OTHER OPERATING INCOME, NET - Items Included in Other Operating Income, Net (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Gain on disposition of non-strategic assets	$ (1)	$ (7)	$ (24)	$ (13)
Foreign exchange losses (gains), net	(12)	4	2	8
Land management income	(9)	(7)	(16)	(13)
Other, net	2	0	(12)	(10)
Total other operating income, net	(65)	(10)	(140)	(28)
U.S. and Canadian Other Postretirement Plans
Gain on postretirement plan amendment (Note 7)	$ (45)	$ 0	$ (90)	$ 0