Shareholders' Equity (Details 2)	3 Months Ended								12 Months Ended
	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Weighted-average shares outstanding for basic and diluted earnings
Basic average shares outstanding	277,780,000	281,813,000	281,114,000	280,022,000	278,881,000	278,090,000	277,406,000	276,358,000	280,182,000	277,684,000	274,452,000
Dilutive effect of:
Convertible notes and warrants (in shares)									14,053,000	28,869,000	27,450,000
Stock options and restricted stock units (in shares)									428,000	702,000	653,000
Diluted weighted-average shares outstanding	291,562,000	296,920,000	295,547,000	294,632,000	278,881,000	300,866,000	315,208,000	319,119,000	294,663,000	307,255,000	302,555,000
Potential dilutive effect of weighted average shares									7,000,000	5,000,000	7,000,000