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Derivatives Derivatives (Unrealized and Realized Derivative Gains (Losses) Forward Contracts) (Details) (Forward contracts, USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Derivative [Line Items] |  |  |
Change in fair value of derivatives, included in other revenue | $ (0.1) | $ (0.3) |
Derivative, Fair Value, Net | (0.1) | (0.1) | 0
GBP |  |  |
Derivative [Line Items] |  |  |
Change in fair value of derivatives, included in other revenue | 0 | 0 |
Derivative, Fair Value, Net | 0 | 0 |
Euro Member Countries, Euro |  |  |
Derivative [Line Items] |  |  |
Change in fair value of derivatives, included in other revenue | 0.1 | (0.1) |
Derivative, Fair Value, Net | (0.1) | (0.1) |
SEK |  |  |
Derivative [Line Items] |  |  |
Change in fair value of derivatives, included in other revenue | 0 | 0 |
Derivative, Fair Value, Net | 0 | 0 |
United States of America, Dollars |  |  |
Derivative [Line Items] |  |  |
Change in fair value of derivatives, included in other revenue | (0.2) | (0.2) |
Derivative, Fair Value, Net | $ 0 | $ 0 |

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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13495-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 + Details
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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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