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Subsequent Events (Details) (USD $) In Millions	0 Months Ended
Subsequent Events (Details) (USD $) In Millions	Jul. 14, 2011
Subsequent Events (Details) [Abstract]
New credit facilities total, maximum	$ 750.0
Term loan, maximum	250.0
Revolving credit facility, maximum	500.0
Proceeds from issuance of term loan	250.0
Proceeds from issuance of revolving credit facility	$ 100.0

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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- Definition

The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets).

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