Borrowings - Interest on Debt (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Interest on Debt
Interest capitalized	$ 2	$ 2
Total interest paid and accrued	395	388
Cost of financing
Interest on Debt
Interest paid	82	106
Interest expense
Interest on Debt
Interest paid	$ 311	$ 280