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Description of the Business and Summary of Significant Accounting Policies - Leases (Details) | Dec. 31, 2018 a
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Land in Osceola County, Florida [Member] |
Operating Leased Assets [Line Items] |
Land area covered under operating lease agreement | 65.3
Land in Grapevine, Texas [Member] |
Operating Leased Assets [Line Items] |
Land area covered under operating lease agreement | 10.0

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- Definition Area of a real estate property. + References No definition available. + Details
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Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LeaseArrangementTypeAxis=rhp_LandInGrapevineTexasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |