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Basis of Presentation and Summary of Significant Accounting Policies (Assets Held for Sale) (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Accounting Policies [Abstract]      
Proceeds from divestitures, net of cash sold $ 923 $ 0 $ 0