Annual report pursuant to Section 13 and 15(d)

Earnings Per Share - Additional Information (Detail)

v3.3.1.900
Earnings Per Share - Additional Information (Detail) - shares
shares in Millions
12 Months Ended
Sep. 26, 2015
Sep. 27, 2014
Sep. 28, 2013
Stock Options [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Common stock outstanding, not included in computation of diluted earnings per share 3.2 9.7 10.4