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Fair Value of Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2023
Fair Value Disclosures [Abstract] |
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis | Our assets and liabilities that were measured at fair value on a recurring basis were as follows (in millions):
| December 31, 2023 |  | December 31, 2022
| Fair Value |  | Level I |  | Level II |  | Level III |  | Fair Value |  | Level I |  | Level II |  | Level III
Money market funds | $ | 109 |  |  | $ | 109 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,188 |  |  | $ | 2,188 |  |  | $ | — |  |  | $ | — |
U.S. government securities | 5,136 |  |  | — |  |  | 5,136 |  |  | — |  |  | 894 |  |  | — |  |  | 894 |  |  | — |
Corporate debt securities | 480 |  |  | — |  |  | 480 |  |  | — |  |  | 885 |  |  | — |  |  | 885 |  |  | — |
Certificates of deposit and time deposits | 6,996 |  |  | — |  |  | 6,996 |  |  | — |  |  | 4,253 |  |  | — |  |  | 4,253 |  |  | — |
Commercial paper | 470 |  |  | — |  |  | 470 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total | $ | 13,191 |  |  | $ | 109 |  |  | $ | 13,082 |  |  | $ | — |  |  | $ | 8,220 |  |  | $ | 2,188 |  |  | $ | 6,032 |  |  | $ | — |
Unrealized Gain (Loss) on Investments | Our cash, cash equivalents and investments classified by security type as of December 31, 2023 and 2022 consisted of the following (in millions):
| December 31, 2023
| Adjusted Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  | Cash and Cash Equivalents |  | Short-Term Investments
Cash | $ | 15,903 |  |  | $ | — |  |  | $ | — |  |  | $ | 15,903 |  |  | $ | 15,903 |  |  | $ | — |
Money market funds | 109 |  |  | — |  |  | — |  |  | 109 |  |  | 109 |  |  | — |
U.S. government securities | 5,136 |  |  | 1 |  |  | (1) |  |  | 5,136 |  |  | 277 |  |  | 4,859 |
Corporate debt securities | 485 |  |  | 1 |  |  | (6) |  |  | 480 |  |  | — |  |  | 480 |
Certificates of deposit and time deposits | 6,995 |  |  | 1 |  |  | — |  |  | 6,996 |  |  | — |  |  | 6,996 |
Commercial paper | 470 |  |  | — |  |  | — |  |  | 470 |  |  | 109 |  |  | 361 |
Total cash, cash equivalents and short-term investments | $ | 29,098 |  |  | $ | 3 |  |  | $ | (7) |  |  | $ | 29,094 |  |  | $ | 16,398 |  |  | $ | 12,696 |
| December 31, 2022
| Adjusted Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  | Cash and Cash Equivalents |  | Short-Term Investments
Cash | $ | 13,965 |  |  | $ | — |  |  | $ | — |  |  | $ | 13,965 |  |  | $ | 13,965 |  |  | $ | — |
Money market funds | 2,188 |  |  | — |  |  | — |  |  | 2,188 |  |  | 2,188 |  |  | — |
U.S. government securities | 897 |  |  | — |  |  | (3) |  |  | 894 |  |  | — |  |  | 894 |
Corporate debt securities | 907 |  |  | — |  |  | (22) |  |  | 885 |  |  | — |  |  | 885 |
Certificates of deposit and time deposits | 4,252 |  |  | 1 |  |  | — |  |  | 4,253 |  |  | 100 |  |  | 4,153 |
Total cash, cash equivalents and short-term investments | $ | 22,209 |  |  | $ | 1 |  |  | $ | (25) |  |  | $ | 22,185 |  |  | $ | 16,253 |  |  | $ | 5,932 |
Summary of Fair Value of Marketable Securities by Contractual Maturities | The following table summarizes the fair value of our investments by stated contractual maturities as of December 31, 2023 (in millions):
Due in 1 year or less | $ | 12,374 |
Due in 1 year through 5 years | 297 |
Due in 5 years through 10 years | 25 |
Total | $ | 12,696 |
Schedule of Estimated Fair Values and Carrying Values | The following table presents the estimated fair values and the carrying values (in millions):
| December 31, 2023 |  | December 31, 2022
| Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
2024 Notes | $ | 37 |  |  | $ | 443 |  |  | $ | 37 |  |  | $ | 223 |
Digital assets, net | $ | 184 |  |  | $ | 487 |  |  | $ | 184 |  |  | $ | 191 |

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