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Subsequent Events (Details) (USD $)
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0 Months Ended | 1 Months Ended | 1 Months Ended | 1 Months Ended | 1 Months Ended | 0 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jan. 17, 2012
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Nov. 30, 2011
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Dec. 31, 2011
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Jan. 31, 2012
Term Loan Credit Agreement [Member]
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Jan. 12, 2012
Term Loan Credit Agreement [Member]
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Jan. 31, 2012
Short Term Revolving Credit Agreement [Member]
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Jan. 12, 2012
Short Term Revolving Credit Agreement [Member]
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Jan. 31, 2012
Five Year Revolving Credit Agreement [Member]
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Jan. 12, 2012
Five Year Revolving Credit Agreement [Member]
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Jan. 12, 2012
Swing Line Loan Sub-Facility [Member]
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Jan. 12, 2012
Letter Of Credit Sub-Facility [Member]
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Jan. 17, 2012
2012 Senior Unsecured Notes [Member]
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Jan. 17, 2012
Bank Debt [Member]
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| Subsequent Event [Line Items] | |||||||||||||
| Acquisition cash tender offer | $ 11,100,000,000 | ||||||||||||
| Acquisition financed with cash on hand | 5,200,000,000 | ||||||||||||
| Acquisition financed with debts | 3,700,000,000 | 2,200,000,000 | |||||||||||
| Line Of Credit Facility | 1,250,000,000 | 1,000,000,000 | 750,000,000 | 1,250,000,000 | |||||||||
| Line of credit facility additional borrowings | 30,000,000 | 25,000,000 | |||||||||||
| Borrowed from banks | $ 1,000,000,000 | $ 400,000,000 | $ 750,000,000 | ||||||||||