Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.1
Long-term Debt - Summary of Components of Senior Notes (Details) - Senior unsecured notes - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Principal $ 1,275 $ 1,275
Accrued interest 18 22
Unamortized premium 2 2
Less: Unamortized financing costs (15) (16)
Carrying value of Convertible Senior Notes $ 1,280 $ 1,283