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Income Taxes (Summary of Effective Income Tax Rate For Continuing Operations) (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Federal statutory rate	35.00%	35.00%	35.00%
State taxes, net of federal income tax benefit	2.30%	0.30%	2.20%
Tax contingency accruals and tax settlements	0.40%	(3.10%)	2.00%
Non-deductible expenses	1.40%	(1.90%)	0.90%
Foreign rate differences	1.80%	3.10%	(0.10%)
Tax incentive	0.00%	0.50%	(0.10%)
Valuation allowance due to foreign losses	(1.50%)	0.00%	(0.40%)
Research and development tax credit	(2.00%)	1.50%	(0.60%)
Domestic Production Activities Deduction	(2.70%)	3.60%	(1.90%)
Remitted earnings from foreign operations	(23.70%)	0.10%	0.00%
Goodwill impairment	0.00%	(68.10%)	0.00%
Changes in estimates related to prior year tax provision	1.20%	(2.10%)	(2.30%)
Goodwill impairment	(0.90%)	2.20%	(3.80%)
Valuation allowance for capital loss carry-forwards	1.00%	1.30%	(10.20%)
Deduction for divestiture of subsidiary stock	(0.70%)	(10.90%)
Effective income tax rate for continuing operations	11.60%	(38.50%)	20.70%

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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 valuation allowance for capital loss carry-forwards.

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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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Percentage difference between the reported and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rate to pretax income (loss) from continuing operations attributable to increase (decrease) in income tax contingencies, net of tax settlements. Including, but not limited to, domestic, foreign, state and local, and other tax matters.

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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 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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