Financial Instruments (Tables)

3 Months Ended

Jun. 30, 2021

Financial Instruments [Abstract]

Fair Value Of Short-Term Investments

Short-term investments consisted of the following as of June 30, 2021 and March 31, 2021 (in millions):

	As of June 30, 2021								As of March 31, 2021
	Cost or Amortized Cost		Gross Unrealized				Fair Value		Cost or Amortized Cost		Gross Unrealized				Fair Value
			Gains		Losses						Gains		Losses
Corporate bonds	$	335	$	—	$	—	$	335	$	372	$	—	$	—	$	372
U.S. Treasury securities	199		1		—		200		374		1		—		375
U.S. agency securities	3		—		—		3		3		—		—		3
Commercial paper	126		—		—		126		136		—		—		136
Foreign government securities	63		—		—		63		67		—		—		67
Asset-backed securities	117		—		—		117		112		—		—		112
Certificates of deposit	37		—		—		37		41		—		—		41
Short-term investments	$	880	$	1	$	—	$	881	$	1,105	$	1	$	—	$	1,106

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 June 30, 2021 and March 31, 2021 (in millions):

	As of June 30, 2021				As of March 31, 2021
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Short-term investments
Due within 1 year	$	636	$	637	$	895	$	896
Due 1 year through 5 years	237		237		203		203
Due after 5 years	7		7		7		7
Short-term investments	$	880	$	881	$	1,105	$	1,106