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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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

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Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

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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.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

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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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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Principal due to Timberland Venture

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

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No definition available.

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LONG-TERM DEBT - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Feb. 19, 2016
Debt Instrument [Line Items]
Repayments of long-term debt		$ 2,423	$ 0	$ 0
Long-term debt	$ 6,628	6,628	$ 4,808
Plum Creek
Debt Instrument [Line Items]
Repayments of long-term debt		720
Senior Note due 2021 [Member]
Debt Instrument [Line Items]
Long-term debt	$ 569	$ 569
Interest rate, stated	4.70%	4.70%
Senior Note due 2021 [Member] \| Plum Creek
Debt Instrument [Line Items]
Long-term debt, fair value					$ 614
Senior Note due 2023 [Member]
Debt Instrument [Line Items]
Long-term debt	$ 325	$ 325
Interest rate, stated	3.25%	3.25%
Senior Note due 2023 [Member] \| Plum Creek
Debt Instrument [Line Items]
Long-term debt, fair value					324
Installment Note Payable [Member]
Debt Instrument [Line Items]
Long-term debt	$ 860	$ 860
Interest rate, stated	5.207%	5.207%
Installment Note Payable [Member] \| Plum Creek
Debt Instrument [Line Items]
Long-term debt, fair value					893
Note Payable to Timberland Venture [Member]
Debt Instrument [Line Items]
Principal on note payable due to Timberland Venture	$ 783	$ 783
Annual interest rate on note payable		7.375%
Note Payable to Timberland Venture [Member] \| Plum Creek
Debt Instrument [Line Items]
Note payable to Timberland Venture, fair value					$ 838
Term Loan due August 2017 [Member]
Debt Instrument [Line Items]
Term loan, maximum borrowing capacity	600	$ 600
Interest rate terms		LIBOR plus 1.05 percent
Repayments of debt	600
Term Loan due September 2017 [Member]
Debt Instrument [Line Items]
Term loan, maximum borrowing capacity	1,900	$ 1,900
Interest rate terms		LIBOR plus 1.05 percent
Repayments of debt	$ 1,100