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Summary of Significant Accounting Policies Cash, Cash Equivalents, and Restricted Cash (Tables)
3 Months Ended
Dec. 31, 2024
Cash and Cash Equivalents [Abstract]  
Schedule of Cash and Cash Equivalents
The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported on the Consolidated Balance Sheets and Consolidated Statements of Cash Flows:
Cash, Cash Equivalents, and Restricted Cash
(in millions)
 At December 31, 2024At September 30, 2024
Cash and cash equivalents$507 $502 
Restricted cash of variable interest entity25 — 
Restricted cash and cash equivalents included in Other long-term assets21 21 
Total cash, cash equivalents, and restricted cash$553 $523