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Leases (Narrative) (Details)
$ in Millions
12 Months Ended
Jun. 30, 2020
USD ($)
Option
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Lessor Lease Description [Line Items]      
Operating lease expense   $ 100 $ 105
Total lease income $ 55    
Production and Office Space      
Lessor Lease Description [Line Items]      
Initial term of lease arrangements 7 years    
Lease arrangements renewal term 5 years    
Number of renewal options | Option 2    
Annual lease payments to be received $ 50