Financing Arrangements (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended				12 Months Ended
	Jan. 01, 2012	Oct. 02, 2011	Jul. 03, 2011	Apr. 03, 2011	Jan. 02, 2011	Oct. 03, 2010	Jul. 04, 2010	Apr. 04, 2010	Jan. 01, 2012 1% Sr. Convertible Notes due 2013 [Member]	Jan. 02, 2011 1% Sr. Convertible Notes due 2013 [Member]	Jan. 03, 2010 1% Sr. Convertible Notes due 2013 [Member]	May 31, 2006 1% Sr. Convertible Notes due 2013 [Member]	Jan. 01, 2012 1.5% Sr. Convertible Notes due 2017 [Member]	Jan. 02, 2011 1.5% Sr. Convertible Notes due 2017 [Member]	Aug. 31, 2010 1.5% Sr. Convertible Notes due 2017 [Member]
Carrying value of the convertible debt
Convertible long-term debt, par value									$ 1,150,000	$ 1,150,000		$ 1,150,000	$ 1,000,000	$ 1,000,000	$ 1,000,000
Notes redeemed at par									(221,939)	0
Unamortized interest discount									(75,915)	(156,801)			(247,235)	(282,167)
Convertible long-term debt, carrying value	1,604,911				1,711,032				852,146	993,199			752,765	717,833
Interest cost recognized for Convertible notes
Contractual interest coupon									10,692	11,500	11,500		15,000	5,208
Amortization of bond issuance costs									4,345	3,429	3,429		2,695	961
Amortization of bond discount	21,317	22,050	23,833	23,364	22,787	17,983	14,207	13,922	56,424	57,303	54,454		34,140	11,596
Total interest cost recognized									$ 71,461	$ 72,232	$ 69,383		$ 51,835	$ 17,765