Equity (Details) (USD $)	12 Months Ended		3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Sep. 29, 2012 Leucadia [Member]
Equity, Class of Treasury Stock [Line Items]
Cumulative foreign currency translation adjustment	$ (3,032,000)	$ (10,396,000)
Unrecognized prior service cost, net of income tax	(13,000)	(13,000)
Unrecognized actuarial net loss, net of income tax	(39,514,000)	(38,667,000)
Unrecognized derivative gains, net of income tax	(167,000)	(422,000)
Unrealized gain on marketable securities, net of income tax	103,000	89,000
Accumulated other comprehensive loss	(42,623,000)	(49,409,000)
Authorization to repurchase shares of common stock (in shares)	10,000,000
Shares repurchased (in shares)	2,400,000		10,400,000
Total cost of stock repurchased			$ 427,300,000
Increase in Mexican peso value relative to US dollar (in hundredths)	7.60%
Increase in British Pound value relative to US dollar (in hundredths)	3.90%