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Income Taxes (Schedule Of Effective Income Tax Rate For Continuing Operations) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income tax expense at federal statutory rate	21.00%	35.00%
State taxes, net of federal income tax benefit	1.40%	4.20%
Income tax contingency accruals and tax settlements	0.00%	1.20%
Unremitted earnings from foreign operations	0.00%	(1.10%)
Changes in estimates related to prior year tax provision	0.00%	(0.70%)
Non-deductible expenses	0.40%	1.90%
Valuation allowance for foreign operating loss carry-forwards	(1.50%)	2.30%
Research and development tax credit	(0.40%)	(2.40%)
Foreign rate differences	2.40%	5.90%
Foreign tax incentives	(0.90%)	0.00%
Domestic production activities deduction	0.00%	(2.80%)
Effective Income Tax Rate Reconciliation, Deduction, Amount	$ 5,287,000.000	$ 2,418,000.000
Effective income tax rate for income from continuing operations	22.50%	39.50%

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the operating loss carry-forward valuation allowances for foreign countries.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the difference between statutory income tax rates in foreign jurisdictions and the domestic federal statutory income tax rate on foreign earnings that are not expected to be permanently reinvested in the foreign country.

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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 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 attributable to nondeductible expenses.

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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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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 income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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Amount 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 deductions. Including, but not limited to, extraterritorial income exclusion deduction, qualified production activity deduction, dividend deduction, deduction for dividend paid to employee stock ownership plan, Medicare prescription drug benefit subsidy deduction, and other deductions.

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