Equity - Narrative (Details) $ / shares in Units, $ in Millions			1 Months Ended		3 Months Ended
	Aug. 31, 2021 $ / shares	Nov. 30, 2018 shares	Jul. 31, 2021 USD ($) $ / shares shares	May 31, 2021 USD ($) $ / shares shares	Mar. 31, 2022 USD ($) class $ / shares shares	Dec. 31, 2021 $ / shares shares	Apr. 29, 2021 USD ($)	Jul. 27, 2017 USD ($)	Feb. 22, 2016 USD ($)
Common Shares
Common shares of beneficial interest, authorized (in shares)					500,000,000	500,000,000
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
Operating Partnership units outstanding (in shares)					130,904,299	130,813,750
LTIP units, outstanding (in shares)					727,208	727,208
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 dividends accrued and unpaid (in usd per share) | $ / shares	$ 0.17
Series D Cumulative Redeemable Preferred Shares
Preferred Shares
Preferred stock, dividend rate, percentage					6.375%
Preferred shares dividends accrued and unpaid (in usd per share) | $ / shares	$ 0.16
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%
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
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)			10,000,000
Preferred Shares
Public offering price (in usd per share) | $ / shares			$ 25.00
Public offering, net proceeds | $			$ 242.1
LaSalle Hotel Properties | Operating partnership units
Non-controlling Interest of Common Units in Operating Partnership
Equity interests issued (in 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)					127,111
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