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Summary of Intangible Assets (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | $ 255.8 | $ 256.8
Accumulated Amortization | (126.1) | (92.5)
Net Carrying Value | 129.7 | 164.3
Weighted Average Useful Life (years) | 8 years 1 month 6 days | 8 years
Technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 32.7 | 32.2
Accumulated Amortization | (13.0) | (9.0)
Net Carrying Value | 19.7 | 23.2
Weighted Average Useful Life (years) | 8 years 10 months 24 days | 8 years 9 months 18 days
Customer-based |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 223.1 | 224.6
Accumulated Amortization | (113.1) | (83.5)
Net Carrying Value | $ 110.0 | $ 141.1
Weighted Average Useful Life (years) | 8 years | 7 years 9 months 18 days

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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