SUBSEQUENT EVENTS (Details) $ / shares in Units, $ in Millions				9 Months Ended		12 Months Ended
	Oct. 31, 2016 $ / shares	Oct. 28, 2016 USD ($) Room $ / shares shares	Oct. 03, 2016 shares	Sep. 30, 2016 shares	Sep. 30, 2015 shares	Dec. 31, 2015 shares
Subsequent events
Common Unit redemptions				61,056	172,429
Preferred stock, shares authorized				100,000,000		100,000,000
Subsequent Event
Subsequent events
Common Unit redemptions			39,014
Cash dividends declared, common stock (in dollars per share) | $ / shares	$ 0.1625
9.25% Series A Preferred Stock
Subsequent events
Preferred stock, shares authorized				2,000,000
Preferred stock, dividend rate (as a percent)				9.25%		9.25%
9.25% Series A Preferred Stock | Subsequent Event
Subsequent events
Preferred stock, redemption amount | $		$ 50.7
Preferred stock, shares authorized		2,000,000
Preferred stock redemption price per share (in dollars per share) | $ / shares		$ 25.00
7.875% Series B Preferred Stock
Subsequent events
Preferred stock, shares authorized				3,000,000
Preferred stock, dividend rate (as a percent)				7.875%		7.875%
7.875% Series B Preferred Stock | Subsequent Event
Subsequent events
Cash dividends declared, preferred stock (in dollars per share) | $ / shares	0.4921875
7.125% Series C Preferred Stock
Subsequent events
Preferred stock, shares authorized				3,400,000
Preferred stock, dividend rate (as a percent)				7.125%		7.125%
7.125% Series C Preferred Stock | Subsequent Event
Subsequent events
Cash dividends declared, preferred stock (in dollars per share) | $ / shares	0.4453125
6.450% Series D Preferred Stock
Subsequent events
Preferred stock, shares authorized				3,000,000
Preferred stock, dividend rate (as a percent)				6.45%
6.450% Series D Preferred Stock | Subsequent Event
Subsequent events
Cash dividends declared, preferred stock (in dollars per share) | $ / shares	$ 0.403125
Hyatt Place | Chicago, IL | Subsequent Event
Subsequent events
Number of guestrooms | Room		206
Purchase price | $		$ 73.8