Pension and Other Postretirement Employee Benefit Plans (Details) (Textuals) (USD $)	Mar. 31, 2011	Dec. 31, 2010
U.S. Defined Benefit Pension and OPEB Plans
Pension and other postretirement employee benefit plans (Numeric) [Abstract]
Fair value of plan assets	$ 12,500,000,000	$ 12,200,000,000
Defined benefit pension plans, U.S. [Member]
Pension and other postretirement employee benefit plans (Numeric) [Abstract]
Expected cost of funding benefits	42,000,000
Defined benefit pension plans, Non-U.S. [Member]
Pension and other postretirement employee benefit plans (Numeric) [Abstract]
Fair value of plan assets	2,800,000,000	2,600,000,000
Expected cost of funding benefits	166,000,000
OPEB Plans [Member]
Pension and other postretirement employee benefit plans (Numeric) [Abstract]
Expected cost of funding benefits	$ 2,000,000

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph d(iv)(b)(i)

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 87

-Paragraph 49

Name:	us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant