CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended
	Oct. 26, 2012	Oct. 28, 2011
Cash flows from operating activities:
Net income	$ 173.4	$ 305.1
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	169.1	136.9
Stock-based compensation	144.2	121.1
Accretion of discount and issuance costs on Notes	28.7	25.2
Deferred income tax provision	(50.0)	(71.2)
Tax benefit from stock-based compensation	28.2	79.1
Excess tax benefit from stock-based compensation	(43.6)	(84.7)
Other non-cash items, net	10.1	(3.2)
Changes in assets and liabilities, net of acquisition of business:
Accounts receivable	212.9	115.6
Inventories	(51.7)	(18.3)
Other operating assets	(16.9)	(12.5)
Accounts payable	13.9	45.6
Accrued compensation and other current liabilities	(15.9)	(173.1)
Deferred revenue	(42.6)	126.9
Other operating liabilities	5.8	18.3
Net cash provided by operating activities	565.6	610.8
Cash flows from investing activities:
Purchases of investments	(1,243.0)	(1,306.6)
Maturities and sales of investments	1,336.4	1,347.0
Purchases of property and equipment	(129.0)	(191.6)
Acquisition of business	0	(480.0)
Other investing activities, net	2.8	2.0
Net cash used in investing activities	(32.8)	(629.2)
Cash flows from financing activities:
Issuance of common stock	45.1	51.9
Repurchase and retirement of common stock	(348.3)	(600.0)
Excess tax benefit from stock-based compensation	43.6	84.7
Other financing activities, net	(0.3)	1.6
Net cash used in financing activities	(259.9)	(461.8)
Effect of exchange rate changes on cash and cash equivalents	(5.9)	(8.1)
Net increase (decrease) in cash and cash equivalents	267.0	(488.3)
Cash and cash equivalents:
Beginning of period	1,549.8	2,757.3
End of period	$ 1,816.8	$ 2,269.0