Borrowings - Interest on Debt (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Interest on Debt
Interest capitalized	$ 1	$ 2
Total interest paid and accrued	585	544
Cost of financing
Interest on Debt
Interest expense	111	87
Interest expense
Interest on Debt
Interest expense	$ 473	$ 455