EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Numerator for basic and diluted earnings per share:
Income from continuing operations	$ 86,918	$ 103,281	$ 426,404	$ 352,689
Discontinued operations	0	0	0	(10)
Net income	86,918	103,281	426,404	352,679
Net income attributable to noncontrolling interests	1,659	1,309	4,831	5,485
Net income attributable to common stockholders	$ 85,259	$ 101,972	$ 421,573	$ 347,194
Denominator:
Denominator for basic earnings per share—weighted average shares (in shares)	372,426	356,318	363,724	356,224
Effect of dilutive securities:
Stock options (in shares)	640	227	445	152
Restricted stock awards (in shares)	567	396	492	271
OP Unitholder Interests (in shares)	2,992	2,414	2,996	2,421
Denominator for diluted earnings per share—adjusted weighted average shares (in shares)	376,625	359,355	367,657	359,068
Basic earnings per share:
Income from continuing operations (in usd per share)	$ 0.23	$ 0.29	$ 1.17	$ 0.99
Net income attributable to common stockholders (in usd per share)	0.23	0.29	1.16	0.97
Diluted earnings per share:
Income from continuing operations (in usd per share)	0.23	0.29	1.16	0.98
Net income attributable to common stockholders (in usd per share)	0.23	0.28	1.15	0.97
Dividends declared per common share	$ 0.7925	$ 0.79	$ 2.3775	$ 2.37