Financial Instruments (Tables)

6 Months Ended

Sep. 30, 2016

Short-term investments consisted of the following as of September 30, 2016 and March 31, 2016 (in millions):



	As of September 30, 2016								As of March 31, 2016
	Cost or Amortized Cost		Gross Unrealized				Fair Value		Cost or Amortized Cost		Gross Unrealized				Fair Value
	Cost or Amortized Cost		Gains		Losses		Fair Value		Cost or Amortized Cost		Gains		Losses		Fair Value
Corporate bonds	$	738	$	1	$	—	$	739	$	620	$	1	$	—	$	621
U.S. Treasury securities	378		1		—		379		389		1		—		390
U.S. agency securities	154		—		—		154		167		—		—		167
Commercial paper	79		—		—		79		50		—		—		50
Foreign government securities	115		—		—		115		113		—		—		113
Asset-backed securities	54		—		—		54		—		—		—		—
Short-term investments	$	1,518	$	2	$	—	$	1,520	$	1,339	$	2	$	—	$	1,341

Fair Value Of Short-Term Investments By Stated Maturity Date Schedule

The following table summarizes the amortized cost and fair value of our short-term investments, classified by stated maturity as of September 30, 2016 and March 31, 2016 (in millions):



	As of September 30, 2016				As of March 31, 2016
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Short-term investments
Due in 1 year or less	$	749	$	749	$	571	$	571
Due in 1-2 years	415		416		461		462
Due in 2-3 years	295		296		295		296
Due in 3-4 years	59		59		12		12
Short-term investments	$	1,518	$	1,520	$	1,339	$	1,341