Borrowings - Interest on Debt (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Interest on Debt
Interest capitalized	$ 4	$ 5
Total interest paid and accrued	1,774	1,730
Income Statement Location [Axis]: us-gaap:CostOfRevenue
Interest on Debt
Interest expense	320	268
Income Statement Location [Axis]: us-gaap:InterestExpense
Interest on Debt
Interest expense	$ 1,451	$ 1,457