Financing Activities - Interest Expense (Details) - Convertible Debt - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Debt Instrument [Line Items]
Non-cash amortization of debt issuance costs	$ 3	$ 3
Contractual coupon interest	5	5
Total interest expense	$ 8	$ 8