Related Party Transactions (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013 China Investment Corporation	Dec. 31, 2011 Terrific Investment Corporation	Dec. 31, 2011 Mong Duong Subsidiary
Related Party Transaction [Line Items]
Stock repurchased during the period (in shares)	20
Stock repurchased during period	$ 258
Investment In affiliate ownership percentage sold			19.00%
Affiliate ownership percentage of reporting entity		15.00%

Affiliate Ownership Percentage of Reporting Entity

No definition available.

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- Definition

The effective percentage of the affiliate's voting interest owned by the reporting entity (directly or indirectly)

+ References

No definition available.

+ Details

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- Details

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

+ Details

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

+ Details

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