Financial Instruments and Risk Management (Details 4) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Reconciliation for assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Beginning Balance	$ 82	$ 226
Other-than-temporary impairment charge and realized gains (losses) on financial assets	(318)		140
Transfer of senior debt floating rate notes	(5)
Settlement on Auction Rate Securities	(72)
Change in fair value of Auction Rate Securities		30
Paid-in-kind interest on Numonyx subordinated notes		5
Change in fair value on Numonyx subordinated notes - pre-tax		2
Extinguishment of Numonyx subordinated notes		(180)
Currency translation adjustment		(1)
Ending Balance	0	82	226
Amount of total losses for the period included in earnings attributable to assets still held at the reporting date	(5)	0
Significant Unobservable Inputs (Level 3) [Member]
Reconciliation for assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Other-than-temporary impairment charge and realized gains (losses) on financial assets	$ (5)

Amount of total losses for the period included in earnings attributable to assets still held at the reporting date.

No definition available.

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- Definition

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Change in fair value subordinated notes.

+ References

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- Definition

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Paid in kind interest on subordinated notes.

+ References

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- Definition

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No definition available.

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- Definition

Transfers out of liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(3)

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- Definition

This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in other comprehensive income (a separate component of shareholders' equity).

+ References

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

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-Paragraph 32

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- Definition

The increase (decrease) of assets measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period. Such increase (decrease) may be comprised of changes in fair value (gains or losses) whether realized or unrealized that have been included in earnings, changed net asset value, or other comprehensive income (a separate component of shareholders' equity); purchases, sales, issuances, or settlements of assets; and net transfers in to or out of this category within the fair value hierarchy.

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- Definition

This element represents purchases, sales, issuances, and settlements (net) which have taken place during the period in relation to assets measured at fair value on a recurring basis using unobservable inputs (Level 3).

+ References

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- Definition

This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

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-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 32

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- Definition

The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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