Short-Term Borrowings and Long-Term Debt - Aggregate Annual Maturities of Long-Term Debt Obligations (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Long-term Debt, Fiscal Year Maturity [Abstract]
2022	$ 0
2023	0
2024	0
2025	349
2026	645
2027 and thereafter	1,576
Total	2,570	$ 844
Interest expense on debt	$ 48	$ 25	$ 35
Weighted average interest rate on short-term borrowings	20.00%	0.80%

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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