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Cash, Cash Equivalents and Marketable Securities - Schedule of Fair Values of Our Cash, Cash Equivalents and Marketable Securities by Location in Condensed Consolidated Balance Sheets and Contractual Maturity (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
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Cash, Cash Equivalents and Marketable Securities [Abstract] |  |
Cash and cash equivalents | $ 184 | $ 206
Marketable securities | 615 | 803
Long-term marketable securities | 151 | 129
Total cash, cash equivalents and marketable securities | $ 950 | $ 1,138

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