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Income Taxes - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Effective income tax rate, at federal statutory income tax rate, percent | 21.00% |  | 35.00%
Maximum measurement period to finalize accounting of tax | 1 year |  |
Income tax provision | $ 46.5 | $ 61.7 |
Effective income tax rate, percent | 24.90% | 34.50% |
Tax cuts and jobs act of 2017, reduction in federal tax rate, percent | 14.00% |  |
Effective income tax rate, offset by domestic production activities, percent | 3.20% |  |
Effective income tax rate, federal benefit of state tax deductions, percent | 0.80% |  |
Cash paid for taxes, net of refunds received | $ 10.3 | $ 9.7 |

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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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