Pension Plans - Qualified Plan - Additional Information (Details)	12 Months Ended
Dec. 31, 2018
Retirement Benefits [Abstract]
Minimum time period for expected rate of return	10 years
Maximum time period for expected rate of return	20 years

Maximum future years for which current portfolio asset allocations are evaluated for future returns.

No definition available.

Name:	rhp_MaximumTimePeriodForExpectedRateOfReturn
Namespace Prefix:	rhp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration