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Leases - Schedule of Supplemental Balance Sheet Information Related Leases Assets and Liabilities (Parentheticals) (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020
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Leases [Abstract] |  |
Accumulated amortization of finance lease assets | $ 3.7 | $ 1.7

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- Definition Accumulated amortization of finance lease asset. + References No definition available. + Details
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Namespace Prefix: | pch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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