Quarterly Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Summary of Unaudited Quarterly Results of Operations
Revenues	$ 1,262,822	$ 1,266,133	$ 1,320,106	$ 1,272,245	$ 1,241,243	$ 1,236,379	$ 1,125,912	$ 1,096,965	$ 5,121,306	$ 4,700,499	$ 4,316,641
Net income (loss) attributable to common stockholders	$ 224,324	$ 589,876	$ 137,762	$ 280,470	$ 101,763	$ 64,384	$ 154,432	$ 437,671	$ 1,232,432	$ 758,250	$ 463,595
Net income (loss) attributable to common stockholders per share:
Basic (in USD per share)	$ 0.55	$ 1.46	$ 0.34	$ 0.72	$ 0.27	$ 0.17	$ 0.42	$ 1.18	$ 3.07	$ 2.03	$ 1.26
Diluted (in USD per share)	$ 0.55	$ 1.45	$ 0.34	$ 0.71	$ 0.27	$ 0.17	$ 0.41	$ 1.17	$ 3.05	$ 2.02	$ 1.26