Other Noncurrent Assets - Schedule of Other Noncurrent Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Other Assets, Noncurrent [Abstract]
Deferred income taxes	$ 554,056	$ 508,363	$ 548,184
Nonamortizable identifiable intangibles	461,179	458,589	483,506
Identifiable intangibles (net of amortization of $157.9 million, $136.8 million, and $153.7 million, respectively)	198,156	201,859	218,032
Other	212,784	223,326	189,032
Total other noncurrent assets	1,426,175	1,392,137	1,438,754
Accumulated amortization	$ 157,900	$ 153,700	$ 136,800