Segments - Revenue Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Segment Information
Revenue	$ 17,103	$ 16,331	$ 50,182	$ 47,849
Operating Segments
Segment Information
Revenue	17,038	16,292	50,017	47,782
Other
Segment Information
Other revenue	$ 66	$ 38	$ 165	$ 68