Software and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Software, net	$ 137,228	$ 155,386
Software, accumulated amortization	252,200	230,700
Other intangible assets amortization expense	19,000	19,400	$ 21,200
Software Marketed for Resale [Member]
Finite-Lived Intangible Assets [Line Items]
Software, net	27,500	40,900
Software, amortization expense	$ 12,800	12,800	13,900
Software Marketed for Resale [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years
Software Marketed for Resale [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	10 years
Software Acquired or Developed for Internal Use [Member]
Finite-Lived Intangible Assets [Line Items]
Software, net	$ 109,700	114,500
Software, amortization expense	$ 41,700	$ 45,200	$ 45,700
Software Acquired or Developed for Internal Use [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years
Software Acquired or Developed for Internal Use [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	10 years