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Segment and Other Supplemental Information - Narrative (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) segment | Sep. 30, 2024 USD ($)
Segment Reporting [Abstract] |  |  |  |
Number of operating segments | segment |  |  | 2 |
Operating Segments | Product Sales |  |  |  |
Segment Reporting Information |  |  |  |
Product costs | $ 60 | $ 55 | $ 183 | $ 164
Depreciation expense | 18 | 19 | 53 | 60
Operating Segments | Consulting Services |  |  |  |
Segment Reporting Information |  |  |  |
Cost of consulting services includes payroll and benefit costs | $ 29 | $ 35 | $ 94 | $ 106

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