Borrowings - Interest on Debt (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Interest on Debt
Interest capitalized	$ 2	$ 4
Total interest paid and accrued	1,177	1,141
Income Statement Location [Axis]: us-gaap:CostOfRevenue
Interest on Debt
Interest expense	216	173
Income Statement Location [Axis]: us-gaap:InterestExpense
Interest on Debt
Interest expense	$ 959	$ 965