Income Taxes Components of Income Tax Expense Benefit (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income from continuing operations before income taxes and equity in net income of unconsolidated investments:
Domestic	$ 223,702	$ (8,293)	$ 49,630
Foreign	570,999	455,091	465,634
Income from continuing operations before income taxes and equity in net income of unconsolidated investments	794,701	446,798	515,264
Current income tax expense (benefit):
Federal	(2,712)	394,747	7,717
State	6,793	323	1,407
Foreign	91,581	78,688	63,957
Total	95,662	473,758	73,081
Deferred income tax (benefit) expense:
Federal	15,573	(58,640)	12,230
State	1,614	(2,288)	(1,715)
Foreign	31,977	18,987	12,667
Total	49,164	(41,941)	23,182
Total income tax expense	$ 144,826	$ 431,817	$ 96,263