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Basis of Presentation and Summary of Significant Accounting Policies Loss Contingencies (Details) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021
Loss Contingencies [Line Items] |  |  |
Gain (Loss) Related to Litigation Settlement | $ 302 | $ (109) | $ (1,129)

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