Restructuring Charges (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended	24 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2025	Dec. 31, 2022
Restructuring Charges [Abstract]
Restructuring and related activities, initiation date		Dec. 31, 2024
Workforce reduction percentage		10.00%
Severance costs	$ 12	$ 27	$ 0
Restructuring Charges	$ 12	$ 27	0	$ 39
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]	Costs and Expenses	Costs and Expenses
Remained restructuring accrued	$ 1	$ 19	$ 0	$ 1	$ 0

Date the restructuring activities were initiated or are expected to be initiated, in YYYY-MM-DD format.

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The number of positions eliminated during the period as a percentage of total positions eliminated during the period in connection with the restructuring plan(s).

+ References

No definition available.

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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Indicates line item in statement of income or comprehensive income that includes restructuring charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

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