Equity - Narrative (Details)				9 Months Ended
	Jul. 24, 2020 shares	Feb. 12, 2020 shares	Nov. 30, 2018 shares	Sep. 30, 2020 USD ($) class $ / shares shares	Dec. 31, 2019 $ / shares shares	Jul. 27, 2017 USD ($)	Feb. 22, 2016 USD ($)
Common Shares
Common shares of beneficial interest, authorized (in shares)				500,000,000	500,000,000
Common shares of beneficial interest, par value (usd per share) | $ / shares				$ 0.01	$ 0.01
Preferred Shares
Preferred shares of beneficial interest, authorized (in shares)				100,000,000	100,000,000
Preferred shares of beneficial interest, par value (usd per share) | $ / shares				$ 0.01	$ 0.01
Non-controlling Interest of Common Units in Operating Partnership
LTIP units, outstanding (in shares)				127,111	236,351
Operating Partnership units outstanding (in shares)				130,673,300	130,484,956
Operating Partnership
Non-controlling Interest of Common Units in Operating Partnership
Operating Partnership units outstanding (in shares)				133,605	133,605
Series C Cumulative Redeemable Preferred Shares
Preferred Shares
Preferred stock, dividend rate, percentage				6.50%
Preferred shares of beneficial interest, redemption price per share (in usd per share) | $ / shares				$ 25.00
Preferred stock, redemption after change in control				120 days
Share cap ratio on preferred shares on conversion				2.0325
Series D Cumulative Redeemable Preferred Shares
Preferred Shares
Preferred stock, dividend rate, percentage				6.375%
Share cap ratio on preferred shares on conversion				1.9794
Series E Cumulative Redeemable Preferred Shares
Preferred Shares
Preferred stock, dividend rate, percentage				6.375%
Preferred shares of beneficial interest, redemption price per share (in usd per share) | $ / shares				$ 25.00
Preferred stock, redemption after change in control				120 days
Share cap ratio on preferred shares on conversion				1.9372
Series F Cumulative Redeemable Preferred Shares
Preferred Shares
Preferred stock, dividend rate, percentage				6.30%
Share cap ratio on preferred shares on conversion				2.0649
February 2016 share repurchase program
Common Shares
Share repurchase program, authorized amount | $							$ 150,000,000.0
Share repurchased (in shares)				0
Remaining authorized repurchase amount | $				$ 56,600,000
July 2017 share repurchase program
Common Shares
Share repurchase program, authorized amount | $						$ 100,000,000.0
LaSalle Hotel Properties | Operating partnership units
Preferred Shares
Equity interests issued (in shares)			133,605
Non-controlling Interest of Common Units in Operating Partnership
Equity interests issued (in shares)			133,605
LTIP units
Non-controlling Interest of Common Units in Operating Partnership
Classes of LTIP Units | class				2
Awards granted (in shares)		415,818
Accelerated share-based compensation | $				$ 10,500,000
Redemption of non-controlling interest LTIP units (in shares)	109,240