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ACQUISITIONS - Pro Forma (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pro forma condensed consolidated income statement
Total revenues, As reported	$ 1,961,720	$ 2,002,857	$ 1,796,220
Net income	406,926	367,470	$ 304,201
Wing
Acquisitions, additional information
Revenue of acquired business	4,625
Net income of acquired business	1,291
Pro forma condensed consolidated income statement
Total revenues, As reported	1,961,720	2,002,857
Total revenues, Pro forma	1,966,291	2,008,559
Net income	406,926	367,470
Net income, Pro forma	411,217	372,810
AllDale I and II
Acquisitions, additional information
Revenue of acquired business	48,411
Net income of acquired business	$ 18,543
Pro forma condensed consolidated income statement
Total revenues, As reported		2,002,857
Total revenues, Pro forma		2,042,545
Net income		367,470
Net income, Pro forma		$ 358,741

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