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Information Concerning Guarantor and Non-Guarantor Subsidiaries - General Information (Details)
6 Months Ended
Jun. 30, 2020
USD ($)
entity
Condensed Financial Statements, Captions [Line Items]  
Number of wholly-owned subsidiaries | entity 4
Ownership percentage in subsidiaries (as a percent) 100.00%
$400 Million 5% Senior Notes [Member]  
Condensed Financial Statements, Captions [Line Items]  
Face amount $ 400,000,000.0
Senior Notes [Member] | $400 Million 5% Senior Notes [Member]  
Condensed Financial Statements, Captions [Line Items]  
Face amount $ 400,000,000
Stated interest rate (as a percent) 5.00%
Senior Notes [Member] | $700 Million 4.75% Senior Notes  
Condensed Financial Statements, Captions [Line Items]  
Face amount $ 700,000,000
Stated interest rate (as a percent) 4.75%