XML 200 R112.htm IDEA: XBRL DOCUMENT v3.22.2.2
Commitments and Contingencies - Leases (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Leases      
CT and QTE outstanding leaseback obligation   $ 25  
Estimated future decommissioning cost [1] $ 7,162 $ 7,002 $ 6,785
[1]
(1) Includes $275 million and $266 million at September 30, 2022 and 2021, respectively, in Current liabilities.
(2) Settlements include the change in asset retirement obligation project accruals included in Accounts payable and accrued liabilities of $20 million.