Financial Instruments (Tables)

12 Months Ended

Mar. 31, 2021

Short-term investments consisted of the following as of March 31, 2021 and 2020 (in millions):


	As of March 31, 2021								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	$	372	$	—	$	—	$	372	$	684	$	1	$	(4)	$	681
U.S. Treasury securities	374		1		—		375		530		4		—		534
U.S. agency securities	3		—		—		3		8		—		—		8
Commercial paper	136		—		—		136		377		—		—		377
Foreign government securities	67		—		—		67		42		—		—		42
Asset-backed securities	112		—		—		112		273		—		(4)		269
Certificates of deposit	41		—		—		41		56		—		—		56
Short-term investments	$	1,105	$	1	$	—	$	1,106	$	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 March 31, 2021 and 2020 (in millions):


	As of March 31, 2021				As of March 31, 2020
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Short-term investments
Due within 1 year	$	895	$	896	$	1,568	$	1,567
Due 1 year through 5 years	203		203		395		393
Due after 5 years	7		7		7		7
Short-term investments	$	1,105	$	1,106	$	1,970	$	1,967