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Basis of Presentation and Summary of Significant Accounting Policies (Narrative, Goodwill and Other Intangible Assets) (Details)
$ in Millions
12 Months Ended
Jun. 30, 2021
USD ($)
segment
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Goodwill and Intangible Assets [Line Items]      
Number of Operating Segments | segment 2    
Goodwill, Impairment Loss | $ $ 0 $ 0 $ 0
Minimum      
Goodwill and Intangible Assets [Line Items]      
Discount Rate, fair value inputs 8.50%    
Maximum      
Goodwill and Intangible Assets [Line Items]      
Discount Rate, fair value inputs 11.50%