Cash and Cash Equivalents and Restricted Cash and Cash Equivalents - PAC - Narrative (Details) $ in Millions	Jun. 30, 2026 USD ($)
PAC \| U.S. government obligations \| Balance Sheet Location [Axis]: us-gaap:OtherAssetsCurrent
Condensed Cash Flow Statements, Captions [Line Items]
Debt securities	$ 245

Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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+ Details