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Segment Information (Geographic) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Geographic Areas, Revenues from External Customers [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenue United States |  |  |  |  |  |  |  |  | $ 1,322.7 | $ 1,487.5 | $ 1,402.2
Revenue Japan |  |  |  |  |  |  |  |  | 200.0 | 199.7 | 305.0
Revenue Other Countries |  |  |  |  |  |  |  |  | 149.1 | 348.2 | 329.6
Revenue Foreign |  |  |  |  |  |  |  |  | 349.1 | 547.9 | 634.6
Total revenue | $ 462.4 | $ 374.5 | $ 454.4 | $ 380.5 | $ 666.4 | $ 564.6 | $ 459.7 | $ 344.7 | $ 1,671.8 | $ 2,035.4 | $ 2,036.8

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- Definition Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 5 -Section 03 -Paragraph 1 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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- Definition Revenue Japan + References No definition available. + Details
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- Definition Revenue United States + References No definition available. + Details
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