v3.22.0.1
Fair Value Measurements
12 Months Ended
Dec. 31, 2021
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
The following table presents our fair value hierarchy for our assets measured at fair value on a recurring basis as of December 31, 2021 (in millions): 
Level 1Level 2Total
Cash equivalents:
Money market funds$706 $— $706 
Commercial paper— 110 110 
Corporate notes and bonds— 28 28 
Certificates of deposit— 
Deposits235 — 235 
Marketable securities:
Commercial paper— 528 528 
Corporate notes and bonds— 2,412 2,412 
Certificates of deposit— 28 28 
Mortgage and asset backed securities— 98 98 
U.S. government and agency securities— 140 140 
Total$941 $3,352 $4,293 
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 1Level 2Total
Cash equivalents:
Money market funds$1,305 $— $1,305 
U.S. government and agency securities— 
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 

We determine the fair value of our security holdings based on pricing from our service providers and market prices from industry-standard independent data providers. Such market prices may be quoted prices in active markets for identical assets (Level 1 inputs) or pricing determined using inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs).

Our equity investments in privately-held companies are not included in the table above and are discussed in Note 3. See Note 8 for the fair value measurement of our derivative contracts and Note 11 for the fair value measurement of our long-term debt, which are also not included in the table above.