Reconciliation of Statutory U.S. Federal Tax Rate to Effective Income Tax Rate (Detail)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Statutory rate	35.00%	35.00%	35.00%
State	2.00%	1.30%	1.40%
Federal domestic production deduction	(1.80%)	(0.90%)	(0.90%)
Tax on foreign earnings	(1.60%)	(3.80%)	(3.10%)
Other, net	(0.90%)	(0.70%)	(0.60%)
Effective Income Tax Rate Reconciliation, Percent, Total	32.70%	30.90%	31.80%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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