Stock-Based Compensation - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended	9 Months Ended		3 Months Ended	1 Months Ended	9 Months Ended
	Dec. 31, 2013 tranche	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013 Performance Shares [Member]	Dec. 31, 2013 Restricted Stock Units [Member]	Jun. 28, 2014 Restricted Stock Units [Member]	Jun. 29, 2013 Restricted Stock Units [Member]	Jun. 28, 2014 Stock Option Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted		2.4	2.3
Weighted-average exercise prices		$ 21.92	$ 19.95
Share-based compensation, stock option outstanding		9.9
Weighted-average exercise price of options outstanding		$ 20.31
Restricted stock units				0.4		2.4	2.0
Restricted stock units (RSUs), weighted average grant date fair values				$ 21.77		$ 21.97	$ 19.86
Unvested RSUs outstanding						4.2
Unvested RSUs weighted-average grant date fair value						$ 20.61
Performance stock units				0.4		2.4	2.0
Performance stock units (PSUs), weighted average grant date fair values				$ 21.77		$ 21.97	$ 19.86
Minimum eligible percentage to receive target number of shares of company's common stock				0.00%
Maximum eligible percentage to receive target number of shares of company's common stock				200.00%
Performance stock units vesting period				3 years	3 years
Market stock units granted during the period	0.1
Valuation of MSUs using Monte Carlo simulation model	$ 18.65
Number of separate tranches	3
Trading period considered for determination of average price of stock for stock based award	30 days
Restricted stock units	0.2
Purchase of common stock from open market	0.2
Restricted stock units vesting period				3 years	3 years
Unrecognized compensation expense						$ 72.8		$ 26.9
Weighted-average period for recognition of unrecognized stock-based compensation, years						2 years 9 months 18 days		3 years 1 month 6 days