Supplemental Financial Information - Supplemental Disclosure of Cash-flow Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Supplemental disclosure of cash flow information
Cash paid for income taxes, net of refunds	$ 136	$ 123
Cash paid for the amount used to measure the operating lease liabilities	461	425
Operating lease assets obtained in exchange for lease obligations	652	829
Net increase to operating lease right-of-use assets resulting from remeasurements of lease obligations	325	168
Non-cash investing and financing activities
Increase in property and equipment-related accounts payable	$ 22	$ 51