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Income Taxes (Effective Income Tax Rate Reconciliation) (Details) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract] |  |  |
Tax provision at statutory rate based on income before income taxes (percent) | 35.00% | 35.00% | 35.00%
Effective Income Tax Rate Reconciliation Tax Reform | (111.00%) | 0.00% | 0.00%
Effective Income Tax Rate Reconciliation, Consolidated Group Restructuring | (7.40%) | 0.00% | 0.00%
Foreign income taxes (percent) | (5.30%) | (6.80%) | (3.60%)
Federal research credit (percent) | (2.80%) | (5.60%) | (2.00%)
Settlement of taxing authority examinations (percent) | (2.10%) | (3.50%) | (0.60%)
Stock-based compensation (percent) | (2.10%) | (0.00%) | (0.00%)
European permanent deduction (percent) | (0.50%) | (3.40%) | (2.10%)
Non deductible/non-taxable items (percent) | (0.50%) | 7.20% | 1.80%
State income taxes, net of federal tax benefit (percent) | 2.80% | 1.70% | 3.20%
Impact of repatriation of foreign earnings (percent) | 0.00% | 0.00% | 2.50%
Other, net (percent) | 0.80% | (0.30%) | (1.80%)
Effective income tax rate, continuing operations (percent) | (93.10%) | 24.30% | 32.40%

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- Definition Percentage of reported income tax expense (benefit) attributable to the Tax Cuts and Jobs Act of 2017. + References No definition available. + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: 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 + Details
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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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