Consolidated Balance Sheets (Unaudited) Parenthetical (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 28, 2014	Dec. 29, 2013	Sep. 29, 2013
Current assets
Accounts receivable, allowance for doubtful accounts	$ 21,100	$ 19,000	$ 22,200
Property, plant and equipment, accumulated depreciation	513,700	500,500	497,100
Other assets
Other intangibles, accumulated amortization	$ 782,900	$ 744,800	$ 704,300
Shareholders' equity
Preference stock, par value (in dollars per share)	$ 2.50	$ 2.50	$ 2.50
Preference stock, authorized shares (in shares)	5,000,000	5,000,000	5,000,000
Preference stock, issued (in shares)	0	0	0
Common stock, par value (in dollars per share)	$ 0.50	$ 0.50	$ 0.50
Common stock, authorized shares (in shares)	600,000,000	600,000,000	600,000,000
Common stock, issued (in shares)	209,694,630	209,694,630	209,694,630
Treasury stock, at cost; shares (in shares)	83,535,298	78,640,228	79,855,578