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Additional Financial Information (Supplemental Information) (Details) - USD ($)
$ in Millions
9 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Supplemental cash flows information    
Cash paid for interest $ (355) $ (39)
Cash paid for income taxes (75) 0
Supplemental information on acquisitions    
Fair value of assets acquired, excluding cash 773 0
Cash acquired 15 0
Liabilities assumed (53) 0
Noncontrolling interests (109) 0
Cash paid (626) 0
Fair value of equity instruments consideration $ 0 $ 0