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Schedule of Long-term debt (Table) (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Long-term debt $ 3,321 $ 1,686
Less unamortized debt issuance costs (34) (19)
Senior Notes    
Debt Instrument [Line Items]    
Less unamortized debt issuance costs (20) (14)
Senior Notes | Senior notes due December 1, 2027, 3.483% [Member]    
Debt Instrument [Line Items]    
Long-term debt $ 600 $ 600
Debt Instrument, Interest Rate, Stated Percentage 3.483% 3.483%
Senior Notes | Senior notes due May 1, 2025, 3.844% [Member]    
Debt Instrument [Line Items]    
Long-term debt $ 500 $ 500
Debt Instrument, Interest Rate, Stated Percentage 3.844% 3.844%
Senior Notes | Senior notes due May 1, 2030, 4.200%    
Debt Instrument [Line Items]    
Long-term debt $ 500 $ 500
Debt Instrument, Interest Rate, Stated Percentage 4.20% 4.20%
Senior Notes | Senior notes due August 16, 2023, 0.670%    
Debt Instrument [Line Items]    
Long-term debt $ 400  
Debt Instrument, Interest Rate, Stated Percentage 0.67%  
Senior Notes | Senior notes due August 16, 2028, 2.043%    
Debt Instrument [Line Items]    
Long-term debt $ 600  
Debt Instrument, Interest Rate, Stated Percentage 2.043%  
Term Loan | Term loan due August 19, 2024    
Debt Instrument [Line Items]    
Long-term debt $ 650  
Bonds | Mississippi Economic Development Revenue Bonds Due May 1, 2024, 7.81%    
Debt Instrument [Line Items]    
Long-term debt $ 84 $ 84
Debt Instrument, Interest Rate, Stated Percentage 7.81% 7.81%
Bonds | Gulf Opportunity Zone Industrial Development Revenue Bonds Due December 1, 2028, 4.55%    
Debt Instrument [Line Items]    
Long-term debt $ 21 $ 21
Debt Instrument, Interest Rate, Stated Percentage 4.55% 4.55%