Litigation (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Nov. 24, 2012 States LegalAction
Loss Contingency Class Action Suits Number	7
Number Of States In Which Class Action Lawsuits Occurred	7
Loss Contingency, Range of Possible Loss, Maximum	$ 14
Multi-District Litigation [Member]
Number of plaintiffs	32
N.C. Federal Court [Member]
Number of plaintiffs	34

The estimated maximum amount of possible loss from the contingency.

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-Name Accounting Standards Codification

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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