Equity - Narrative (Details) $ / shares in Units, $ in Millions					1 Months Ended		6 Months Ended
	Feb. 18, 2021 shares	Jul. 24, 2020 shares	Feb. 12, 2020 shares	Nov. 30, 2018 shares	May 31, 2021 USD ($) $ / shares shares	Mar. 31, 2020 USD ($)	Jun. 30, 2021 USD ($) class $ / shares shares	Apr. 29, 2021 USD ($)	Dec. 31, 2020 $ / 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 (in 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 (in usd per share) | $ / shares							$ 0.01		$ 0.01
Non-controlling Interest of Common Units in Operating Partnership
LTIP units, outstanding (in shares)							727,208		127,111
Operating Partnership units outstanding (in shares)							130,813,750		130,673,300
At The Market Offering
Common Shares
Shares available for issuance, amount | $							$ 200.0	$ 200.0
Number of shares issued in transaction (in shares)							0
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%
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							1.9794
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%
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							2.0649
Series G Cumulative Redeemable Preferred Shares
Preferred Shares
Preferred stock, dividend rate, percentage					6.375%		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							2.1231
Series G Cumulative Redeemable Preferred Shares | Public Stock Offering
Common Shares
Number of shares issued in transaction (in shares)					9,200,000
Preferred Shares
Public offering price (in usd per share) | $ / shares					$ 25.00
Public offering, net proceeds | $					$ 222.6
February 2016 share repurchase program
Common Shares
Share repurchase program, authorized amount | $											$ 150.0
Share repurchased (in shares)							0
Remaining authorized repurchase amount | $							$ 56.6
July 2017 share repurchase program
Common Shares
Share repurchase program, authorized amount | $										$ 100.0
LaSalle Hotel Properties | Operating partnership units
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 vested (in shares)							127,111
LTIP Class B units
Non-controlling Interest of Common Units in Operating Partnership
Awards granted (in shares)	600,097		415,818
Accelerated share-based compensation | $						$ 10.5
Redemption of non-controlling interest LTIP units (in shares)		109,240