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Stock Plans - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Stock Plans |  |  |
Employee service share-based compensation tax benefit realized from share-based compensation plans | $ 0.7 | $ 1.5 | $ 1.0

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- Definition The actual tax benefit realized from exercise, vesting or cancellation of the stock-based employee compensation arrangements. + References No definition available. + Details
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Namespace Prefix: | rhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration