Consolidated Statements of Cash Flows (USD $) In Millions	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 82	$ 122
PLUM CREEK TIMBER CO INC [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	82	122
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Depreciation, Depletion and Amortization	44	48
Basis of Real Estate Sold	43	43
Equity Earnings from Timberland Venture	(30)	(29)
Distributions from Timberland Venture	28	28
Deferred Income Taxes	4	1
Gain on Sale of Properties and Other Assets	0	(13)
Deferred Revenue from Long-Term Gas Leases (Net of Amortization)	12	6
Working Capital Changes Impacting Cash Flow:
Like-Kind Exchange Funds	(35)	0
Other Working Capital Changes	4	(7)
Other	5	8
Net Cash Provided By Operating Activities	157	207
CASH FLOWS FROM INVESTING ACTIVITIES
Capital Expenditures (Excluding Timberland Acquisitions)	(28)	(31)
Timberlands and Minerals Acquired	(12)	0
Proceeds from Sale of Properties and Other Assets	0	13
Net Cash Used In Investing Activities	(40)	(18)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends	(136)	(136)
Borrowings on Line of Credit	555	1,137
Repayments on Line of Credit	(494)	(1,137)
Principal Payments and Retirement of Long-Term Debt	(49)	(53)
Proceeds from Stock Options Exercises	9	2
Acquisition of Treasury Stock	(1)	(51)
Net Cash Used In Financing Activities	(116)	(238)
Increase (Decrease) In Cash and Cash Equivalents	1	(49)
Cash and Cash Equivalents:
Beginning of Period	252	299
End of Period	253	250
PLUM CREEK TIMBERLANDS L P [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income before Allocation to Preferred Partnership Interest and Partners	111	151
Net Income	82	122
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Depreciation, Depletion and Amortization	44	48
Basis of Real Estate Sold	43	43
Equity Earnings from Timberland Venture	(30)	(29)
Distributions from Timberland Venture	28	28
Deferred Income Taxes	4	1
Gain on Sale of Properties and Other Assets	0	(13)
Deferred Revenue from Long-Term Gas Leases (Net of Amortization)	12	6
Working Capital Changes Impacting Cash Flow:
Like-Kind Exchange Funds	(35)	0
Other Working Capital Changes	4	(7)
Other	5	8
Net Cash Provided By Operating Activities	186	236
CASH FLOWS FROM INVESTING ACTIVITIES
Capital Expenditures (Excluding Timberland Acquisitions)	(28)	(31)
Timberlands and Minerals Acquired	(12)	0
Proceeds from Sale of Properties and Other Assets	0	13
Net Cash Used In Investing Activities	(40)	(18)
CASH FLOWS FROM FINANCING ACTIVITIES
Cash Distributions to Common Partners	(128)	(185)
Cash Distributions for Series T-1 Preferred Interest	(29)	(29)
Borrowings on Line of Credit	555	1,137
Repayments on Line of Credit	(494)	(1,137)
Principal Payments and Retirement of Long-Term Debt	(49)	(53)
Net Cash Used In Financing Activities	(145)	(267)
Increase (Decrease) In Cash and Cash Equivalents	1	(49)
Cash and Cash Equivalents:
Beginning of Period	252	299
End of Period	$ 253	$ 250

The cost basis of timberlands associated with timberland sold during the period.

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