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Goodwill - Narrative (Details)
12 Months Ended
Jun. 30, 2019
USD ($)
triggering_event
Jun. 30, 2018
triggering_event
Jun. 30, 2017
triggering_event
Goodwill and Intangible Assets Disclosure [Abstract]      
Impairment loss recognized | $ $ 0    
Number of triggering events indicating goodwill impairment occurred | triggering_event 0 0 0