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Derivatives Forward Contracts (Details) In Millions, unless otherwise specified |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2014 USD ($) | Mar. 31, 2014 JPY (¥) | Dec. 31, 2013 USD ($) | Dec. 31, 2013 JPY (¥) | Mar. 31, 2014 Forward Contracts USD ($) | Mar. 31, 2013 Forward Contracts USD ($) | Mar. 31, 2014 Forward Contracts SEK | Dec. 31, 2013 Forward Contracts USD ($)
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |  |  |
Notional amount | $ 1,800.0 | ¥ 187,900.0 | $ 1,900.0 | ¥ 203,600.0 | $ 23.2 |  | 150.5 | $ 20.4
Changes in derivative instruments |  |  |  |  |  |  |  |
Beginning balance |  |  |  |  | (0.1) | (0.1) |  |
Purchases |  |  |  |  | 0 | 0 |  |
Realized and unrealized gains (losses) |  |  |  |  | (0.1) | 0.4 |  |
Sales/settlements |  |  |  |  | 0.1 | (0.5) |  |
Ending balance |  |  |  |  | $ (0.1) | $ (0.2) |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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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 purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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