Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) (Parentheticals) - $ / shares shares in Thousands	3 Months Ended
Mar. 30, 2019	Mar. 31, 2018
Statements of Stockholders' Equity (Parenthetical) [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.26	$ 0.23
Contribution of shares to retirement plans	8,587	8,440
Acquisition of shares from stockholders	7,802	10,714
Sale of shares to stockholders	2,641	2,590

Statements of Stockholders' Equity (Parenthetical) [Abstract]

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Aggregate dividends paid during the period for each share of common stock outstanding.

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Number of shares of capital stock issued (purchased by employees) in connection with an employee stock ownership plan.

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Number of shares that have been repurchased during the period and are being held in treasury.

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