Fair Value of Financial Instruments (Details) (USD $)	Dec. 31, 2010	Dec. 31, 2009
Investments in Marketable Securities [Abstract]
Fair value of marketable securities in prepaid expenses and other current assets	$ 68,000,000	$ 58,000,000
Fair value of marketable securities in miscellaneous other assets	262,000,000	233,000,000
Derivative Financial Instruments and Hedging Activities [Abstract]
Notional value of interest rate swaps	200,000,000	200,000,000
Notional value of foreign currency purchase forward contracts	40,000,000	77,000,000
Notional value of foreign currency sale forward contracts	86,000,000	151,000,000
Notional value of foreign currency purchase forward contracts not designated as hedging instruments	8,000,000	14,000,000
Notional value of foreign currency sale forward contracts not designated as hedging instruments	75,000,000	73,000,000
Cash Surrender Value of Life Insurance Policies [Abstract]
Cash surrender value of life insurance policies	257,000,000	242,000,000
Long-term Debt [Abstract]
Carrying values of long-term debt	4,700,000,000	4,000,000,000
Fair values of long-term debt	$ 5,100,000,000	$ 4,500,000,000

Cash Surrender Value Life Insurance Policies.

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Aggregate notional amount of foreign currency derivatives, designated as hedging instruments, to purchase a foreign currency. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

+ Details

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Aggregate notional amount of foreign currency derivatives, designated as hedging instruments, to sell a foreign currency. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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Aggregate notional amount of foreign currency derivatives, not designated as hedging instruments, to purchase a foreign currency. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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Aggregate notional amount of foreign currency derivatives, not designated as hedging instruments, to sell a foreign currency. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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- Definition

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 17
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Technical Bulletin (FTB)
-Number 85-4
-Paragraph 2

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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number APB14-1
-Paragraph 31
-Subparagraph b

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 9

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Estimated fair value of the debt instrument at the balance-sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 10

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Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale which are intended to be held for less than one year or the normal operating cycle, whichever is longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 2
-Article 5

+ Details

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Total debt and equity financial instruments including: (1) securities held-to-maturity and (2) securities available-for-sale that will be held for the long-term.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 17

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- Definition

Aggregate notional amount of all interest rate derivatives designated as hedging instruments in fair value hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

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