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Income Taxes (Schedule Of Effective Income Tax Rate For Continuing Operations) (Details)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income tax expense at federal statutory rate	35.00%	35.00%
State taxes, net of federal income tax benefit	4.20%	0.60%
Income tax contingency accruals and tax settlements	1.20%	0.90%
Unremitted earnings from foreign operations	(1.10%)	(0.90%)
Changes in estimates related to prior year tax provision	1.90%	(0.20%)
Effective Income Tax Rate Reconciliation Deduction For Foreign Investment Adjustments	(6.60%)	(0.30%)
Non-deductible expenses	1.90%	1.00%
Valuation allowance for foreign operating loss carry-forwards	2.30%	0.10%
Research and development tax credit	(2.40%)	(0.90%)
Foreign rate differences	5.90%	(0.90%)
Valuation allowance for capital loss carry-forwards	0.00%	(1.10%)
Domestic production activities deduction	(2.80%)	(2.70%)
Effective income tax rate for income from continuing operations	39.50%	30.60%

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- Definition

The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the valuation allowance for capital loss carry-forwards.

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Effective Income Tax Rate Reconciliation Deduction For Foreign Investment Adjustments

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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 attributable to revisions of previously reported income tax expense.

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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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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 research tax credit.

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