Capital Transactions (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended						12 Months Ended
	Dec. 30, 2012 Stock	Jan. 01, 2012	Jan. 02, 2011	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010	Dec. 30, 2012 Common Stock [Member]	Jan. 01, 2012 Common Stock [Member] Vote	Jan. 02, 2011 Common Stock [Member]	Dec. 30, 2012 Class B Common Stock [Member]	Jan. 01, 2012 Class B Common Stock [Member] Vote	Jan. 02, 2011 Class B Common Stock [Member]	Dec. 20, 2012 Class B Common Stock [Member]	Mar. 06, 2012 Class B Common Stock [Member]	Mar. 08, 2011 Class B Common Stock [Member]	Apr. 29, 2008 Class B Common Stock [Member]
Capital Transactions (Textual) [Abstract]
Dividend declared and paid on the common stock							$ 1.00	$ 1.00	$ 1.00	$ 1.00	$ 1.00	$ 1.00
Common B stock per performance unit																1
Performance units authorized																400,000
Term of performance unit award agreement																10 years
Annual performance units granted																40,000
Maximum goal achievement percentage																100.00%
Increase in total number of shares outstanding										22,320	22,320	22,320
Performance units awarded													40,000	40,000	40,000
Performance units awards settled in cash										17,680	17,680
Performance units awards to be settled in cash in next fiscal year										19,880
Number of vote per share								1			20
Capital Transactions (Additional Textual) [Abstract]
Performance Unit Award Agreement costs recognized	$ 2.6	$ 2.3	$ 2.2
Share price				$ 65.58	$ 58.55	$ 55.58
Number of common class of stock outstanding	2