Goodwill and Other Identifiable Intangible Assets (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Line Items]
Goodwill, impaired, accumulated impairment loss	$ 158	$ 158
Goodwill	6,149	6,149	$ 5,690	$ 6,115
Impairment of intangible assets, indefinite-lived (excluding goodwill)		2
Impairment and other-related charges, net		24	146	160
Aggregate amortization expense of identifiable intangible assets		$ 125	$ 132	154
Accelerated amortization expense	$ 6
Traffic Solutions
Goodwill [Line Items]
Goodwill, impairment loss				$ 158
Goodwill, Impairment Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]				Impairment and other-related charges, net