Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | $ 691 | $ 1,280 |
Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 671 | 1,231 |
Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 20 | 49 |
Fair Value, Recurring | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total | 691 | 1,280 |
Fair Value, Recurring | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 671 | 1,231 |
Fair Value, Recurring | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 20 | 49 |
Money market funds | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 570 | 1,002 |
Money market funds | Fair Value, Recurring | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 570 | 1,002 |
U.S. government and government agency debt securities | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 101 | 229 |
U.S. government and government agency debt securities | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 18 | 47 |
U.S. government and government agency debt securities | Fair Value, Recurring | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 101 | 229 |
U.S. government and government agency debt securities | Fair Value, Recurring | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 18 | 47 |
Corporate debt securities | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 2 | 2 |
Corporate debt securities | Fair Value, Recurring | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 2 | 2 |
Level 1 | Fair Value, Recurring | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total | 570 | 1,002 |
Level 1 | Fair Value, Recurring | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 570 | 1,002 |
Level 1 | Fair Value, Recurring | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 0 | 0 |
Level 1 | Money market funds | Fair Value, Recurring | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 570 | 1,002 |
Level 1 | U.S. government and government agency debt securities | Fair Value, Recurring | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 0 | 0 |
Level 1 | U.S. government and government agency debt securities | Fair Value, Recurring | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 0 | 0 |
Level 1 | Corporate debt securities | Fair Value, Recurring | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 0 | 0 |
Level 2 | Fair Value, Recurring | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total | 121 | 278 |
Level 2 | Fair Value, Recurring | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 101 | 229 |
Level 2 | Fair Value, Recurring | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 20 | 49 |
Level 2 | Money market funds | Fair Value, Recurring | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 0 | 0 |
Level 2 | U.S. government and government agency debt securities | Fair Value, Recurring | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 101 | 229 |
Level 2 | U.S. government and government agency debt securities | Fair Value, Recurring | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 18 | 47 |
Level 2 | Corporate debt securities | Fair Value, Recurring | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 2 | 2 |
Level 3 | Fair Value, Recurring | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total | 0 | 0 |
Level 3 | Fair Value, Recurring | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 0 | 0 |
Level 3 | Fair Value, Recurring | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 0 | 0 |
Level 3 | Money market funds | Fair Value, Recurring | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 0 | 0 |
Level 3 | U.S. government and government agency debt securities | Fair Value, Recurring | Cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 0 | 0 |
Level 3 | U.S. government and government agency debt securities | Fair Value, Recurring | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | 0 | 0 |
Level 3 | Corporate debt securities | Fair Value, Recurring | Short-term marketable securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt securities, available-for-sale | $ 0 | $ 0 |