Software and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Software, net	$ 185,496	$ 237,941
Software, accumulated amortization	195,000	158,900
Other intangible assets amortization expense	$ 21,200	23,000	$ 24,700
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	$ 52,300	70,100
Software, amortization expense	$ 13,900	14,500	14,800
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	$ 133,200	167,800
Software, amortization expense	$ 45,700	$ 38,300	$ 26,700
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