Income Taxes (Reconciliation of the Difference between the Actual Provisions for Income Taxes) (Detail)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	35.00%	35.00%	35.00%
State income taxes	0.80%	2.90%	2.20%
Valuation allowances for deferred tax assets, including state	1.30%	(1.80%)	(17.80%)
Foreign dividends	0.00%	0.50%	0.90%
Capitalized transaction costs	2.00%	0.00%	0.00%
Domestic production activities deduction	(2.60%)	(2.70%)	(2.40%)
Foreign income taxed at lower rates	(3.50%)	0.00%	0.00%
Other	2.10%	(1.50%)	2.00%
Effective income tax rate	35.10%	32.40%	19.90%

Effective Income Tax Rate Reconciliation, Nondeductible Expense, Capitalized Transaction Costs

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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 changes in the valuation allowance for deferred tax assets.

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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 statutory income tax expense (benefit) outside of the country of domicile.

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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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