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Income Taxes (Effective Income Tax Reconciliation) (Details) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income Tax Disclosure [Abstract] |  |  |
U.S. federal corporate tax rate | 35.00% | 35.00% | 35.00%
Tax on international operations less than U.S. tax rate | (4.50%) | (2.90%) | (5.10%)
Reversal of prior valuation allowance | (0.50%) | (0.30%) | 0.00%
Reversal of reserves for unrecognized tax benefits | (0.20%) | (0.60%) | (1.60%)
U.S. tax on international earnings, net of foreign tax credits | 0.10% | 1.30% | 4.60%
State income taxes, net of federal tax effect | 0.20% | 0.80% | 0.30%
U.S. research and development credits | (0.80%) | (0.80%) | (1.30%)
Excess tax benefits on share-based payments | (14.10%) | 0.00% | 0.00%
Impact of 2017 Tax Act | 15.90% | 0.00% | 0.00%
Tax on undistributed earnings of subsidiaries | 4.40% | 0.00% | 0.00%
Venezuela deconsolidation | 1.70% | 0.00% | 0.00%
Other business credits and Section 199 Deduction | (0.60%) | 1.10% | 1.30%
Other | (0.20%) | (0.10%) | 1.20%
Effective tax rate | 36.40% | 28.70% | 22.60%

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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