Subsequent Events (Details) - Aug. 04, 2015 - Subsequent Event [Member] - USD ($) $ in Millions	Total
Subsequent Event [Line Items]
Equity Method Investment, Ownership Percentage	50.10%
Equity Method Investment, Net Sales Proceeds	$ 1,000
Equity Method Investment, Realized Gain (Loss) on Disposal	725
Proceeds Received Current Year [Member]
Subsequent Event [Line Items]
Equity Method Investment, Net Sales Proceeds	530
Proceeds To Be Received In Future Year [Member] [Member]
Subsequent Event [Line Items]
Equity Method Investment, Net Sales Proceeds	$ 500

This item represents the amount of net sales proceeds received on disposal of an equity method investment.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 35

-Paragraph 35

-URI http://asc.fasb.org/extlink&oid=35687916&loc=d3e32847-111569

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

+ References

No definition available.

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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