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Debt (Details Textuals) (USD $) In Millions	Jun. 30, 2011	May 26, 2011	Dec. 31, 2010
Debt (Textuals) [Abstract]
Five year committed bank credit facility credit agreement	$ 500	$ 500
Short-term debt	15.8		7.7
Commercial paper borrowings outstanding	$ 0

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.

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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