Consolidated Balance Sheets (Unaudited) Parenthetical (USD $) In Thousands, except Share data	Sep. 25, 2011	Dec. 26, 2010	Sep. 26, 2010
Current assets
Accounts receivable, allowance for doubtful accounts	$ 32,700	$ 31,200	$ 35,000
Property, plant and equipment, accumulated depreciation	447,900	430,200	450,700
Other assets
Other intangibles, accumulated amortization	$ 608,300	$ 586,900	$ 574,900
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)	80,228,053	72,278,515	73,350,366