Business Combinations (Tables)

3 Months Ended

Jul. 29, 2011

Fiscal 2012 Acquisition [Member] | Engenio External Storage Systems Business [Member]

Purchase Price Allocation To Estimated Assets And Liabilities Based On Estimated Fair Values

Current assets	$	49.8
Property and equipment		33.3
Identified intangible assets		272.1
Goodwill		143.7
Other assets		9.3
Total assets acquired		508.2
Current liabilities		(20.9	)
Other liabilities		(7.3	)
Total purchase price	$	480.0

Identified Intangible Assets

	Fair Value		Useful Life (Years)
Developed technology	$	216.0		5
Customer contracts/relationships		45.0		2
Trademarks and trade names		7.0		2
Order backlog		2.5		0
Covenant not to compete		1.6		3
Total identified intangible assets	$	272.1

Pro Forma Condensed Combined Financial Information

	Three Months Ended
	July 29, 2011		July 30, 2010
Net revenues	$	1,466.8	$	1,322.7
Net income	$	145.9	$	138.4

Acquisition Related Expenses

	Three Months Ended
	July 29, 2011
Acquisition related expense	$	2.2

Fiscal 2011 Acquisitions [Member]

Purchase Price Allocation To Estimated Assets And Liabilities Based On Estimated Fair Values

	Akorri		Bycast
Cash	$	0.7	$	5.7
Identified intangible assets		22.0		23.6
Goodwill		23.3		56.0
Deferred income taxes		9.9		(3.9	)
Other assets, net		6.4		2.4
Total purchase price	$	62.3	$	83.8

Summary Of Purchase Price Components And Equity Interests Acquired

	Akorri			Bycast
Acquisition date	January 31, 2011			May 13, 2010
Percentage of equity interest acquired		100	%		100	%
Total purchase price	$	62.3		$	83.8
Cash component of purchase price	$	62.3		$	80.5
Fair value of vested options assumed	$	0.0		$	3.3
Purchase price held in escrow to secure obligations of acquired entity	$	7.9		$	13.1
Release of escrow (number of years subsequent to acquisition date)		1.5			1.5