Effective Income Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
U.S. federal income tax rate	21.00%	35.00%	35.00%
Foreign tax rate variances	5.50%	(7.40%)	(6.40%)
Tax credits	(3.90%)	(3.30%)	(2.80%)
Change in Valuation Allowances	(3.20%)	(4.80%)	1.30%
Current year losses with no benefit	0.50%	0.30%	1.20%
Net operating loss carry-forwards	(0.10%)	(3.70%)	(3.40%)
Changes in tax reserves	3.40%	0.80%	0.50%
U.S. Expense Allocation	0.00%	2.00%	2.00%
Earnings of equity investments	(0.10%)	(0.10%)	(0.10%)
Withholding taxes	3.50%	2.10%	2.50%
State taxes, net of federal benefit	1.10%	0.30%	0.20%
Antitrust settlement	9.90%
U.S. GILTI Tax	1.70%
Change in U.S. tax rate		3.00%
Deemed mandatory repatriation		3.10%
Other, net	(0.90%)	(1.50%)	(1.40%)
Effective income tax rate	38.40%	25.80%	28.60%