Debt - $39 Million Mezzanine Loan (Gaylord Rockies JV) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jul. 31, 2019
$39M Mezzanine Loan (Gaylord Rockies JV) [Member]
Debt Instrument [Line Items]
Face amount	$ 39	$ 39

Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant