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The effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care 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 m

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

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The effect of a one-percentage- point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

+ References

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The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

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The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

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- Definition

Target allocation percentage of investments in debt securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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Target allocation percentage of investments in equity securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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Target allocation percentage of investments in real estate to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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The ultimate trend rate for health care costs.

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-Number 132R

-Paragraph 5

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The year when the ultimate health care cost trend rate is expected to be reached.

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The amount of the cost recognized during the period for defined contribution plans.

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-Number 132R

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Assumed Initial Health Care Trend Rate

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Defined Benefit Plan Target Allocation To Private Equity Venture Capital

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Pension And Other Postretirement Benefits (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate	5.50%
Health care cost trend rate projected in 2015	4.50%
Year that rate reaches ultimate trend rate	2015
Effect of one-percentage-point increase on service and interest costs	$ 63
Effect of one-percentage-point increase on postretirement benefit obligation	696
Effect of one-percentage-point decrease on service and interest costs	49
Effect of one-percentage-point decrease on postretirement benefit obligation	567
Costs for defined contribution plans	$ 378	$ 347	$ 339
Pension Benefits - U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation, equity securities	50.00%
Target asset allocation, debt securities	50.00%
Target asset allocation, venture capital	5.00%
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation, equity securities	47.00%
Target asset allocation, debt securities	50.00%
Target asset allocation, real estate funds	3.00%
Target asset allocation, venture capital	3.00%