SEGMENT DATA - Narrative (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 1,713,888	$ 1,537,416	$ 1,590,368	$ 1,329,322	$ 1,717,210	$ 1,566,582	$ 1,614,472	$ 1,361,798	$ 6,170,994	$ 6,260,062	$ 6,241,516
Foreign operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									1,500,000	1,600,000	1,600,000
Identifiable long-lived assets	598,600				540,400				598,600	540,400	629,500
U.S. operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									4,700,000	4,700,000	4,600,000
Identifiable long-lived assets	$ 1,300,000				$ 1,400,000				$ 1,300,000	$ 1,400,000	$ 1,600,000