Benefit Plans - Asset Allocation Targets and Actual Allocation of Pension Plan Assets (Detail)	12 Months Ended
	Feb. 22, 2014	Feb. 23, 2013
Defined Benefit Plan Disclosure [Line Items]
Plan assets allocation, Total	100.00%	100.00%
Target allocation percentage of assets	100.00%
Domestic equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets allocation, Total	30.20%	32.90%
Target allocation percentage of assets	29.60%
International equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets allocation, Total	14.10%	15.30%
Target allocation percentage of assets	13.70%
Private equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets allocation, Total	5.50%	5.40%
Target allocation percentage of assets	5.60%
Fixed income [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets allocation, Total	41.30%	37.30%
Target allocation percentage of assets	42.30%
Real estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets allocation, Total	8.90%	9.10%
Target allocation percentage of assets	8.80%