Equity - Narrative (Details) $ / shares in Units, $ in Millions							1 Months Ended		12 Months Ended
	Aug. 31, 2021 $ / shares	Aug. 22, 2021	Aug. 21, 2021	Jul. 27, 2021 USD ($) shares	May 13, 2021 USD ($) shares	Nov. 30, 2018 shares	Jul. 31, 2021 USD ($) $ / shares shares	May 31, 2021 USD ($) $ / shares shares	Dec. 31, 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) | shares									500,000,000		500,000,000
Preferred Shares
Preferred shares of beneficial interest, authorized (in shares) | 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
Operating Partnership units outstanding (in shares) | shares									130,813,750		130,673,300
LTIP units, outstanding (in shares) | shares									727,208		127,111
At The Market Offering
Common Shares
Shares available for issuance, amount | $									$ 200.0	$ 200.0
Number of shares issued in transaction (in shares) | shares									0
Operating Partnership
Non-controlling Interest of Common Units in Operating Partnership
Operating Partnership units outstanding (in shares) | shares									133,605		133,605
Series C Cumulative Redeemable Preferred Shares
Preferred Shares
Preferred stock, dividend rate, percentage		6.50%							6.50%
Preferred shares of beneficial interest, redemption price per share (in usd per share) | $ / shares									$ 25.00
Preferred shares dividends accrued and unpaid (in usd per share) | $ / shares	$ 0.17
Preferred stock, redemption after change in control									120 days
Series D 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 shares dividends accrued and unpaid (in usd per share) | $ / shares	$ 0.16
Preferred stock, redemption after change in control									120 days
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%	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) | shares					9,200,000			9,200,000
Preferred Shares
Public offering price (in usd per share) | $ / shares								$ 25.00
Public offering, net proceeds | $					$ 222.6			$ 222.6
Series H Cumulative Redeemable Preferred Stock
Preferred Shares
Preferred stock, dividend rate, percentage									5.70%
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									2.2311
Series H Cumulative Redeemable Preferred Stock | Public Stock Offering
Common Shares
Number of shares issued in transaction (in shares) | shares				10,000,000			10,000,000
Preferred Shares
Public offering price (in usd per share) | $ / shares							$ 25.00
Public offering, net proceeds | $				$ 242.1			$ 242.1
February 2016 share repurchase program
Common Shares
Share repurchase program, authorized amount | $													$ 150.0
Share repurchased (in shares) | 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) | shares						133,605
Long-Term Incentive Partnership ("LTIP") Units
Non-controlling Interest of Common Units in Operating Partnership
Classes of LTIP Units | class									2
Awards vested (in shares) | shares									127,111