Quarterly Selected Financial Data (Unaudited) (in thousands, except per share data) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Schedule of quarterly financial information

	First Quarter				Second Quarter				Third Quarter				Fourth Quarter
	2019		2018		2019		2018		2019		2018		2019		2018
Total revenue	$	1,403,630	$	1,293,403	$	1,664,277	$	1,522,174	$	1,913,851	$	1,858,356	$	1,480,618	$	1,381,193
Operating income	$	158,296	$	167,053	$	308,681	$	292,152	$	511,724	$	550,276	$	199,376	$	209,580
Net income	$	118,157	$	103,155	$	240,190	$	226,676	$	450,584	$	470,378	$	121,297	$	154,634
Earnings per share:
Basic	$	0.54	$	0.45	$	1.11	$	1.02	$	2.10	$	2.12	$	0.57	$	0.70
Diluted	$	0.54	$	0.45	$	1.11	$	1.01	$	2.09	$	2.11	$	0.56	$	0.70