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Pension Plans - Qualified Plan - Additional Information (Details)	12 Months Ended
	Dec. 31, 2020
Pension and Postretirement Benefits Other Than Pension Plans
Minimum time period for expected rate of return	10 years
Maximum time period for expected rate of return	20 years

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

Name:	us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration