Financial Instruments (Tables)

6 Months Ended

Sep. 30, 2020

Short-term investments consisted of the following as of September 30, 2020 and March 31, 2020 (in millions):


	As of September 30, 2020								As of March 31, 2020
	Cost or Amortized Cost		Gross Unrealized				Fair Value		Cost or Amortized Cost		Gross Unrealized				Fair Value
			Gains		Losses						Gains		Losses
Corporate bonds	$	513	$	1	$	—	$	514	$	684	$	1	$	(4)	$	681
U.S. Treasury securities	724		2		—		726		530		4		—		534
U.S. agency securities	5		—		—		5		8		—		—		8
Commercial paper	358		—		—		358		377		—		—		377
Foreign government securities	75		—		—		75		42		—		—		42
Asset-backed securities	237		2		—		239		273		—		(4)		269
Certificates of deposit	55		—		—		55		56		—		—		56
Short-term investments	$	1,967	$	5	$	—	$	1,972	$	1,970	$	5	$	(8)	$	1,967

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, 2020 and March 31, 2020 (in millions):


	As of September 30, 2020				As of March 31, 2020
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Short-term investments
Due within 1 year	$	1,600	$	1,603	$	1,568	$	1,567
Due 1 year through 5 years	360		362		395		393
Due after 5 years	7		7		7		7
Short-term investments	$	1,967	$	1,972	$	1,970	$	1,967