Discontinued Operations And Held For Sale Businesses (Details) (USD $) In Millions	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Gain (loss) on disposal and impairment, after taxes	$ 0	$ (9)	$ 0	$ (22)
Discontinued Operations Income Loss
Revenue	59	296	148	674
Income from operations of discontinued businesses, before taxes	(24)	3	(42)	48
Income tax benefit (expense)	7	6	13	(5)
Income from operations of discontinued businesses	(17)	9	(29)	43
Subsidiary Lal Pir And Pak Gen [Member]
Loss on disposal and impairment recognized net of tax and noncontrolling interests		$ 3		$ 10

Gain (loss) after tax expense (benefit) and noncontrolling interests, not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group.

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- Definition

Revenue from operations of a business component (exclusive of any gain or loss on disposal, or provision therefore) during the reporting period, until its disposal

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- Definition

Gain (loss) after tax expense (benefit), not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 43

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 47
-Subparagraph b

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- Definition

Pretax income (loss) from operations of a business component (exclusive of any gain or loss on disposal, or provision therefore) during the reporting period, until its disposal.

+ References

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- Definition

After tax income (loss) from operations of a business component (exclusive of any gain or loss on disposal, or provision therefore) during the reporting period, until its disposal.

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- Definition

Income tax expense (benefit) attributable to income (loss) from discontinued operations during the phase-out period.

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