Employees' Stock Incentive Plans and Management Incentive Plans (Tables)

3 Months Ended

Jul. 29, 2012

Stock Option and Restricted Stock Plans [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

	First Quarter Ended
	July 29, 2012		July 27, 2011
	(In millions)
Pre-tax compensation cost	$	6.9	$	6.0
Tax benefit	2.1		1.7
After-tax compensation cost	$	4.8	$	4.3

LTPP [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

	First Quarter Ended
	July 29, 2012		July 27, 2011
	(In millions)
Pre-tax compensation cost	$	8.7	$	5.6
Tax benefit	3.0		1.9
After-tax compensation cost	$	5.7	$	3.7