Quarterly report pursuant to Section 13 or 15(d)

Long-term Debt - Summary of Components of Convertible Notes (Details)

v3.21.1
Long-term Debt - Summary of Components of Convertible Notes (Details) - 4.125% Convertible senior notes due september 1, 2022 - Convertible senior notes - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Principal $ 294 $ 294
Accrued interest 1 2
Less: Unamortized financing costs (5) (5)
Carrying value of Convertible Senior Notes $ 290 $ 291