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Asset Impairment, Exit, and Restructuring Costs (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Restructuring Cost and Reserve [Line Items] |  |  |  |
Asset impairment, exit, and restructuring costs | $ 31 | $ 0 | $ 31 | $ 0
Relocation costs [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Asset impairment, exit, and restructuring costs | 16 |  |  |
Restructuring Charges [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Asset impairment, exit, and restructuring costs | $ 15 |  |  |

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- Definition The aggregate amount provided for estimated restructuring charges, remediation costs, and asset impairment loss during an accounting period. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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