Acquisitions (Details) $ in Millions	9 Months Ended	12 Months Ended
Sep. 30, 2025 USD ($) business	Dec. 31, 2024 USD ($) business
Business Combination
Business combination, recognized identifiable assets acquired and liabilities assumed, goodwill	$ 17,823	$ 17,260
2025 Business Combinations
Business Combination
Number of businesses acquired \| business	2
Total cash consideration, net of cash acquired	$ 587
Payments to acquire businesses	572
Estimated fair value of contingent consideration	15
Business combination, recognized identifiable assets acquired and liabilities assumed, goodwill	393
2025 Business Combinations \| Customer Relationships
Business Combination
Business combination, recognized identifiable assets acquired and liabilities assumed, goodwill	163
2025 Business Combinations \| Software Assets
Business Combination
Business combination, recognized identifiable assets acquired and liabilities assumed, goodwill	85
2025 Business Combinations \| Trademarks
Business Combination
Business combination, recognized identifiable assets acquired and liabilities assumed, goodwill	$ 8
2024 Business Combinations
Business Combination
Number of businesses acquired \| business	1	3
Total cash consideration, net of cash acquired		$ 515
Business combination, recognized identifiable assets acquired and liabilities assumed, goodwill	$ 345
2024 Business Combinations \| Customer Relationships
Business Combination
Business combination, recognized identifiable assets acquired and liabilities assumed, goodwill	87
2024 Business Combinations \| Software Assets
Business Combination
Business combination, recognized identifiable assets acquired and liabilities assumed, goodwill	$ 139

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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