the nine months ended September 30, 2021 and 2020, respectively. Operating lease right-of-use assets obtained in exchange for operating lease obligations were $271 million and $253 million for the nine months ended September 30, 2021 and 2020, respectively. Supplemental balance sheet information related to leases is as follows.
| September 30, 2021 |  | December 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 liabilities | 1,159 |  |  | 1,110 |
| $ | 1,421 |  |  | $ | 1,345 |
Weighted average remaining lease term for operating leases | 5.9 years |  | 6.4 years
Weighted average discount rate for operating leases | 3.5 | % |  | 3.9 | %
Maturities of operating lease liabilities as of September 30, 2021 are as follows.
Three months ended December 31, 2021 | $ | 83 |
2022 | 327 |
2023 | 310 |
2024 | 261 |
2025 | 209 |
Thereafter | 443 |
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 |
The Company had $63 million of finance lease liabilities recognized in the consolidated balance sheets as of September 30, 2021 and December 31, 2020 included within accounts payable and accrued liabilities and other long-term liabilities. The related finance lease right-of-use assets are recorded in property, plant and equipment, net. The Company’s finance leases were not considered material for further supplemental lease disclosures.

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 + Details
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