ACQUISITIONS Narrative (Details) € in Millions, $ in Millions		6 Months Ended
	May 02, 2016 USD ($) Facilities	Jun. 30, 2016 USD ($) Tons	Jun. 30, 2016 EUR (€)	Jun. 30, 2015 USD ($)
Business Acquisition [Line Items]
Acquisitions, net of cash acquired		$ 61		$ 0
Weyerhaeuser Pulp Business [Member]
Business Acquisition [Line Items]
Payments to acquire businesses, gross	$ 2,200
Business combination, estimated debt to be assumed		$ 88
Estimated realized tax benefit	$ 300
Holmen Newspring Mill [Member]
Business Acquisition [Line Items]
Percentage of purchase price allocated to equity method investments		15.00%
Ownership percentage to be purchased		50.00%
Annual production capacity in metric tons | Tons		380,000
Acquisitions, net of cash acquired		$ 61	€ 54
Percentage of purchase price allocated to property, plant and equipment		85.00%
2611 Pulp Mills [Member] | Weyerhaeuser Pulp Business [Member]
Business Acquisition [Line Items]
Number of businesses acquired | Facilities	4
NBSK mill [Member] | Weyerhaeuser Pulp Business [Member]
Business Acquisition [Line Items]
Number of businesses acquired | Facilities	1
Converting facility [Member] | Weyerhaeuser Pulp Business [Member]
Business Acquisition [Line Items]
Number of businesses acquired | Facilities	2