Postretirement Benefits (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended								5 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012 U.S. Postretirement Benefit Plans [Member]		Dec. 31, 2011 U.S. Postretirement Benefit Plans [Member]	Dec. 31, 2010 U.S. Postretirement Benefit Plans [Member]	Dec. 31, 2012 Non-U.S. Postretirement Benefit Plans [Member]	Dec. 31, 2011 Non-U.S. Postretirement Benefit Plans [Member]	Dec. 31, 2010 Non-U.S. Postretirement Benefit Plans [Member]	Dec. 31, 2012 Temple Inland [Member]	Dec. 31, 2012 Temple Inland [Member] U.S. Postretirement Benefit Plans [Member]	Dec. 31, 2012 FY 2013 [Member] U.S. Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Increase (Decrease) in Pension and Postretirement Obligations	$ 29								$ 6
Increase (Decrease) in Expected Benefit Cost	11								1
Discount rate		4.40%	[1]	5.30%	5.40%					4.19%
Increased in the accumulated postretirement benefit obligation due to a 1% increase in annual health care cost trend rate		19
Decreased in the accumulated postretirement benefit obligation due to a 1% decrease in the annual trend rat		17
Effect of 1% point increase or decrease on net postretirement benefit cost		1
Increase (decrease) in the amounts recognized in OCI		4
Change in the funded status that was recognized in either net periodic benefit cost or OCI		0		47	5
Defined Benefit Plan, Amortization of Gains (Losses)											12
Net benefit expense		4		(7)	(6)	1	2	1
Benefit obligation						22	23
Amortization of prior service cost		$ 30		$ 25	$ 31						$ (25)

[1] Represents the weighted average rate for the IP plan for 2012 due to the remeasurement. The weighted average rate used for Temple-Inland in 2012 was 4.19%.