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Cash, Cash Equivalents and Marketable Securities (Tables) | 9 Months Ended
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Sep. 30, 2023
Cash, Cash Equivalents and Marketable Securities [Abstract] |
Schedule of Amortized Cost, Gross Unrealized Gains and Losses and Fair Value of Our Cash, Cash Equivalents and Marketable Securities Considered as Available for Sale by Type of Securities | The following table summarizes the amortized cost, gross unrealized gains and losses and the fair value of our cash, cash equivalents and marketable securities, all of which are considered available for sale, by type of securities (in millions):
Types of securities as of September 30, 2023 |  | Amortized Cost |  | Unrealized Gain |  | Unrealized Loss |  | Fair Value
Money market funds |  | $ | 110 |  |  | $ | — |  |  | $ | — |  |  | $ | 110 |
U.S. treasury securities |  | 246 |  |  | — |  |  | (1) |  |  | 245 |
Corporate securities and commercial paper |  | 493 |  |  | — |  |  | (2) |  |  | 491 |
U.S. government agency securities |  | 96 |  |  | — |  |  | — |  |  | 96 |
Certificate of deposit |  | 8 |  |  | — |  |  | — |  |  | 8 |
Total cash, cash equivalents and marketable securities |  | $ | 953 |  |  | $ | — |  |  | $ | (3) |  |  | $ | 950 |
Types of securities as of December 31, 2022 |  | Amortized Cost |  | Unrealized Gain |  | Unrealized Loss |  | Fair Value
Money market funds |  | $ | 169 |  |  | $ | — |  |  | $ | — |  |  | $ | 169 |
U.S. treasury securities |  | 317 |  |  | — |  |  | (3) |  |  | 314 |
Corporate securities and commercial paper |  | 635 |  |  | — |  |  | (4) |  |  | 631 |
U.S. government agency securities |  | 20 |  |  | — |  |  | — |  |  | 20 |
Certificate of deposit |  | 4 |  |  | — |  |  | — |  |  | 4 |
Total cash, cash equivalents and marketable securities |  | $ | 1,145 |  |  | $ | — |  |  | $ | (7) |  |  | $ | 1,138 |
Schedule of Fair Values of Our Cash, Cash Equivalents and Marketable Securities by Location in Condensed Consolidated Balance Sheets and Contractual Maturity | The following table summarizes the fair values of our cash, cash equivalents and marketable securities by location in the Condensed Consolidated Balance Sheets and contractual maturity (in millions):
Location in Condensed Consolidated Balance Sheets |  | Contractual Maturity |  | September 30, 2023 |  | December 31, 2022
Cash and cash equivalents |  | - |  | $ | 184 |  |  | $ | 206 |
Marketable securities |  | Within one year |  | 615 |  |  | 803 |
Long-term marketable securities |  | Between one and three years |  | 151 |  |  | 129 |
Total cash, cash equivalents and marketable securities |  |  |  | $ | 950 |  |  | $ | 1,138 |
Reconciliation of Cash, Cash Equivalents and Restricted Cash | The following table provides a reconciliation of cash, cash equivalents, and restricted cash within the Condensed Consolidated Balance Sheets to the total shown in the Condensed Consolidated Statements of Cash Flows (in millions):
| September 30,
| 2023 |  | 2022
Cash and cash equivalents | $ | 184 |  |  | $ | 218 |
Restricted cash (included in Other noncurrent assets) | 3 |  |  | 3 |
Total cash, cash equivalents and restricted cash | $ | 187 |  |  | $ | 221 |
Schedule of Cash and Cash Equivalents | The following table provides a reconciliation of cash, cash equivalents, and restricted cash within the Condensed Consolidated Balance Sheets to the total shown in the Condensed Consolidated Statements of Cash Flows (in millions):
| September 30,
| 2023 |  | 2022
Cash and cash equivalents | $ | 184 |  |  | $ | 218 |
Restricted cash (included in Other noncurrent assets) | 3 |  |  | 3 |
Total cash, cash equivalents and restricted cash | $ | 187 |  |  | $ | 221 |

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