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Estimated Useful Lives of Intangible Assets Acquired (Detail)	9 Months Ended
	Sep. 30, 2013
Customer-Related Intangible Assets | Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	1 year
Customer-Related Intangible Assets | Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	14 years
Marketing-Related Intangible Assets | Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	1 year
Marketing-Related Intangible Assets | Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	10 years
Contract-Related Intangible Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	1 year
Other Intangible Assets | Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	3 years
Other Intangible Assets | Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	9 years

X

- Details

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X

- 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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