Equity - Schedule of Dividends Payable (Details) - $ / shares	Sep. 30, 2020	Jan. 13, 2020
Dividends, Common Operating Partnership And LTIP Units [Abstract]
Dividends per share (in dollars per share)		$ 0.125
Dividends, Preferred Stock [Abstract]
Dividend per share (in dollars per share)	$ 0.178

Common Stock, Dividends, Per Share, Cash Paid And Distribution Per Unit Of Limited Partner Interest

No definition available.

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Namespace Prefix:	drh_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration