| Fair Value Measurements and Financial Instruments |
Fair Value Measurements and Financial Instruments The following table summarizes the Company’s financial assets and liabilities measured at fair value on a recurring basis (in millions):
| | | | | | | | | | | | | | | | December 31, 2025 | | Level 1 | Level 2 | Level 3 | Total | | Assets | | | | | | Cash and cash equivalents: | | | | | | Money market funds | $ | 901 | | $ | — | | $ | — | | $ | 901 | | | | | | | | Commercial paper | — | | 98 | | — | | 98 | | | Government bonds | — | | 57 | | — | | 57 | | | Corporate debt securities | — | | 7 | | — | | 7 | | | Total cash and cash equivalents | 901 | | 162 | | — | | 1,063 | | | Short-term investments: | | | | | | Corporate debt securities | — | | 2,288 | | — | | 2,288 | | | Mortgage-backed and asset-backed securities | — | | 441 | | — | | 441 | | | Government bonds | — | | 262 | | — | | 262 | | | Commercial paper | — | | 182 | | — | | 182 | | | Certificates of deposit | — | | 149 | | — | | 149 | | | | | | | | Total short-term investments | — | | 3,322 | | — | | 3,322 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Funds receivable and amounts held on behalf of customers: | | | | | | Money market funds | 2,164 | | — | | — | | 2,164 | | | | | | | | Prepaids and other current assets: | | | | | | Foreign exchange derivative assets | — | | 20 | | — | | 20 | | | | | | | | | | | | | | | | | | Total assets at fair value | $ | 3,065 | | $ | 3,504 | | $ | — | | $ | 6,569 | | | Liabilities | | | | | | Accrued expenses, accounts payable, and other current liabilities: | | | | | | Foreign exchange derivative liabilities | $ | — | | $ | 68 | | $ | — | | $ | 68 | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | March 31, 2026 | | Level 1 | Level 2 | Level 3 | Total | | Assets | | | | | | Cash and cash equivalents: | | | | | | Money market funds | $ | 1,080 | | $ | — | | $ | — | | $ | 1,080 | | | Government bonds | — | | 155 | | — | | 155 | | | Commercial paper | — | | 126 | | — | | 126 | | | | | | | | Corporate debt securities | — | | 6 | | — | | 6 | | | Total cash and cash equivalents | 1,080 | | 287 | | — | | 1,367 | | | Short-term investments: | | | | | | Corporate debt securities | — | | 2,698 | | — | | 2,698 | | | Mortgage-backed and asset-backed securities | — | | 507 | | — | | 507 | | | Government bonds | — | | 318 | | — | | 318 | | | Commercial paper | — | | 185 | | — | | 185 | | | Certificates of deposit | — | | 128 | | — | | 128 | | | | | | | | Total short-term investments | — | | 3,836 | | — | | 3,836 | | | Funds receivable and amounts held on behalf of customers: | | | | | | Money market funds | 2,386 | | — | | — | | 2,386 | | | | | | | | Prepaids and other current assets: | | | | | | Foreign exchange derivative assets | — | | 97 | | — | | 97 | | | | | | | | | | | | | | | | | | | | | | | Total assets at fair value | $ | 3,466 | | $ | 4,220 | | $ | — | | $ | 7,686 | | | Liabilities | | | | | | Accrued expenses, accounts payable, and other current liabilities: | | | | | | Foreign exchange derivative liabilities | $ | — | | $ | 43 | | $ | — | | $ | 43 | | | | | | | | | | | | | | | | |
As of March 31, 2026, the estimated fair value of the $2.5 billion aggregate principal amount of unsecured senior notes issued in March 2026 (“Senior Notes”) was $2.5 billion, determined using quoted market prices for similar instruments in active markets (Level 2). See Note 7, Debt, for additional information.
There were no unrealized losses included in other comprehensive income (loss) relating to investments measured at fair value for which the Company has utilized Level 3 inputs to determine fair value during the three months ended March 31, 2025 and 2026.
There were no transfers of financial instruments into or out of Level 3 during the three months ended March 31, 2025 and 2026.
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