Long-Term Debt (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
	Dec. 28, 2010 Y	Apr. 03, 2012 M rent
Long-Term Debt
Line of credit facility term (in years)	5
Maximum commitments	$ 200
Maximum commitments, letter of credit subfacility	35
Additional available credit	50
Credit facility, floating interest rate basis		LIBOR
Multiplier of rent used to compute Adjusted Debt		8
Trailing period for which EBITDAR is computed (in months)		12
Financial covenant, Adjusted Debt Ratio, maximum		4.0
Financial covenant, EBITDAR Ratio, minimum		1.9
Adjusted Debt Ratio		2.7
EBITDAR Ratio		2.8
Net availability for borrowings		182
Outstanding debt		0
Outstanding standby letters of credit		$ 18
Minimum
Long-term debt
Credit facility, basis spread on variable rate, (as a percent)		1.75%
Commitment fee (as a percent)		0.30%
Maximum
Long-term debt
Credit facility, basis spread on variable rate, (as a percent)		2.25%
Commitment fee (as a percent)		0.40%