EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Numerator for basic and diluted earnings per share:
Income from continuing operations	$ 127,588	$ 80,108
Discontinued operations	0	(10)
Net income	127,588	80,098
Net income attributable to noncontrolling interests	1,803	1,395
Net income attributable to common stockholders	$ 125,785	$ 78,703
Denominator:
Denominator for basic earnings per share—weighted average shares (in shares)	356,853	356,112
Effect of dilutive securities:
Stock options (in shares)	328	125
Restricted stock awards (in shares)	440	188
OP Unitholder Interests (in shares)	2,998	2,428
Denominator for diluted earnings per share—adjusted weighted average shares (in shares)	360,619	358,853
Basic earnings per share:
Income from continuing operations (in usd per share)	$ 0.36	$ 0.22
Net income attributable to common stockholders (in usd per share)	0.35	0.22
Diluted earnings per share:
Income from continuing operations (in usd per share)	0.35	0.22
Net income attributable to common stockholders (in usd per share)	0.35	0.22
Dividends declared per common share	$ 0.7925	$ 0.79