Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
Long-term Debt - Summary of Components of Senior Notes (Details) - Senior unsecured notes - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Principal $ 1,275,000,000 $ 500,000,000
Accrued interest 18,000,000 13,000,000
Unamortized premium 2,000,000 7,000,000
Less: Unamortized financing costs (16,000,000) (8,000,000)
Carrying value of convertible notes $ 1,279,000,000 $ 512,000,000