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Derivatives - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Apr. 30, 2018
Sep. 30, 2017
Mar. 31, 2017
Derivative [Line Items]            
Hedging ineffectiveness recorded in earnings $ 0 $ 0        
Interest Rate Swap            
Derivative [Line Items]            
Notional amount $ 750,000,000 $ 750,000,000     $ 750,000,000 $ 750,000,000
Interest Rate Swap, Floating Term Loan B, 2019 | Cash Flow Hedging            
Derivative [Line Items]            
Notional amount       $ 600,000,000    
Interest Rate Swap, Floating Term Loan B, 2020 | Cash Flow Hedging            
Derivative [Line Items]            
Notional amount     $ 150,000,000 300,000,000    
Interest Rate Swap, Floating Term Loan B, 2021 | Cash Flow Hedging            
Derivative [Line Items]            
Notional amount       $ 450,000,000