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Consolidated Statements of Stockholders' Equity (Parenthetical) | 12 Months Ended
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Dec. 31, 2018 $ / shares | Dec. 31, 2017 $ / shares | Dec. 31, 2016 $ / shares
Statement of Stockholders' Equity [Abstract] |  |  |
Stock split ratio (in shares) |  |  | 2
Common Stock, Dividends, Per Share, Declared | $ 0.40 | $ 0.36 | $ 0.34

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 + Details
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