Long-term Debt and Interest Expense - Interest Costs (Details) - 0.250% convertible senior notes due 2025 - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Debt Instrument [Line Items]
Contractual coupon interest	$ 1	$ 1
Amortization of capitalized loan fees	1	1
Total interest expense on convertible notes	$ 2	$ 2

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

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Name:	us-gaap_InterestExpenseDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration