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Subsequent Events (Details) (USD $)	3 Months Ended	9 Months Ended		0 Months Ended	1 Months Ended	0 Months Ended
Subsequent Events (Details) (USD $)	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2011	Nov. 09, 2012 Subsequent Event [Member]	Oct. 31, 2012 Subsequent Event [Member]	Nov. 09, 2012 Subsequent Event [Member] Line of Credit
Subsequent Event [Line Items]
Proceeds from Sale of Property, Plant, and Equipment	$ 4,000,000				$ 2,715,000,000
Remaining Cash Proceeds					466,000,000
Cedit Facility Term						5
Borrowing capacity				2,000,000,000
Proceeds from credit facilities borrowings		$ 13,986,000,000	$ 11,914,000,000			$ 1,935,000,000
Credit Facility Borrowing Capacity Margin	50.00%			98.00%
Debt Instrument, Basis Spread on Variable Rate				4.50%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum				1.25%

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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- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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