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Supplemental Balance Sheet Information - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Unpaid capital expenditures | $ 17 | $ 12 | $ 33

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- Definition Future cash outflow to pay for purchases of fixed assets that have occurred. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-3 + Details
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