Stock-Based Compensation and Other Stock Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Number of shares available for future grants	0		0
Net stock-based compensation expense	$ 11.6	$ 10.1	$ 23.1	$ 18.7
Cash received from stock purchase and option plan exercises	22.0	19.3	36.5	32.1
Tax benefit realized from exercise and vesting of share-based payment arrangements	$ 4.2	3.4	$ 19.3	$ 15.4
2011 Incentive Stock and Awards Plan [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Number of shares available for future grants	4,986,665		4,986,665
Employees Stock Purchase Plan [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Number of shares issued			57,324	56,582
Number of shares reserved for issuance	807,719		807,719
Employee contributions for purchase of common stock			$ 0.5
Stock based compensation expense	$ 1.1	0.5	$ 2.1	$ 1.0
Employee stock purchase plan, description			The purchase price of the company's common stock to participants is the lesser of the mean of the high and low price of the stock on the beginning date (May 15) or ending date (the following May 14) of each plan year.
Franchisee Stock Purchase Plan [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Number of shares issued			74,001	74,502
Number of shares reserved for issuance	156,336		156,336
Stock based compensation expense	$ 1.0	0.5	$ 2.2	$ 0.8
Franchisee contributions for purchase of common stock			$ 0.6
Franchisee stock purchase plan, description			All franchisees in the United States and Canada are eligible to participate in a franchisee stock purchase plan. The purchase price of the company's common stock to participants is the lesser of the mean of the high and low price of the stock on the beginning date (May 15) or ending date (the following May 14) of each plan year.
Stock Option [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Weighted average contractual term (in years)			10 years
Weighted-average grant date fair value granted			$ 25.65	$ 20.19
Intrinsic value of stock exercised	10.9	7.0	$ 30.2	$ 19.4
Fair value of stock vested			9.9	$ 9.5
Unrecognized compensation cost related to non-vested award	22.8		$ 22.8
Cost expected to be recognized over weighted-average period, in years			2 years
Performance Awards [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Weighted average contractual term (in years)			3 years
Weighted-average grant date fair value granted			$ 139.06	$ 102.55
Unrecognized compensation cost related to non-vested award	23.9		$ 23.9
Cost expected to be recognized over weighted-average period, in years			1 year 10 months 24 days
Maximum stock percentage to be awarded			100.00%
Performance period for awards granted (in years)			3 years
Performance awards shares paid out			130,764	146,313
Restricted Stock Units [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Performance period for awards granted (in years)			1 year
Awards granted vesting period (in years)			2 years
Shares granted					78,585	84,413	95,047
Units granted vesting date					2016	2015	2014
Shares vested					95,047
Cash-Settled Stock Appreciation Rights [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Weighted average contractual term (in years)			10 years
Weighted-average grant date fair value granted			$ 31.02
Intrinsic value of stock exercised	6.6	$ 0.7	$ 10.0	$ 4.0
Fair value of stock vested			4.2	$ 4.5
Unrecognized compensation cost related to non-vested award	$ 0.3		$ 0.3
Cost expected to be recognized over weighted-average period, in years			1 year 10 months 24 days
Shares granted	0	0	4,000
Shares vested			44,000
Restricted Stock [Member] | Non-employee Directors [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Shares granted			8,640		10,398
Stock-Settled SARs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Number of shares available for future grants	0		0
Weighted-average grant date fair value granted			$ 25.36	$ 19.55
Intrinsic value of stock exercised	$ 0.4	$ 0.0	$ 0.7	$ 0.1
Fair value of stock vested			1.4	$ 0.6
Unrecognized compensation cost related to non-vested award	$ 4.1		$ 4.1
Cost expected to be recognized over weighted-average period, in years			1 year 10 months 24 days
Shares granted			112,000