Equity Investments - Summarized Combined Financial Data For Equity Investments - Income Statement Table (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity Method Investments and Joint Ventures [Abstract]
Revenues	$ 1,687,116	$ 1,300,921	$ 877,020
Operating income	1,107,664	876,910	542,390
Net income	$ 1,108,173	$ 874,587	$ 540,538