Reconciliation of Statutory U.S. Federal Tax Rate to Effective Income Tax Rate (Detail)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Statutory rate	21.00%	21.00%	35.00%
Rate change on deferred taxes			(14.00%)
Transition tax		(0.20%)	6.00%
State	2.30%	2.20%	1.80%
Federal domestic production deduction			(1.10%)
Tax on foreign earnings	0.90%	1.00%	(4.00%)
Other, net	(1.20%)	(2.10%)	(0.80%)
Effective income tax rate	23.00%	21.90%	22.90%

Effective income tax rate reconciliation, rate change on deferred tax, percent.

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Effective income tax rate reconciliation tax credits and expense foreign.

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Effective income tax rate reconciliation, transition tax, percent.

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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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