Pension and Other Postretirement Employee Benefit Plans (Details 1) (USD $) In Millions	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009
Defined benefit pension plans, U.S. [Member]
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax
Net gain/(loss)	$ (2,627)	$ (3,039)
Prior service credit/(cost)	321	364
Accumulated other comprehensive income/(loss), pretax, end of year	(2,306)	(2,675)
Defined benefit pension plans, Non-U.S. [Member]
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax
Net gain/(loss)	(566)	(666)
Prior service credit/(cost)	13	3
Accumulated other comprehensive income/(loss), pretax, end of year	(553)	(663)
OPEB Plans [Member]
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax
Net gain/(loss)	(119)	(171)
Prior service credit/(cost)	9	22
Accumulated other comprehensive income/(loss), pretax, end of year	$ (110)	$ (149)

The pretax total of net (gain) loss, prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph i

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- Definition

The aggregate net gain or loss recognized in other comprehensive income, including amounts arising during the period and reclassification adjustments of other comprehensive income as a result of being recognized as components of net periodic benefit cost for the period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph i

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 158

-Paragraph 7

-Subparagraph a

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- Definition

The aggregate net prior service cost or credit recognized in other comprehensive income, including amounts arising during the period and reclassification adjustments of other comprehensive income as a result of being recognized as components of net periodic benefit cost for the period.

+ References

+ Details

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