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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2023
Jun. 30, 2022
Reconciliation of cash, cash equivalents and restricted cash and cash equivalents at end of period:    
Cash and cash equivalents $ 144 $ 894
Restricted cash and cash equivalents included in other current assets $ 43 $ 30
Restricted Cash and Cash Equivalents, Current, Statement of Financial Position [Extensible Enumeration] Other Assets, Current Other Assets, Current
Restricted cash and cash equivalents included in restricted funds $ 76 $ 69
Restricted Cash and Cash Equivalents, Noncurrent, Statement of Financial Position [Extensible Enumeration] Restricted Cash and Investments, Noncurrent Restricted Cash and Investments, Noncurrent
Cash, cash equivalents and restricted cash and cash equivalents at end of period $ 263 $ 993