Software and Other Intangible Assets - Estimated Amortization Expense for Future Fiscal Years Based on Capitalized Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Net Balance	$ 191,281	$ 203,634
Software [Member]
Finite-Lived Intangible Assets [Line Items]
2018	49,012
2019	40,471
2020	31,550
2021	19,734
2022	8,383
Thereafter	6,236
Net Balance	155,386
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
2018	19,145
2019	18,587
2020	17,688
2021	17,176
2022	17,015
Thereafter	101,670
Net Balance	$ 191,281