Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan in the current remaining fiscal period. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

+ Details

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- Definition

The amount of increase or decrease in the fair value of plan assets during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

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- Definition

The aggregate amount of net gain (loss) recognized in net periodic benefit cost due to settlements and curtailments. Curtailments result from an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. Settlements result from an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts to cover vested benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph h

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (h)(7)

-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

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- Definition

The amount of increase decrease as a percentage in the fair value of plan assets during the period.

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- Definition

The adjustment made to the consolidated balance sheet to reflect the pension plans actual net funded status.

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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended					9 Months Ended		3 Months Ended
	Jun. 30, 2011	Sep. 30, 2011 Pension Westwood Shipping Lines and hardwoods operations	Sep. 30, 2011 Pension Hardwoods:	Sep. 30, 2011 Pension	Sep. 30, 2010 Pension	Sep. 30, 2011 Pension	Sep. 30, 2010 Pension	Jun. 30, 2011 Pension asset	Jun. 30, 2011 Liability for deferred pension	Jun. 30, 2011 Liability for deferred income taxes	Jun. 30, 2011 Cumulative other comprehensive loss	Sep. 30, 2011 Registered and Non registered Pension Plans Canada	Sep. 30, 2011 Non-Qualified Pension Plans, Defined Benefit United States	Sep. 30, 2011 Qualified Pension Plans, Defined Benefit United States	Sep. 30, 2011 Other Postretirement Benefits United States And Canada
Defined Benefit Plan Disclosure [Line Items]
Loss due to curtailment and special termination benefits		$ 11	$ 10	$ 13	$ 2	$ 14	$ 5
Increase in fair value of pension assets	138
Percentage increase in fair value of pension assets	2.90%
Pension plan adjustment for net funded status								20	86	(38)	(68)
Expected contribution to benefit plans during 2011												$ 83	$ 19	$ 0	$ 44