Computation of Net Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 28, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 30, 2011	Sep. 27, 2013	Sep. 28, 2012	Sep. 30, 2011
Earnings Per Share [Line Items]
Earnings from continuing operations									$ 438,248	$ 427,049	$ 408,626
Loss from discontinued operations, net of taxes									0	0	(9,693)
Net earnings	$ 117,300	$ 112,800	$ 112,800	$ 95,300	$ 120,200	$ 108,800	$ 107,800	$ 90,200	$ 438,248	$ 427,049	$ 398,933
Weighted average shares outstanding - basic									108,352	111,376	116,703
Dilutive effect of potential common shares									1,701	2,097	2,032
Weighted average shares outstanding - diluted									110,053	113,473	118,735
Net earnings (loss) per share - basic:
Continuing operations									$ 4.04	$ 3.83	$ 3.50
Discontinued operations									$ 0	$ 0	$ (0.08)
Net earnings per share	$ 1.09	$ 1.04	$ 1.04	$ 0.87	$ 1.09	$ 0.98	$ 0.96	$ 0.80	$ 4.04	$ 3.83	$ 3.42
Net earnings (loss) per share - diluted:
Continuing operations									$ 3.98	$ 3.76	$ 3.44
Discontinued operations									$ 0	$ 0	$ (0.08)
Net earnings per share	$ 1.08	$ 1.03	$ 1.02	$ 0.86	$ 1.08	$ 0.96	$ 0.94	$ 0.79	$ 3.98	$ 3.76	$ 3.36
Anti-dilutive employee share-based awards, excluded									707	249	160