Annual report pursuant to Section 13 and 15(d)

Debt - Interest Rate Swaps (Details)

v3.19.3.a.u2
Debt - Interest Rate Swaps (Details) - USD ($)
Feb. 29, 2020
Dec. 31, 2019
Oct. 31, 2019
Dec. 31, 2018
February 15, 2021        
Debt Instrument [Line Items]        
Derivative, notional amount   $ 0   $ 600,000,000
May 15, 2022        
Debt Instrument [Line Items]        
Derivative, notional amount   500,000,000   500,000,000
February 15, 2024        
Debt Instrument [Line Items]        
Derivative, notional amount   1,000,000,000   1,000,000,000
January 15, 2025        
Debt Instrument [Line Items]        
Derivative, notional amount   600,000,000   600,000,000
Interest rate swap        
Debt Instrument [Line Items]        
Derivative, notional amount   $ 2,100,000,000 $ 600,000,000 $ 2,700,000,000
Swap average, variable interest rate   3.44%    
Weighted average interest rate, interest rate swap agreements   5.30%    
Interest rate swap | Subsequent Event        
Debt Instrument [Line Items]        
Derivative, notional amount $ 2,100,000,000      
Senior Notes | $1,400 million 5.625% Senior notes, due February 15, 2021        
Debt Instrument [Line Items]        
Debt redemption amount     $ 1,400,000,000  
Interest rate stated, percentage     5.625% 5.625%