DEBT (Details) (USD $)	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Interest Rate Swap [Member] \| Not Designated as Hedging Instrument [Member]
Debt Instrument [Line Items]
Notional amount	142,101,000	161,968,000
Revolving Credit Facility [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Net debt borrowings	2,000,000
Remaining borrowing capacity	180,000,000
Amount to secure outstanding letters of credit	2,000,000
Revolving Credit Facility [Member] \| Term Credit Agreement [Member]
Debt Instrument [Line Items]
Remaining borrowing capacity	100,000,000
Senior Exchangeable Notes due 2015 at a fixed interest rate of 4.50% [Member]
Debt Instrument [Line Items]
Maturity date	August 2015	2015
Exchange feature description	According to the indenture, in order for the notes to become exchangeable prior to May 15, 2015, the Company’s stock price must exceed 130 percent of the exchange price for 20 trading days during a period of 30 consecutive trading days as of the last day of the quarter. Based upon the average stock price for the 30 trading days ended March 31, 2015, these notes will not become exchangeable until May 15, 2015, the date at which the notes become exchangeable until maturity without the aforementioned condition.
Percent of the exchange price the stock price must exceed	130.00%
Trading day threshold	20 days
Number of trading days for stock price	30 days
Matariki Forestry Group [Member]
Debt Instrument [Line Items]
Effect of exchange rate on New Zealand JV debt	9,500,000
Matariki Forestry Group [Member] \| Noncontrolling interest shareholder loan at 0% interest rate [Member]
Debt Instrument [Line Items]
Repayments of Debt	1,400,000
Matariki Forestry Group [Member] \| Senior Secured Facilities Agreement as Amended July 2013, Revolving Cash Advance Facility due 2016 [Member]
Debt Instrument [Line Items]
New Zealand JV long-term variable rate debt	176,000,000
Periodic effective interest rate	6.60%
Basis point credit line fee	80.00%
Matariki Forestry Group [Member] \| Senior Secured Facilities Agreement as Amended July 2013, Revolving Cash Advance Facility due 2016 [Member] \| New Zealand Bank Bill Rate [Member]
Debt Instrument [Line Items]
Basis points on periodic interest rate	80.00%
Matariki Forestry Group [Member] \| Senior Secured Facilities Agreement as Amended July 2013, Revolving Cash Advance Facility due 2016 [Member] \| Interest Rate Swap [Member] \| Not Designated as Hedging Instrument [Member]
Debt Instrument [Line Items]
Notional amount	142,000,000
Percent of variable rate debt	81.00%

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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- Definition

Debt Instrument, Effect of Exchange Rate

+ References

No definition available.

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- Definition

Description of a feature that permits the holders of the debt to exchange the debt for a settlement amount, as defined in the indenture, before the stated maturity date. The description may include such items as the conditions required for the exchange feature to be exercised, the period that the holders can elect to exchange the debt, the calculation of the settlement amount and other significant terms of the exchange feature.

+ References

No definition available.

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- Definition

Debt Instrument, Exchange Price the Stock Price Must Exceed, Percent

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- Definition

Debt Instrument, Number of Consecutive Trading Days for Stock Price

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- Definition

Number of trading days during period for which the stock price must exceed the multiplier of the exchange price in order for the debt instrument to become exchangeable

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No definition available.

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- Definition

Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Percent Swapped

+ References

No definition available.

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- Definition

Line of Credit Facility, Amount to Secure Stand by Letters of Credit

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No definition available.

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Namespace Prefix:	ryn_
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- Definition

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

+ References

No definition available.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: 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(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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No definition available.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ 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 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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

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No definition available.

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