Income Taxes (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Taxes [Abstract]
Effective Tax Rate	29.80%	31.40%	28.50%	31.10%
Adjustment For Tax (Benefit) Expense From Discrete Items	(0.70%)	0.30%	(2.00%)	0.00%