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Supplemental Cash Flow Information Statement - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Other Significant Noncash Transactions [Line Items]        
Capital Expenditures Incurred but Not yet Paid     $ 953 $ 568
Noncash or Part Noncash Acquisition, Payables Assumed $ 35 $ 47