Income Taxes (Detail) - Differences Between U.S. Federal Statutory Income Tax Rate and Effective Tax Rate on Income Before Income Taxes	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Statutory tax rate	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	2.40%	3.30%	3.10%
Effect of non-U.S. operations	(5.90%)	(6.50%)	(6.30%)
Record (release) reserve for tax contingencies	3.20%	1.70%	1.80%
Excess tax benefits from stock based compensation	(3.80%)	(0.00%)	(0.00%)
Nondeductible acquisition costs	2.60%	0.80%	0.10%
Record (release) valuation allowance	(0.20%)	0.50%	0.00%
Other items, net	(0.40%)	0.70%	(0.60%)
Effective tax rate	32.90%	35.50%	33.10%