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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
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

Name:	pch_AccumulatedAmortizationOfFinanceLeaseAssets1
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