Pension Plans And Other Retirement Benefits (Changes In Funded And Unfunded Pension And Retirement Plan) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 29, 2011	Oct. 30, 2010	Oct. 29, 2011	Oct. 30, 2010
Pension Funded Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 8,893	$ 8,607	$ 25,393	$ 24,106
Interest cost	10,019	7,784	28,925	25,822
Expected return on plan assets	(12,275)	(10,051)	(36,794)	(30,032)
Amortization of prior service cost
Recognized actuarial losses	3,515	2,935	8,141	8,379
Total expense	10,152	9,275	25,665	28,275
Pension Unfunded Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	359	491	892	902
Interest cost	558	554	1,807	2,011
Expected return on plan assets
Amortization of prior service cost	1	20	3	61
Recognized actuarial losses	86	(682)	500	706
Total expense	$ 1,004	$ 383	$ 3,202	$ 3,680