Software and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Software, net	$ 237,941	$ 209,507
Software, accumulated amortization	158,900	121,600
Other intangible assets amortization expense	$ 23,000	24,700	$ 18,500
Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	20 years
Software Marketed for External Sale [Member]
Finite-Lived Intangible Assets [Line Items]
Software, net	$ 70,100	85,900
Software, amortization expense	$ 14,500	14,800	13,600
Software Marketed for External Sale [Member] | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years
Software Marketed for External Sale [Member] | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	10 years
Software Acquired or Developed for Internal Use
Finite-Lived Intangible Assets [Line Items]
Software, net	$ 167,800	123,600
Software, amortization expense	$ 38,300	$ 26,700	$ 19,100
Software Acquired or Developed for Internal Use | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years
Software Acquired or Developed for Internal Use | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	10 years