CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 30, 2012	Dec. 25, 2011
Accounts receivable, allowances	$ 17,390	$ 17,275
Goodwill, accumulated impairment losses	$ 805,218	$ 805,218
Preferred stock, par value (USD per share)	$ 1	$ 1
Preferred stock, authorized (in shares)	200,000	200,000
Preferred stock, issued (in shares)	0	0
Common stock, par value (USD per share)	$ 0.1	$ 0.1
Class A Common Stock
Authorized shares (in shares)	300,000,000	300,000,000
Issued shares (in shares)	150,270,975	150,007,446
Treasury shares (in shares)	2,483,537	2,979,786
Class B Common Stock
Authorized shares (in shares)	818,385	818,885
Issued shares (in shares)	818,385	818,885
Treasury shares (in shares)	0	0