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Income Taxes (Details) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 USD ($) Country | Jun. 30, 2015 | Jun. 30, 2016 USD ($) Country | Jun. 30, 2015 | Dec. 31, 2015 USD ($)
Income Tax [Line Items] |  |  |  |  |
Effective income tax rate (as percent) | 37.80% | 38.30% | 38.60% | 39.60% |
U.S. Federal statutory rate (as percent) | 35.00% |  | 35.00% |  |
Gross unrecognized tax benefits, including interest and penalties | $ 40.3 |  | $ 40.3 |  | $ 38.9
Offsetting tax benefits | 1.0 |  | 1.0 |  | 1.0
Net unrecognized tax benefits | $ 39.3 |  | $ 39.3 |  | $ 37.9
Number of countries and territories in which the Company operates | Country | 80 |  | 80 |  |
Minimum [Member] |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Expected annual effective income tax rate (as percent) |  |  | 37.00% |  |
Maximum [Member] |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Expected annual effective income tax rate (as percent) |  |  | 38.00% |  |

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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=65882285&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=65882285&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=65882285&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=65882285&loc=d3e32698-109319 + Details
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