XML 123 R90.htm IDEA: XBRL DOCUMENT

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Additional Information (Detail) (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Jul. 07, 2014

Defined Benefit Plan Disclosure [Line Items]

Types Of Plans We Sponsor

The plans we sponsor in the U.S. and Canada differ according to each country’s requirements.

In the U.S., our pension plans are:


•	qualified — plans that qualify under the Internal Revenue Code; and


•	nonqualified — plans for select employees that provide additional benefits not qualified under the Internal Revenue Code.

In Canada, our pension plans are:


•	registered — plans that are registered under the Income Tax Act and applicable provincial pension acts; and


•	nonregistered — plans for select employees that provide additional benefits that may not be registered under the Income Tax Act or provincial pension acts.

We also offer retiree medical and life insurance plans in the U.S. and Canada. These plans are referred to as other postretirement benefit plans in the following disclosures.

Postretirement obligation increase

Amortization of prior service cost (credit)(2)(3)

Charge for curtailments and special termination benefits

Total equity decreased for changes in cumulative other comprehensive loss

Increase in pension plan liabilities

Pension plans with accumulated benefit obligations greater than plan assets, projected benefit obligations

Pension plans with accumulated benefit obligations greater than plan assets, accumulated benefit obligations

Pension plans with accumulated benefit obligations greater than plan assets, fair value of assets

Accumulated benefit obligation for all defined benefit pension plans

Retirement Compensation Arrangements

Retirement Compensation Arrangements fund a portion of our Canadian nonregistered pension plans.

Under Retirement Compensation Arrangements, our contributions are split:


•	50 percent to our investments in a portfolio of equities; and


•	50 percent to a noninterest-bearing refundable tax account held by the Canada Revenue Agency — as required by Canadian tax rules.

The Canadian tax rules requirement means that — on average, over time — approximately 50 percent of our Canadian nonregistered pension plans’ assets do not earn returns.

Actual return on plan assets

Number of employees covered under union-administered multiemployer pension plans

Multiemployer benefit plans contributions

Employer contributions to defined contribution plans

Qualified and Registered Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Fair value of plan assets

Expected return on plan assets

Actual return on plan assets

Defined Benefit Plan Disclosure [Line Items]

Benefit Plan Amendment

During fourth quarter 2013, we ratified an amendment to the Weyerhaeuser Pension Plan that closes the plan to newly hired and rehired salaried or non union employees effective January 1, 2014. Certain union employee groups adopted similar amendments effective at other dates. Beginning at the effective date, new hires and rehires into groups affected by these amendments will receive a company contribution for retirement in their 401(k) plan. The change was announced in December 2013.

During fourth quarter 2013, we ratified amendments to the Weyerhaeuser Company Limited Retirement Plan for Non-Union Employees and the Retirement Plan for Non-Union Employees of Weyerhaeuser Company Limited at Grand Prairie, Alberta and Grande Cache, Alberta that (1) closes these plans to new hires and rehires effective January 1, 2014 and (2) changes the early retirement reduction for current employees enrolled in these plans, effective for future years of service beginning January 1, 2016. These changes were announced to participants in December 2013.

Amortization of prior service cost (credit)(2)(3)

Charge for curtailments and special termination benefits

Increase in fair value of pension assets

Employer contributions and benefit payments

Fair value of plan assets

Percentage increase in fair value of pension assets

Actual return on plan assets

Registered Canadian Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Employer contributions and benefit payments

Expected contribution to benefit plans during 2015

United States Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Annual rate of return on assets over 30 years

Annual rate of return on assets over the past 5 years

Canadian Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Canadian Other Postretirement Benefit Plans

Defined Benefit Plan Disclosure [Line Items]

United States Other Postretirement Benefit Plans

Defined Benefit Plan Disclosure [Line Items]

Other Postretirement Benefits

Defined Benefit Plan Disclosure [Line Items]

Benefit Plan Amendment

During fourth quarter 2014, the decision was ratified to reinstate or modify available options for U.S. and Canadian postretirement benefits for certain retirees. As a result, our postretirement obligation increased by $45 million.

During fourth quarter 2013, the decision was ratified to eliminate Company funding of the Post-Medicare Health Reimbursement Account (HRA) for certain salaried retirees after 2014. This change was communicated to affected retirees during January 2014. As a result, we recognized a pretax gain of $151 million in 2014 from this plan amendment.

Amortization of prior service cost (credit)(2)(3)

Charge for curtailments and special termination benefits

Increase in fair value of pension assets

Employer contributions and benefit payments

Fair value of plan assets

Expected contribution to benefit plans during 2015

Actual return on plan assets

Non-Qualified U.S. Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Employer contributions and benefit payments

Expected contribution to benefit plans during 2015

Qualified U.S. Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Charge for curtailments and special termination benefits

Funded status of our plan reduced

Deferred tax liabilities decrease

Total equity decreased for changes in cumulative other comprehensive loss

Expected contribution to benefit plans during 2015

Non Registered Canadian Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Employer contributions and benefit payments

Fair value of plan assets

Expected contribution to benefit plans during 2015

Expected Return on Plan Assets

Canadian tax rules require that 50 percent of the assets for nonregistered plans go to a noninterest-bearing refundable tax account. As a result, the return we earn investing the other 50 percent is spread over 100 percent of the assets.

Expected return on plan assets

Defined Benefit Plan Disclosure [Line Items]

Weighted health care cost trend rate assumed for next year

Defined Benefit Plan Disclosure [Line Items]

Weighted health care cost trend rate assumed for next year

U.S. | Qualified and Registered Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Expected Return on Plan Assets

is comprised of:


•	a 7.3 percent assumed return from direct investments and


•	a 1.7 percent assumed return from derivatives.

Determining our expected return:


•	requires a high degree of judgment,


•	uses our historical fund returns as a base and


•	places added weight on more recent pension plan asset performance.

Over the 30 years it has been in place, our U.S. pension trust investment strategy has achieved a 14.6 percent net compound annual return rate.

Fair Value, Inputs, Level 3

Defined Benefit Plan Disclosure [Line Items]

Fair value of plan assets

Fair Value, Inputs, Level 3 | Pension

Defined Benefit Plan Disclosure [Line Items]

Fair value of plan assets

Fair value of plan assets, percent

Fair Value, Inputs, Level 3 | Non Registered Canadian Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Fair value of plan assets

Investments | Qualified and Registered Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Expected return on plan assets

Derivatives | Qualified and Registered Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Expected return on plan assets

Investments we are allowed to invest | Non Registered Canadian Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Expected return on plan assets

Collective Bargaining Arrangement | Other Postretirement Benefits

Defined Benefit Plan Disclosure [Line Items]

Expected contribution to benefit plans during 2015

Real Estate Divestiture | Qualified U.S. Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Charge for curtailments and special termination benefits

Charges for restructuring, closures and impairments | Qualified U.S. Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Charge for curtailments and special termination benefits

Gain on postretirement plan amendment | Other Postretirement Benefits

Defined Benefit Plan Disclosure [Line Items]

Amortization of prior service cost (credit)(2)(3)

$ (151,000,000)

$ (103,000,000)