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Condensed Consolidated Statement of Changes in Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares | 3 Months Ended | 6 Months Ended
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Jul. 16, 2016 | Jul. 18, 2015 | Jul. 16, 2016 | Jul. 18, 2015
Statement Of Stockholders Equity [Abstract] |  |  |  |
Cash dividends paid per common share | $ 0.1600 | $ 0.1450 | $ 0.3050 | $ 0.2775

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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