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Benefit Plans - Weighted Average Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit Cost (Detail)	12 Months Ended
	Feb. 23, 2013	Feb. 25, 2012	Feb. 26, 2011
Benefit obligation assumptions:
Discount rate	4.25%	4.55%	5.60%
Rate of compensation increase	2.00%	2.00%	2.00%
Net periodic benefit cost assumptions:
Discount rate	4.55%	5.60%	6.00%
Rate of compensation increase	2.00%	2.00%	3.00%
Expected return on plan assets	7.25%	7.50%	7.75%

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

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