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Available-for-Sale Securities (Tables)
6 Months Ended
Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]  
Available-for-sale Securities
We held the following investments in marketable securities at fair value at:
(in millions)
December 31, 2015
 
June 30, 2015
Current available-for-sale securities:
 
 
 
Commercial paper
$
2

 
$
4

Treasury bills
2

 
12

International bonds

 
2

Corporate bonds
53

 
34

U.S. agency bonds
1

 
5

Asset-backed securities
28

 
8

International equity securities
2

 

U.S. agency mortgage-backed securities
16

 
26

Total current available-for-sale securities
104

 
91

 
 
 
 
Long-term available-for-sale securities:
 
 
 
International bonds
1

 

Corporate bonds
29

 
33

U.S. agency bonds
31

 
18

Asset-backed securities
20

 
41

U.S. agency mortgage-backed securities
13

 
10

Total long-term available-for-sale securities
94

 
102

Total available-for-sale securities
$
198

 
$
193