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Restructuring and Employee Severance Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Restructuring Cost and Reserve [Line Items]    
Restructuring Costs $ 25  
Severance Costs 20 $ 29
Facility Exit and Other Costs 10 3
Enterprise Wide Cost Saving Measures [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring Costs $ 20 $ 26