Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Assets Measured at Fair Value on Recurring Basis

The following table presents our fair value hierarchy for our assets measured at fair value on a recurring basis as of September 30, 2021 (in millions): 

	Level 1		Level 2		Total
Cash equivalents:
Money market funds	$	563	$	—	$	563
Deposits	235		—		235
U.S. government and agency securities	—		38		38
Marketable securities:
Commercial paper	—		553		553
Corporate notes and bonds	—		2,264		2,264
Certificates of deposit	—		40		40
U.S. government and agency securities	—		97		97
Mortgage and asset backed securities	—		61		61
Total	$	798	$	3,053	$	3,851

The following table presents our fair value hierarchy for our assets measured at fair value on a recurring basis as of December 31, 2020 (in millions): 

	Level 1		Level 2		Total
Cash equivalents:
Money market funds	$	1,305	$	—	$	1,305
U.S. government and agency securities	—		2		2
Marketable securities:
Commercial paper	—		406		406
Corporate notes and bonds	—		2,308		2,308
Certificates of deposit	—		23		23
U.S. government and agency securities	—		146		146
Total	$	1,305	$	2,885	$	4,190