Other Noncurrent Assets - Schedule of Other Noncurrent Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Other Assets, Noncurrent [Abstract]
Deferred income taxes	$ 548,437	$ 510,928	$ 589,719
Nonamortizable identifiable intangibles	466,384	488,144	492,979
Identifiable intangibles (net of amortization of $147.9 million, $124.6 million, and $131.5 million, respectively)	206,874	212,161	219,311
Other	208,761	197,184	238,669
Total other noncurrent assets	1,430,456	1,408,417	1,540,678
Accumulated amortization	$ 147,900	$ 124,600	$ 131,500