Company Owned Life Insurance (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Nov. 22, 2013	Nov. 23, 2012	Feb. 22, 2013
Investment [Line Items]
Company-owned life insurance	$ 152.1		$ 225.8
COLI Income	1.3	7.0
Cost of Sales [Member]
Investment [Line Items]
COLI Income	0.6	0.8
Operating Expense [Member]
Investment [Line Items]
COLI Income	2.5	3.2
Operating Income [Member]
Investment [Line Items]
COLI Income	3.1	4.0
Investment Income [Member]
Investment [Line Items]
COLI Income	(1.8)	3.0
Whole Life [Member]
Investment [Line Items]
Company-owned life insurance	112.7		109.6
COLI Income	3.1	4.0
Whole Life [Member] | Cost of Sales [Member]
Investment [Line Items]
COLI Income	0.6	0.8
Whole Life [Member] | Operating Expense [Member]
Investment [Line Items]
COLI Income	2.5	3.2
Whole Life [Member] | Operating Income [Member]
Investment [Line Items]
COLI Income	3.1	4.0
Whole Life [Member] | Investment Income [Member]
Investment [Line Items]
COLI Income	0	0
Variable Life [Member]
Investment [Line Items]
Company-owned life insurance	39.4		116.2
COLI Income	(1.8)	3.0
Variable Life [Member] | Cost of Sales [Member]
Investment [Line Items]
COLI Income	0	0
Variable Life [Member] | Operating Expense [Member]
Investment [Line Items]
COLI Income	0	0
Variable Life [Member] | Operating Income [Member]
Investment [Line Items]
COLI Income	0	0
Variable Life [Member] | Investment Income [Member]
Investment [Line Items]
COLI Income	$ (1.8)	$ 3.0