Earnings per Share (EPS) and Common Stock (Earnings per Share Basic and Diluted) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 29, 2014	Mar. 30, 2013
Earnings Per Share and Common Stock
Net income	$ 43,756	$ 17,037	$ 83,413	$ 52,848
Weighted average shares outstanding—Basic (in shares)	118,978	119,518	118,973	119,722
Dilutive effect of employee stock options, restricted shares and restricted stock units (in shares)	1,720	1,553	1,943	1,716
Weighted average shares outstanding—Diluted (in shares)	120,698	121,071	120,916	121,438
Earnings per share—Basic (in USD per share)	$ 0.37	$ 0.14	$ 0.70	$ 0.44
Earnings per share—Diluted (in USD per share)	$ 0.36	$ 0.14	$ 0.69	$ 0.44