Quarterly report pursuant to Section 13 or 15(d)

Long-term Debt - Summarized Terms of the Senior Unsecured Notes (Details)

v3.21.1
Long-term Debt - Summarized Terms of the Senior Unsecured Notes (Details) - Senior unsecured notes - USD ($)
3 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Principal $ 1,275,000,000 $ 1,275,000,000
2024 notes    
Debt Instrument [Line Items]    
Principal $ 500,000,000  
Stated Interest Rate 5.25%  
Proceeds from issuance of debt $ 157,000,000  
Proceeds from issuance of debt net of issuance cost $ 155,000,000  
Effective interest rate 4.13%  
Redemption price, percentage 40.00%  
2025 notes    
Debt Instrument [Line Items]    
Principal $ 400,000,000  
Stated Interest Rate 6.00%  
2030 notes    
Debt Instrument [Line Items]    
Principal $ 375,000,000  
Stated Interest Rate 3.75%  
Proceeds from issuance of debt $ 371,000,000  
Proceeds from issuance of debt net of issuance cost $ 367,000,000  
Redemption price, percentage 40.00%  
Yield to maturity 3.87%  
Offer share percentage 103.75%  
2024 notes issued at par    
Debt Instrument [Line Items]    
Principal $ 350,000,000  
2024 notes note issued above par    
Debt Instrument [Line Items]    
Principal $ 150,000,000