Capital Stock (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Mar. 02, 2013	Mar. 03, 2012
Capital stock
Authorized shares of common stock	1,500,000	1,500,000
Authorized shares of preferred stock	20,000
Par value of common stock (in dollars per share)	$ 1	$ 1
Par value of preferred stock (in dollars per share)	$ 1	$ 1
Preferred Stock Series G
Capital stock
Authorized shares of preferred stock	2,000	2,000
Par value of preferred stock (in dollars per share)	$ 1	$ 1
Liquidation preference (in dollars per share)	$ 100	$ 100
Dividend rate of liquidation preference (as a percent)	7.00%
Preferred Stock Series H
Capital stock
Authorized shares of preferred stock	2,000	2,000
Par value of preferred stock (in dollars per share)	$ 1	$ 1
Liquidation preference (in dollars per share)	$ 100	$ 100
Dividend rate of liquidation preference (as a percent)	6.00%
Conversion rate (in dollars per share)	$ 5.50
Redemption percentage of the liquidation preference per share	105.00%