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Revenue (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Disaggregation of Revenue [Line Items] |  |  |  |
Threshold percentage of total revenue |  |  | 2.00% |
Revenue recognized that was included in the contract liability balance at the beginning of the period | $ 187 | $ 75 | $ 698 | $ 529
Performance obligation satisfied in previous period | $ 20 | $ 13 | $ 64 | $ 74

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