International Paper sponsors and maintains the Retirement Plan of International Paper Company (the “Pension Plan”), a tax-qualified defined benefit pension plan that provides retirement benefits to substantially all U.S. salaried employees and hourly employees (receiving salaried benefits) hired prior to July 1, 2004, and substantially all other U.S. hourly and union employees who work at a participating business unit regardless of hire date. These employees generally are

eligible to participate in the Pension Plan upon attaining

21 years of age and completing one year of eligibility service. U.S. salaried employees and hourly employees (receiving salaried benefits) hired after June 30, 2004 are not eligible to participate in the Pension Plan, but receive a company contribution to their individual savings plan accounts (see Other U.S. Plans); however, salaried employees hired by Temple Inland prior to March 1, 2007 or Weyerhaeuser Company's Cellulose Fibers division prior to December 1, 2011 also participate in the Pension Plan. The Pension Plan provides defined pension benefits based on years of credited service and either final average earnings (salaried employees and hourly employees receiving salaried benefits), hourly job rates or specified benefit rates (hourly and union employees).

The Company also has three unfunded nonqualified defined benefit pension plans: a Pension Restoration Plan available to employees hired prior to July 1, 2004 that provides retirement benefits based on eligible compensation in excess of limits set by the Internal Revenue Service, and two supplemental retirement plans for senior managers (SERP), which is an alternative retirement plan for salaried employees who are senior vice presidents and above or who are designated by the chief executive officer as participants. These nonqualified plans are only funded to the extent of benefits paid, which totaled $40 million, $21 million and $62 million in 2017, 2016 and 2015, respectively, and which are expected to be $30 million in 2018.

The Company will freeze participation, including credited service and compensation, for salaried employees under the Pension Plan, the Pension Restoration Plan and the two SERP plans for all service on or after January 1, 2019. This change will not affect benefits accrued through December 31, 2018. For service after this date, employees affected by the freeze will receive Retirement Savings Account contributions as described later in this Note 16.

Many non-U.S. employees are covered by various retirement benefit arrangements, some of which are considered to be defined benefit pension plans for accounting purposes.

OBLIGATIONS AND FUNDED STATUS

The following table shows the changes in the benefit obligation and plan assets for 2017 and 2016, and the plans’ funded status.



	2017						2016
In millions	U.S. Plans			Non- U.S. Plans			U.S. Plans			Non- U.S. Plans
Change in projected benefit obligation:
Benefit obligation, January 1	$	13,683		$	219		$	14,438		$	204
Service cost	160			4			158			4
Interest cost	536			9			580			9
Settlements	(1,295		)	(4		)	(1,222		)	(2		)
Actuarial loss (gain)	913			2			495			35
Acquisitions	—			5			1			—
Divestitures	33			—			—			—
Plan amendments	3			—			—			(1		)
Benefits paid	(769		)	(8		)	(767		)	(9		)
Effect of foreign currency exchange rate movements	—			20			—			(21		)
Benefit obligation, December 31	$	13,264		$	247		$	13,683		$	219
Change in plan assets:
Fair value of plan assets, January 1	$	10,312		$	153		$	10,923		$	155
Actual return on plan assets	1,830			10			607			17
Company contributions	1,290			10			771			8
Benefits paid	(769		)	(8		)	(767		)	(9		)
Settlements	(1,295		)	(4		)	(1,222		)	(2		)
Other	—			3			—			—
Effect of foreign currency exchange rate movements	—			12			—			(16		)
Fair value of plan assets, December 31	$	11,368		$	176		$	10,312		$	153
Funded status, December 31	$	(1,896	)	$	(71	)	$	(3,371	)	$	(66	)
Amounts recognized in the consolidated balance sheet:
Non-current asset	$	—		$	5		$	—		$	6
Current liability	(30		)	(3		)	(40		)	(3		)
Non-current liability	(1,866		)	(73		)	(3,331		)	(69		)
	$	(1,896	)	$	(71	)	$	(3,371	)	$	(66	)



Amounts recognized in accumulated other comprehensive income under ASC 715 (pre-tax):
Prior service cost	$	88	$	(1	)	$	125	$	—
Net actuarial loss	3,893		67			4,757		61
	$	3,981	$	66		$	4,882	$	61

The components of the $901 million and $5 million change related to U.S. plans and non-U.S. plans, respectively, in the amounts recognized in OCI during 2017 consisted of:



In millions	U.S. Plans			Non- U.S. Plans
Current year actuarial (gain) loss	$	(143	)	$	2
Amortization of actuarial loss	(339		)	(2		)
Current year prior service cost	3			—
Amortization of prior service cost	(28		)	—
Settlements	(383		)	(1		)
Curtailments	(11		)	—
Effect of foreign currency exchange rate movements	—			6
	$	(901	)	$	5

The portion of the change in the funded status that was recognized in either net periodic benefit cost or OCI for the U.S. plans was $(184) million, $626 million and $505 million in 2017, 2016 and 2015, respectively. The portion of the change in funded status for the non-U.S. plans was $10 million, $23 million, and $8 million in 2017, 2016 and 2015, respectively.

The accumulated benefit obligation at December 31, 2017 and 2016 was $13.2 billion and $13.5 billion, respectively, for our U.S. defined benefit plans and $230 million and $205 million, respectively, at December 31, 2017 and 2016 for our non-U.S. defined benefit plans.

The following table summarizes information for pension plans with an accumulated benefit obligation in excess of plan assets at December 31, 2017 and 2016:



	2017				2016
In millions	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
Projected benefit obligation	$	13,264	$	215	$	13,683	$	190
Accumulated benefit obligation	13,161		200		13,535		177
Fair value of plan assets	11,368		139		10,312		118

ASC 715, “Compensation – Retirement Benefits” provides for delayed recognition of actuarial gains and losses, including amounts arising from changes in the estimated projected plan benefit obligation due to changes in the assumed discount rate, differences between the actual and expected return on plan assets and other assumption changes. These net gains and losses are recognized prospectively over a period that approximates the average remaining service period of active employees expected to receive benefits under the plans to the extent that they are not offset by gains in subsequent years. The estimated net loss and prior service cost that will be amortized from AOCI into net periodic pension cost for the U.S. plans during the next fiscal year are expected to be $327 million and $17 million, respectively.

NET PERIODIC PENSION EXPENSE

Service cost is the actuarial present value of benefits attributed by the plans’ benefit formula to services rendered by employees during the year. Interest cost represents the increase in the projected benefit obligation, which is a discounted amount, due to the passage of time. The expected return on plan assets reflects the computed amount of current-year earnings from the investment of plan assets using an estimated long-term rate of return.

Net periodic pension expense for qualified and nonqualified U.S. and non-U.S. defined benefit plans comprised the following:



	2017						2016						2015
In millions	U.S. Plans			Non- U.S. Plans			U.S. Plans			Non- U.S. Plans			U.S. Plans			Non- U.S. Plans
Service cost	$	160		$	4		$	158		$	4		$	161		$	6
Interest cost	536			9			580			9			597			10
Expected return on plan assets	(774		)	(11		)	(815		)	(10		)	(783		)	(11		)
Actuarial loss / (gain)	339			2			400			1			428			1
Amortization of prior service cost	28			—			41			—			43			—
Curtailment loss / (gain) (a)	23			—			—			—			—			—
Settlement loss	383			1			445			—			15			—
Special termination benefits (a)	22			—			—			—			—			—
Net periodic pension expense	$	717		$	5		$	809		$	4		$	461		$	6

(a) Recorded in Discontinued operations in the consolidated statement of operations.

The decrease in 2017 pension expense reflects lower settlement losses and lower actuarial losses partially offset by lower asset returns due to the annuity purchase as well as curtailment and special termination benefit charges.

On September 26, 2017, the Company entered into an agreement with The Prudential Insurance Company of America to purchase a group annuity contract and transfer approximately $1.3 billion of International Paper's U.S. qualified pension plan projected benefit obligations, subject to customary closing conditions. The transaction closed on October 3, 2017 and was funded with pension plan assets. Under the transaction, at the end of 2017, Prudential assumed responsibility for pension benefits and annuity administration for approximately 45,000 retirees or their beneficiaries receiving less than $450 in monthly benefit payments from the plan. Settlement accounting rules required a remeasurement of the qualified plan as of October 3, 2017 and the Company recognized a non-cash pension settlement charge of $376 million before tax in the fourth quarter of 2017. In addition, large payments from the non-qualified pension plan also required a remeasurement as of October 2, 2017 and a non-cash settlement charge of $7 million was also recognized in the fourth quarter of 2017.

In the first quarter of 2016 International Paper announced a voluntary, limited-time opportunity for former employees who are participants in the Retirement Plan of International Paper Company (the Pension Plan) to request early payment of their entire Pension Plan benefit in the form of a single lump sum payment. The amount of total payments under this program was approximately $1.2 billion, and were made from Plan trust assets on June 30, 2016. Based on the level of payments made, settlement accounting rules applied and resulted in a plan remeasurement as of the June 30, 2016 payment date. As a result of settlement accounting, the Company recognized a pro-rata portion of the unamortized net actuarial loss, after remeasurement, resulting in a $439 million non-cash charge to the Company's earnings in the second quarter of 2016. Additional payments of $8 million and $9 million were made during the third and fourth quarters, respectively, due to mandatory cash payouts and a small lump sum payout, and the Pension Plan was subsequently remeasured at September 30, 2016 and December 31, 2016. As a result of settlement accounting, the Company recognized non-cash settlement charges of $3 million in both the third and fourth quarters of 2016.

ASSUMPTIONS

International Paper evaluates its actuarial assumptions annually as of December 31 (the measurement date) and considers changes in these long-term factors based upon market conditions and the requirements for employers’ accounting for pensions. These assumptions are used to calculate benefit obligations as of December 31 of the current year and pension expense to be recorded in the following year (i.e., the discount rate used to determine the benefit obligation as of December 31, 2017 was also the discount rate used to determine net pension expense for the 2018 year).

Major actuarial assumptions used in determining the benefit obligations and net periodic pension cost for our defined benefit plans are presented in the following table:



	2017				2016				2015
	U.S. Plans		Non- U.S. Plans		U.S. Plans		Non- U.S. Plans		U.S. Plans		Non- U.S. Plans
Actuarial assumptions used to determine benefit obligations as of December 31:
Discount rate	3.60	%	3.59	%	4.10	%	3.88	%	4.40	%	4.64	%
Rate of compensation increase	3.75	%	4.06	%	3.75	%	4.20	%	3.75	%	4.12	%
Actuarial assumptions used to determine net periodic pension cost for years ended December 31:
Discount rate (a)	4.03	%	3.88	%	4.05	%	4.72	%	4.10	%	4.72	%
Expected long-term rate of return on plan assets	7.50	%	6.73	%	7.75	%	6.55	%	7.75	%	6.64	%
Rate of compensation increase	3.75	%	4.20	%	3.75	%	4.03	%	3.75	%	4.03	%

(a) Represents the weighted average rate for the U.S. qualified plans in 2017 and 2016 due to the remeasurements.

The expected long-term rate of return on plan assets is based on projected rates of return for current and planned asset classes in the plan’s investment portfolio. Projected rates of return are developed through an asset/liability study in which projected returns for each of the plan’s asset classes are determined after analyzing historical experience and future expectations of returns and volatility of the various asset classes.

Based on the target asset allocation for each asset class, the overall expected rate of return for the portfolio is developed considering the effects of active portfolio management and expenses paid from plan assets. The discount rate assumption was determined from a universe of high quality corporate bonds. A settlement portfolio is selected and matched to the present value of the plan’s projected benefit payments. To calculate pension expense for 2018, the Company will use an expected long-term rate of return on plan assets of 7.50% for the Retirement Plan of International Paper, a discount rate of 3.60% and an assumed rate of compensation increase of 3.75%. The Company estimates that it will record net pension expense of approximately $167 million for its U.S. defined benefit plans in 2018, compared to expense of $717 million in 2017. The 2017 expense includes $45 million of curtailment and special pension benefits associated with the North American Consumer Packaging business and $383 million of settlement accounting charges. Excluding these settlement charges and curtailment and special pension benefits, the estimated decrease in net pension expense in 2018 is primarily due to lower interest cost on the reduced pension obligation and a higher expected return on assets associated with the increased pension asset balance.

For non-U.S. pension plans, assumptions reflect economic assumptions applicable to each country.

The following illustrates the effect on pension expense for 2018 of a 25 basis point decrease in the above assumptions:



In millions	2018
Expense/(Income):
Discount rate	$	35
Expected long-term rate of return on plan assets	27
Rate of compensation increase	(1		)

PLAN ASSETS

International Paper’s Board of Directors has appointed a Fiduciary Review Committee that is responsible for fiduciary oversight of the U.S. Pension Plan, approving investment policy and reviewing the management and control of plan assets. Pension Plan assets are invested to maximize returns within prudent levels of risk.

The Pension Plan maintains a strategic asset allocation policy that designates target allocations by asset class. Investments are diversified across classes and within each class to minimize the risk of large losses. Derivatives, including swaps, forward and futures contracts, may be used as asset class substitutes or for hedging or other risk management purposes. Periodic reviews are made of investment policy objectives and investment manager performance. For non-U.S. plans, assets consist principally of common stock and fixed income securities.

International Paper’s U.S. pension allocations by type of fund at December 31, and target allocations were as follows:



Asset Class	2017		2016		Target Allocations
Equity accounts	49	%	51	%	42% - 53%
Fixed income accounts	36	%	27	%	32% - 44%
Real estate accounts	10	%	10	%	7% - 13%
Other	5	%	12	%	3% - 8%
Total	100	%	100	%

The fair values of International Paper’s pension plan assets at December 31, 2017 and 2016 by asset class are shown below. Plan assets included an immaterial amount of International Paper common stock at December 31, 2016. Hedge funds disclosed in the following table are allocated equally between equity and fixed income accounts for target allocation purposes.



Fair Value Measurement at December 31, 2017
Asset Class	Total			Quoted Prices in Active Markets For Identical Assets (Level 1)		Significant Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
In millions
Equities – domestic	$	1,291		$	1,291	$	—		$	—
Equities – international	2,132			2,119		13			—
Corporate bonds	1,177			—		1,177			—
Government securities	2,778			—		2,778			—
Mortgage backed securities	1			—		—			1
Other fixed income	(802		)	—		(814		)	12
Commodities	—			—		—			—
Derivatives	8			—		(8		)	16
Cash and cash equivalents	397			397		—			—
Other investments:
Equities - domestic	708
Equities - international	866
Corporate bonds	66
Other fixed income	232
Hedge funds	927
Private equity	481
Real estate	1,106
Total Investments	$	11,368		$	3,807	$	3,146		$	29



Fair Value Measurement at December 31, 2016
Asset Class	Total			Quoted Prices in Active Markets For Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
In millions
Equities – domestic	$	2,208		$	1,380	$	828	$	—
Equities – international	2,575			1,806		769		—
Corporate bonds	1,018			—		1,018		—
Government securities	870			—		870		—
Mortgage backed securities	41			—		40		1
Other fixed income	245			—		234		11
Commodities	324			—		324		—
Derivatives	(71		)	—		—		(71		)
Cash and cash equivalents	322			322		—		—
Other investments:
Hedge funds	891
Private equity	472
Real estate	1,015
Risk parity funds	402
Total Investments	$	10,312		$	3,508	$	4,083	$	(59	)

In accordance with accounting standards, the following investments are measured at NAV and are not classified in the fair value hierarchy. Some of the investments have redemption limitations, restrictions, and notice requirements which are further explained below.



Other Investments at December 31, 2017
Investment	Fair Value		Unfunded Commitments		Redemption Frequency	Remediation Notice Period
Equities - domestic	$	708	$	—	Daily to monthly	1-5 days
Equities - international	866		—		Daily to monthly	1-5 days
Corporate bonds	66		—		Daily to monthly	1-5 days
Other fixed income	232		—		Daily to monthly	1-5 days
Hedge funds	927		—		Daily to annually	1 - 100 days
Private equity	481		262		None	None
Real estate	1,106		121		Quarterly	45 - 60 days
Total	$	4,386	$	383



Other Investments at December 31, 2016
Investment	Fair Value		Unfunded Commitments		Redemption Frequency	Remediation Notice Period
Hedge funds	$	891	$	—	Daily to annually	1 - 100 days
Private equity	472		226		None	None
Real estate	1,015		224		Quarterly	45 - 60 days
Risk parity funds	402		—		Monthly	5 - 15 days
Total	$	2,780	$	450

Equity securities consist primarily of publicly traded U.S. companies and international companies. Publicly traded equities are valued at the closing prices reported in the active market in which the individual securities are traded.

Fixed income consists of government securities, mortgage-backed securities, corporate bonds and common collective funds. Government securities are valued by third-party pricing sources. Mortgage-backed security holdings consist primarily of agency-rated holdings. The fair value estimates for mortgage securities are calculated by third-party pricing sources chosen by the custodian’s price matrix. Corporate bonds are valued using either the yields currently available on comparable securities of issuers with similar credit ratings or using a discounted cash flows approach that utilizes observable inputs, such as current yields of similar instruments, but includes adjustments for certain risks that may not be observable, such as credit and liquidity risks. Common collective funds are valued at the net asset value per share multiplied by the number of shares held as of the measurement date.

Hedge funds are investment structures for managing private, loosely-regulated investment pools that can pursue a diverse array of investment strategies with a wide range of different securities and derivative instruments. These investments are made through funds-of-funds (commingled, multi-manager fund structures) and through direct investments in individual hedge funds. Hedge funds are primarily valued by each fund’s third-party administrator based upon the valuation of the underlying securities and instruments and primarily by applying a market or income valuation methodology as appropriate depending on the specific type of security or instrument held. Funds-of-funds are valued based upon the net asset values of the underlying investments in hedge funds.

Private equity consists of interests in partnerships that invest in U.S. and non-U.S. debt and equity securities. Partnership interests are valued using the most recent general partner statement of fair value, updated for any subsequent partnership interest cash flows.

Real estate includes commercial properties, land and timberland, and generally includes, but is not limited to, retail, office, industrial, multifamily and hotel properties. Real estate fund values are primarily reported by the fund manager and are based on valuation of the

underlying investments which include inputs such as cost, discounted cash flows, independent appraisals and market based comparable data.

Derivative investments such as futures, forward contracts, options and swaps are used to help manage risks. Derivatives are generally employed as an asset class substitutes (such as when employed in a portable alpha strategy), for managing asset/liability mismatches, or bona fide hedging or other appropriate risk management purposes. Derivative instruments are generally valued by the investment managers or in certain instances by third-party pricing sources.

The following is a reconciliation of the assets that are classified using significant unobservable inputs (Level 3) at December 31, 2017.

Fair Value Measurements Using Significant Unobservable Inputs (Level 3)



In millions	Mortgage backed securities		Other fixed income		Derivatives			Total
Beginning balance at December 31, 2015	$	—	$	10	$	(20	)	$	(10	)
Actual return on plan assets:
Relating to assets still held at the reporting date	—		1		(66		)	(65		)
Relating to assets sold during the period	—		—		(24		)	(24		)
Purchases, sales and settlements	1		—		39			40
Transfers in and/or out of Level 3	—		—		—			—
Ending balance at December 31, 2016	$	1	$	11	$	(71	)	$	(59	)
Actual return on plan assets:
Relating to assets still held at the reporting date	—		1		94			95
Relating to assets sold during the period	—		—		(23		)	(23		)
Purchases, sales and settlements	—		—		16			16
Transfers in and/or out of Level 3	—		—		—			—
Ending balance at December 31, 2017	$	1	$	12	$	16		$	29

FUNDING AND CASH FLOWS

The Company’s funding policy for the Pension Plan is to contribute amounts sufficient to meet legal funding requirements, plus any additional amounts that the Company may determine to be appropriate considering the funded status of the plans, tax deductibility, cash

flow generated by the Company, and other factors. The

Company continually reassesses the amount and

timing of any discretionary contributions. Contributions to the qualified plan totaling $1.25 billion, $750 million and $750 million were made by the Company in 2017, 2016 and 2015, respectively. Generally, International Paper’s non-U.S. pension plans are funded using the projected benefit as a target, except in certain countries where funding of benefit plans is not required.

At December 31, 2017, projected future pension benefit payments, excluding any termination benefits, were as follows:



In millions
2018	$	708
2019	709
2020	718
2021	727
2022	735
2023-2027	3,763

OTHER U.S. PLANS

International Paper sponsors the International Paper Company Salaried Savings Plan and the International Paper Company Hourly Savings Plan, both of which are tax-qualified defined contribution 401(k) savings plans. Substantially all U.S. salaried and certain hourly employees are eligible to participate and may make elective deferrals to such plans to save for retirement. International Paper makes matching contributions to participant accounts on a specified percentage of employee deferrals as determined by the provisions of each plan. For eligible employees hired after June 30, 2004, the Company makes Retirement Savings Account contributions equal to a percentage of an eligible employee’s pay.

The Company also sponsors the International Paper Company Deferred Compensation Savings Plan, which is an unfunded nonqualified defined contribution plan. This plan permits eligible employees to continue to make deferrals and receive company matching contributions (and Retirement Savings Account contributions) when their contributions to the International Paper Salaried Savings Plan are stopped due to limitations under U.S. tax law. Participant deferrals and company contributions are not invested in a separate trust, but are paid directly from International Paper’s general assets at the time benefits become due and payable.

Company contributions to the plans totaled approximately $117 million, $106 million and $100 million for the plan years ending in 2017, 2016 and 2015, respectively.