INCOME TAXES - Items Excluded from Effective Income Tax Rates (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012 Income taxes on postretirement plan amendment discussed in Note 10	Mar. 31, 2012 State income tax settlements	Mar. 31, 2011 Income taxes on a non-strategic timberlands gain discussed in Note 6
Income Taxes [Line Items]
Income tax credit (charge) that is excluded from the companys effective income tax rate	$ (18)	$ 8	$ (56)