Retirement Plans (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, cost recognized	$ 120		$ 122	$ 83
Qualified Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit expense	545
Supplemental Employee Retirement Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits paid	28		95	19
Nonqualified plans funded expected to be paid	46
U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Increased benefit obligation as a result of a decrease in the discount rate assumption	(1,298)
Nonqualified plans funded expected to be paid	767
Discount rate	4.10%		5.10%	5.60%
Expected long-term rate of return on plan assets	8.00%	[1]	8.00%	8.25%
Defined benefit expense	545		342	195
Total recognized in other comprehensive income	(2,392)
Accumulated benefit obligation for defined benefit plans	12,600		13,800
Estimated amount of net loss that will be amortized from OCI into net benefit cost in 2012	316
Estimated amount of prior service cost credit that will be amortized from OCI into net benefit cost in 2012	30
Plan assets increase (decrease) reflecting favorable investment results	(595)
Projected benefit obligation	12,903		14,201
Defined benefit plan, net periodic benefit cost estimate for 2013	366
Rate of compensation increase	3.75%		3.75%	3.75%
U.S. Plans [Member] | Qualified Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions	31		44	300
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits paid	8		8
Discount rate	4.96%		5.98%	6.01%
Expected long-term rate of return on plan assets	7.04%		7.62%	7.79%
Defined benefit expense	5		3	1
Total recognized in other comprehensive income	(5)
Accumulated benefit obligation for defined benefit plans	208		206
Projected benefit obligation	181		200
Rate of compensation increase	3.17%		3.12%	3.07%
Company contributions	(8)		(8)
Qualified Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions	$ 31
Scenario, Forecast [Member] | U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.90%
Expected long-term rate of return on plan assets	7.75%
Rate of compensation increase	3.75%
Temple Inland Inc [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets	6.16%		5.70%
Temple Inland Inc [Member] | Scenario, Forecast [Member] | U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets	7.00%

[1] Represents the expected rate of return for International Paper's qualified pension plan. The weighted average rate for the Temple-Inland Retirement Plan was