Borrowings - Interest on Debt (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Interest on Debt
Interest capitalized	$ 2	$ 2
Total interest paid and accrued	775	774
Cost of financing
Interest on Debt
Interest paid	165	210
Interest expense
Interest on Debt
Interest paid	$ 607	$ 561