Segment Information - Revenues and Intersegment Revenues (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Total intersegment revenues	$ (3,648)	$ (3,234)	$ (2,826)
Corporate & Eliminations
Segment Reporting Information [Line Items]
Total intersegment revenues	14	22	26
Corporate & Eliminations \| ASC
Segment Reporting Information [Line Items]
Total intersegment revenues	12	21	25
Corporate & Eliminations \| IMS
Segment Reporting Information [Line Items]
Total intersegment revenues	$ 2	$ 1	$ 1

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details