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

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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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.

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