Debt assumed.

No definition available.

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Namespace Prefix:	pch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt instrument maturity year.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Interest coverage ratio.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Leverage ratio.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line Of Credit Additional Applicable Rate.

+ References

No definition available.

+ Details

Name:	pch_LineOfCreditAdditionalApplicableRate
Namespace Prefix:	pch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of credit, amount available to increase borrowing capacity.

+ References

No definition available.

+ Details

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Namespace Prefix:	pch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of tranches.

+ References

No definition available.

+ Details

Name:	pch_NumberOfTranches
Namespace Prefix:	pch_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

Name:	us-gaap_RepaymentsOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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- Details

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- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
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Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_BusinessAcquisitionAxis=pch_DelticTimberCorporationMember
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- Details

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- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_BondsMember
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Debt (Narrative) (Details)				3 Months Ended	6 Months Ended
Debt (Narrative) (Details)	Mar. 22, 2018 USD ($)	Feb. 20, 2018 USD ($)	Feb. 14, 2018 USD ($)	Mar. 31, 2018 USD ($) Tranche	Jun. 30, 2018 USD ($) Tranche	Dec. 31, 2014 USD ($)
Debt Instrument [Line Items]
Repayment of credit facility					$ 100,000,000
Unused Capacity, Commitment Fee Percentage					0.20%
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					1.00%
Additional Applicable Rate Added to Base Rate, Minimum					1.30%
Federal Fund Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					0.50%
Base Rate [Member]
Debt Instrument [Line Items]
Additional Applicable Rate Added to Base Rate, Minimum					0.30%
Maximum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					1.70%
Maximum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					0.70%
Minimum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					0.875%
Minimum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					0.00%
Line of Credit [Member]
Debt Instrument [Line Items]
Interest coverage ratio			300.00%
Maximum Borrowing Capacity			$ 380,000,000
Amount available to increase borrowing capacity			$ 420,000,000
Line of Credit [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio			40.00%
Line of Credit [Member] \| Deltic [Member]
Debt Instrument [Line Items]
Repayment of credit facility					$ 100,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Reyament funded through revolving credit facility					100,000,000
Letter of Credit [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity			$ 75,000,000
Swing Line Loan [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity						$ 25,000,000
Revenue Bonds [Member] \| Union County, Arkansas [Member] \| Deltic [Member]
Debt Instrument [Line Items]
Debt instrument maturity date		Oct. 01, 2027
Revenue Bonds [Member] \| Union County, Arkansas [Member] \| Irrevocable Standby Letter of Credit [Member]
Debt Instrument [Line Items]
Letters of credit		$ 29,700,000
Letter of credit expiration date		Apr. 13, 2023
Revenue Bonds [Member] \| Union County, Arkansas [Member] \| Letter of Credit [Member] \| Deltic [Member]
Debt Instrument [Line Items]
Debt assumed		$ 29,000,000
Medium Term Notes [Member]
Debt Instrument [Line Items]
Repayments of debt					14,300,000
Term Loans [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 100,000,000				$ 100,000,000
Interest coverage ratio	300.00%
Number of Tranches Included in Term Loan \| Tranche				3	0
Term Loans [Member] \| Term Loan, Tranche One [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross				$ 100,000,000
Interest Rate				4.05%
Debt instrument maturity date				2025
Term Loans [Member] \| Term Loan, Tranche Two [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross				$ 65,000,000
Interest Rate				4.80%
Debt instrument maturity date				2028
Term Loans [Member] \| Term Loan, Tranche Two [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate				1.95%
Term Loans [Member] \| Term Loan, Tranche Three [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross				$ 35,000,000
Interest Rate				4.80%
Debt instrument maturity date				2028
Term Loans [Member] \| Term Loan, Tranche Three [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate				1.95%
Term Loans [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio	40.00%
Term Loans [Member] \| Deltic [Member]
Debt Instrument [Line Items]
Repayment of credit facility	$ 106,000,000
Term Loans [Member] \| Deltic [Member] \| Debt Assumed [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 100,000,000