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Debt - 4.50% Senior Exchangeable Notes issued August 2009 (Narrative) (Details) - Senior Exchangeable Notes due 2015 at a fixed interest rate of 4.50% - USD ($) $ in Millions | 1 Months Ended |  |  |
--- | --- | --- | --- | ---
Aug. 31, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Debt Instrument [Line Items] |  |  |  |
Extinguishment of debt, amount | $ 131 |  |  |
Fixed interest rate | 4.50% | 4.50% | 4.50% | 4.50%

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: 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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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Gross amount of debt extinguished. + References No definition available. + Details
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- Details
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