Shareholders' Equity - Capital stock (Details) - $ / shares shares in Thousands	12 Months Ended
Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Shareholders' Equity
Preferred stock shares authorized	15,000
Preferred stock par value (in dollars per share)	$ 0.01
Common stock (in shares)	500,000
Common stock par value (in dollars per share)	$ 0.125
Capital Stock
Balance at beginning of year (in shares)	270,287	274,228	276,582
Stock repurchases (in shares)	(11,917)	(6,898)	(5,197)
Share-based compensation activity	3,101	2,957	2,843
Balance at end of year (in shares)	261,471	270,287	274,228

No definition available.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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