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Income Taxes (Reconciliation of Provision of Income Taxes) (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Federal income tax provision at the statutory rate	35.00%	35.00%	35.00%
State income tax provision, net of federal effect	(6.70%)	3.90%	3.40%
Non-U.S. subsidiary earnings	(7.30%)	(6.40%)	(7.00%)
Tax credits and deductions	(5.10%)	(0.80%)	(0.60%)
Change in unrecognized tax benefits	4.20%	0.30%	(3.00%)
Other, net	0.50%	0.20%	2.70%
Actual income tax provision	20.60%	32.20%	30.50%

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Effective Income Tax Rate Reconciliation Change In Unrecognized Tax Benefits

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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 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 other adjustments.

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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 tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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