Long-term Debt (Summary of Long-Term Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Long-term debt	$ 2,815,938	$ 2,841,250
Unamortized discount	(15,246)	(18,718)
Unamortized deferred financing costs	(7,413)	(10,079)
Long-term debt, net	2,793,279	2,812,453
Current portion of long-term debt	459,063	33,750
Noncurrent portion of long-term debt	$ 2,334,216	$ 2,778,703
Senior Notes | 5.00% Notes due April 2024
Debt Instrument [Line Items]
Interest rate	5.00%	5.00%
Long-term debt	$ 400,000	$ 400,000
Senior Notes | 4.75% Notes due August 2025
Debt Instrument [Line Items]
Interest rate	4.75%	4.75%
Long-term debt	$ 800,000	$ 800,000
Senior Notes | 4.25% Notes due February 2029
Debt Instrument [Line Items]
Interest rate	4.25%	4.25%
Long-term debt	$ 1,000,000	$ 1,000,000
Secured debt | Term Loan A Facility
Debt Instrument [Line Items]
Long-term debt	$ 615,938	$ 641,250