Debt (Senior Notes) (Details) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Nov. 30, 2011	Oct. 01, 2011	Oct. 02, 2010	Oct. 01, 2011	Oct. 02, 2010	Apr. 02, 2011 5.75% Notes, Payable January 15, 2011 [Member]	Oct. 01, 2011 5.75% Notes, Payable January 15, 2011 [Member]	Dec. 31, 2010 5.75% Notes, Payable January 15, 2011 [Member]	Oct. 01, 2011 6.125% Notes, Payable January 15, 2016 [Member]	Oct. 01, 2011 7.20% Senior Notes, Payable April 15, 2012 [Member]	Oct. 01, 2011 7.20% Senior Notes, Payable April 15, 2012 [Member]
Debt Instrument [Line Items]
Notes payable, maturity date							Jan. 15, 2011		Jan. 15, 2016		Apr. 15, 2012
Interest rate percentage							5.75%		6.125%	7.20%	7.20%
Aggregate principal amount of debts							$ 500,000,000		$ 900,000,000	$ 400,000,000	$ 400,000,000
Aggregate principal amount of notes repurchased	48,730,000					298,248,000				15,000,000
Increase in interest rate from rating agency downgrade								0.25%			0.25%
Maximum increase in interest rate per agency from rating agency downgrade								1.00%			1.00%
Increase in interest expense per quarter for .25% increase in notes per $100,000 of outstanding notes		25,132,000	30,046,000	77,487,000	102,985,000			63			63
Incremental increase in outstanding notes								$ 100,000			$ 100,000
Aggregate amount of increase in interest rate from rating agency downgrade								0.75%			0.75%
Effect of each 0.25% increase in the interest rate notes on interest expense				would increase the Company's interest expense by approximately $63 per quarter per $100,000 of outstanding notes.
Repurchase price as percentage of principal amount of senior notes	102.71%									102.75%