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Commitments (Tables)
12 Months Ended
Jun. 30, 2017
Commitments Disclosure [Abstract]  
Future Minimum Lease Payments for Operating Leases
June 30, 2017 (lease payments are shown net of sublease income):
Fiscal Years Ending
 
Operating Leases
(Dollars in millions)
 
 
2018
 
$
19

2019
 
15

2020
 
11

2021
 
9

2022
 
6

Thereafter
 
75

 
 
$
135