Purchase Price Allocation (Parenthetical) (Detail)	Jul. 16, 2014	Jun. 26, 2014
Web Equity Solutions [Member]
Business Acquisition [Line Items]
Weighted average life of intangible assets acquired (in years)	17 years
Web Equity Solutions [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Weighted average life of intangible assets acquired (in years)	4 years
Web Equity Solutions [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Weighted average life of intangible assets acquired (in years)	18 years
Web Equity Solutions [Member] | Software [Member]
Business Acquisition [Line Items]
Weighted average life of intangible assets acquired (in years)	15 years
ICRA [Member]
Business Acquisition [Line Items]
Weighted average life of intangible assets acquired (in years)		26 years
ICRA [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Weighted average life of intangible assets acquired (in years)		36 years
ICRA [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Weighted average life of intangible assets acquired (in years)		19 years
ICRA [Member] | Other Intangibles [Member]
Business Acquisition [Line Items]
Weighted average life of intangible assets acquired (in years)		17 years