Reconciliation of Earnings and Number of Shares Used in Calculation of Basic and Diluted Earnings Per Share (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended					6 Months Ended				12 Months Ended
	Jun. 14, 2013		Mar. 22, 2013	Jun. 15, 2012		Jun. 14, 2013		Jun. 15, 2012		Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010
Computation of Basic Earnings Per Share
Net income	$ 30	[1]	$ 19	$ 5	[2]	$ 49	[1]	$ 13	[2]	$ 7	$ (172)	$ 59
Weighted average shares outstanding	35.4	[1]		34.3	[2]	35.3	[1]	34.2	[2]
Basic earnings per share	$ 0.87	[1]	$ 0.53	$ 0.16	[2]	$ 1.40	[1]	$ 0.39	[2]	$ 0.19	$ (5.12)	$ 1.74
Computation of Diluted Earnings Per Share
Net income	$ 30	[1]	$ 19	$ 5	[2]	$ 49	[1]	$ 13	[2]	$ 7	$ (172)	$ 59
Weighted average shares outstanding	35.4	[1]		34.3	[2]	35.3	[1]	34.2	[2]
Effect of dilutive securities
Employee stock options and SARs	0.7	[1]		1.1	[2]	0.7	[1]	1.0	[2]
Restricted stock units	0.5	[1]		0.7	[2]	0.6	[1]	0.7	[2]
Shares for diluted earnings per share	36.6	[1]		36.1	[2]	36.6	[1]	35.9	[2]
Diluted earnings per share	$ 0.85	[1]	$ 0.51	$ 0.15	[2]	$ 1.35	[1]	$ 0.37	[2]	$ 0.18	$ (5.12)	$ 1.74

[1] The computations of diluted earnings per share excludes approximately 229,000 shares of common stock, the maximum issuable upon the vesting of certain performance-based awards, because the performance conditions required for such shares to vest were not achieved by the end of the reporting period.

[2] The computations of diluted earnings per share excludes approximately 157,000 shares of common stock, the maximum issuable upon the vesting of certain performance-based awards, because the performance conditions required for such shares to vest were not achieved by the end of the reporting period.