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Debt and Other Obligations Debt Securities Activity (Details) (USD $) In Millions, unless otherwise specified | 1 Months Ended | 3 Months Ended | 1 Months Ended
--- | --- | --- | ---
Nov. 30, 2013 2009 Series A [Member] | Dec. 31, 2013 electronotes | Dec. 31, 2013 Total | Dec. 31, 2013 2009 Series B [Member]
Debt Instrument |  |  |  |  |
Amount of bond issuance (redemption) | $ (2) | $ (4) | [1] | $ (7) | $ (1)
Interest rate | 2.25% | 3.56% | [1] |  | 3.77%
Percent of par value |  |  |  | 100.00% |
[1] | All redemptions were at 100 percent of par.

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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