Goodwill and Acquired Intangible Assets - Aggregate Amortization Expense for Acquired Intangible Assets (Details) - Amortization expense $ in Millions	12 Months Ended
Dec. 31, 2024 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Actual 2024	$ 3
2025	3
2026	3
2027	2
2028	1
2029	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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