v2.4.0.6

Debt And Related Expenses (Schedule Of Debt Instruments) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Debt Instrument [Line Items]
Commercial paper	$ 3,726
Net discount on other debentures and notes	(6)	2
Total debt	9,780	5,630
Less amount classified as short-term debt	3,811	1,811
Long-term debt	5,969	3,819
6.875% Retired On September 30, 2011 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	6.875%
Debt, maturity date	Sep. 30, 2011
Long term debt, gross		1,750
5.625% Due January 15, 2014 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	5.625%
Debt, maturity date	Jan. 15, 2014
Long term debt, gross	500	500
Non-Interest Bearing Promissory Note [Member]
Debt Instrument [Line Items]
Debt, maturity date	Jun. 29, 2014
Long term debt, gross	85	144
2.40% Due July 15, 2016 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	2.40%
Debt, maturity date	Jul. 15, 2016
Long term debt, gross	500
8.25% Due July 1, 2018 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	8.25%
Debt, maturity date	Jul. 01, 2018
Long term debt, gross	125	125
6.30% Due January 15, 2019 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	6.30%
Debt, maturity date	Jan. 15, 2019
Long term debt, gross	700	700
4.00% Due July 15, 2021 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	4.00%
Debt, maturity date	Jul. 15, 2021
Long term debt, gross	500
7.50% Due September 15, 2027 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	7.50%
Debt, maturity date	Sep. 15, 2027
Long term debt, gross	150	150
7.875% Due September 30, 2031[Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	7.875%
Debt, maturity date	Sep. 30, 2031
Long term debt, gross	1,250	1,250
7.95% Due April 15, 2032 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	7.95%
Debt, maturity date	Apr. 15, 2032
Long term debt, gross	1,000	1,000
5.60% Due July 15, 2041[Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	5.60%
Debt, maturity date	Jul. 15, 2041
Long term debt, gross	1,250
Other Debt [Member]
Debt Instrument [Line Items]
Long term debt, gross		$ 9

X

- Definition

Long Term Debt Gross

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No definition available.

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X

- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

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X

- Definition

Carrying value as of the balance sheet date of the sum of short-term debt and current maturities of long-term debt and capital lease obligations, which are due within one year (or one business cycle if longer).

+ References

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-Name Regulation S-X (SX)

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- Definition

Interest rate stated in the contractual debt agreement.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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- Definition

Date when the debt instrument is scheduled to be fully repaid, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc.).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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- Definition

The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

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Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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