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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2022
Fair Value Disclosures [Abstract]  
Fair Value Measurement Inputs and Valuation Techniques
The following table presents the range and weighted-average pull-through rates used in determining the fair value of IRLCs as of the dates presented:
September 30, 2022December 31, 2021
Range
46% - 100%
42% - 100%
Weighted-average87%85%
Summary of Balances of Cash Equivalents and Investments
The following tables present the balances of assets (liabilities) measured at fair value on a recurring basis, by level within the fair value hierarchy, as of the dates presented (in millions):
 September 30, 2022
TotalLevel 1Level 2Level 3
Cash equivalents:
Money market funds$1,820 $1,820 $— $— 
Short-term investments:
U.S. government agency securities1,353 — 1,353 — 
Corporate bonds118 — 118 — 
Treasury bills45 — 45 — 
Warrant— — 
Mortgage origination-related:
Mortgage loans held for sale49 — 49 — 
IRLCs(1)— — (1)
Forward contracts - other current assets— — 
        Total$3,391 $1,820 $1,568 $
 December 31, 2021
 TotalLevel 1Level 2Level 3
Cash equivalents:
Money market funds$2,132 $2,132 $— $— 
Short-term investments:
U.S. government agency securities471 — 471 — 
Corporate bonds33 — 33 — 
Commercial paper10 — 10 — 
Mortgage origination-related:
Mortgage loans held for sale107 — 107 — 
IRLCs— — 
Total$2,758 $2,132 $621 $
Schedule of Changes in IRLCs
The following table presents the changes in our IRLCs for the periods presented (in millions):
Three Months Ended
September 30,
Nine Months Ended
September 30,
2022202120222021
Balance, beginning of the period$$$$12 
Issuances23 12 58 
Transfers(4)(23)(15)(64)
Fair value changes recognized in earnings(1)(3)
Balance, end of period$(1)$$(1)$