Organization (Details)	2 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2020 USD ($) hotel room shares	Sep. 30, 2020 USD ($) hotel room shares	Sep. 30, 2020 USD ($) hotel room	Dec. 31, 2019 USD ($)	Apr. 30, 2020 hotel
Real Estate Properties [Line Items]
Number of hotels (in hotels)	31	31	31		30
Number of rooms in hotels, resorts and senior loan secured facility (in rooms) | room	10,102	10,102	10,102
Shares sold (in shares) | shares		4,760,000
Preferred stock, dividend rate	8.25%	8.25%	8.25%	8.25%
Net proceeds from shares sold | $		$ 114,500,000
Cash and cash equivalents | $	$ 110,555,000	$ 110,555,000	$ 110,555,000	$ 122,524,000
Series A Preferred Stock
Real Estate Properties [Line Items]
Shares sold (in shares) | shares	4,760,000
Atlanta, Georgia
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1	1	1
Boston, Massachusetts
Real Estate Properties [Line Items]
Number of hotels (in hotels)	2	2	2
Burlington, Vermont
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1	1	1
Charleston, South Carolina
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1	1	1
Chicago, Illinois
Real Estate Properties [Line Items]
Number of hotels (in hotels)	2	2	2
Denver, Colorado
Real Estate Properties [Line Items]
Number of hotels (in hotels)	2	2	2
Fort Lauderdale, Florida
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1	1	1
Fort Worth, Texas
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1	1	1
Huntington Beach, California
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1	1	1
Key West, Florida
Real Estate Properties [Line Items]
Number of hotels (in hotels)	2	2	2
New York, New York
Real Estate Properties [Line Items]
Number of hotels (in hotels)	4	4	4
Phoenix, Arizona
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1	1	1
Salt Lake City, Utah
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1	1	1
San Diego, California
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1	1	1
San Francisco, California
Real Estate Properties [Line Items]
Number of hotels (in hotels)	2	2	2
Sedona, Arizona
Real Estate Properties [Line Items]
Number of hotels (in hotels)	2	2	2
Sonoma, California
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1	1	1
South Lake Tahoe, California
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1	1	1
Washington D.C
Real Estate Properties [Line Items]
Number of hotels (in hotels)	2	2	2
St. Thomas, U.S. Virgin Islands
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1	1	1
Vail, Colorado
Real Estate Properties [Line Items]
Number of hotels (in hotels)	1	1	1
DiamondRock Hospitality Limited Partnership
Real Estate Properties [Line Items]
General partner, ownership interest			99.60%
Limited partners, ownership interest			0.40%
Suspended Operations, COVID-19
Real Estate Properties [Line Items]
Number of hotels (in hotels)	3	3	3		20
Re-opened Operations, COVID-19
Real Estate Properties [Line Items]
Number of hotels (in hotels)	17	17	17
Unsecured Term Loan
Real Estate Properties [Line Items]
Principal amount | $	$ 400,000,000	$ 400,000,000	$ 400,000,000
Revolving Credit Facility | Line of Credit
Real Estate Properties [Line Items]
Maximum borrowing capacity | $	400,000,000	400,000,000	400,000,000
Remaining borrowing capacity | $	$ 300,000,000.0	$ 300,000,000.0	$ 300,000,000.0