This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The amount of net income (loss) reported by an equity method investment of the entity.

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Equity Investments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended			3 Months Ended
	Dec. 31, 2014	Jun. 30, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Oct. 07, 2013
Schedule of Equity Method Investments [Line Items]
Gain (Loss) on Disposition of Business	$ 311us-gaap_GainLossOnSaleOfBusiness		$ 349us-gaap_GainLossOnSaleOfBusiness	$ 24us-gaap_GainLossOnSaleOfBusiness	$ 28us-gaap_GainLossOnSaleOfBusiness
Net Income (Loss) from equity investments			9	37	51
Impairment of equity investments		204
Borets [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Realized Gain (Loss) on Disposal						18
Equity method investment, ownership percentage							38.50%
Proserv Group Business [Domain]
Schedule of Equity Method Investments [Line Items]
Gain (Loss) on Disposition of Business			$ 65