SEGMENT DATA - Narrative (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 1,772,525	$ 1,582,765	$ 1,600,842	$ 1,369,648	$ 1,713,161	$ 1,536,757	$ 1,589,637	$ 1,328,876	$ 6,325,780	$ 6,168,431	$ 6,251,000
Foreign operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									1,600,000	1,500,000	1,600,000
Identifiable long-lived assets	566,100				598,600				566,100	598,600	540,400
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									4,800,000	4,700,000	4,700,000
Identifiable long-lived assets	$ 1,200,000				$ 1,300,000				$ 1,200,000	$ 1,300,000	$ 1,400,000