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Available-for-Sale Securities (Tables)
12 Months Ended
Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract]  
Available-for-sale Securities
We held the following investments in marketable securities at fair value at June 30:
(in millions)
2016
 
2015
Current available-for-sale securities:
 
 
 
Commercial paper
$

 
$
4

Treasury bills
3

 
12

International bonds
2

 
2

Corporate bonds
58

 
34

U.S. agency bonds
6

 
5

Asset-backed securities
28

 
8

International equity securities
2

 

U.S. agency mortgage-backed securities
14

 
26

Total current available-for-sale securities
113

 
91

Long-term available-for-sale securities:
 
 
 
Treasury bills
10

 

International bonds
1

 

Corporate bonds
36

 
33

U.S. agency bonds
9

 
18

Asset-backed securities
17

 
41

U.S. agency mortgage-backed securities
14

 
10

Total long-term available-for-sale securities
87

 
102

Total available-for-sale securities
$
200

 
$
193