Interest And Other Income (Expense), Net (Tables)
 12 Months Ended
Mar. 31, 2015
Interest and Other Income [Abstract]  
Schedule Of Interest And Other Income (Expense), Net
Interest and other income (expense), net, for the fiscal years ended March 31, 2015, 2014 and 2013 consisted of (in millions): 
 
Year Ended March 31,
 
2015
 
2014
 
2013
Interest expense
$
(31
)
 
$
(30
)
 
$
(29
)
Interest income
10

 
5

 
6

Net gain (loss) on foreign currency transactions
(62
)
 
4

 
2

Net gain (loss) on foreign currency forward contracts
59

 
(5
)
 
(2
)
Other income, net
1

 
—

 
2

Interest and other income (expense), net
$
(23
)
 
$
(26
)
 
$
(21
)