CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Jan. 25, 2013	Jan. 27, 2012
Cash flows from operating activities:
Net income	$ 331.5	$ 424.7
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	255.5	210.5
Stock-based compensation	211.5	197.8
Accretion of discount and issuance costs on debt	44.0	38.7
Deferred income tax provision	(57.9)	(64.0)
Excess tax benefit from stock-based compensation	(53.0)	(80.7)
Other non-cash items, net	49.6	66.8
Changes in assets and liabilities, net of acquisitions of businesses:
Accounts receivable	193.1	55.8
Inventories	(11.4)	(8.8)
Other operating assets	(59.3)	(49.2)
Accounts payable	(16.0)	(10.4)
Accrued compensation and other current liabilities	(35.1)	(160.5)
Deferred revenue	62.7	234.5
Other operating liabilities	15.5	24.8
Net cash provided by operating activities	930.7	880.0
Cash flows from investing activities:
Purchases of investments	(1,548.3)	(1,718.9)
Maturities and sales of investments	1,752.4	1,697.7
Purchases of property and equipment	(239.7)	(282.9)
Acquisitions of businesses, net of cash acquired	(89.4)	(480.0)
Other investing activities, net	3.0	0
Net cash used in investing activities	(122.0)	(784.1)
Cash flows from financing activities:
Issuance of common stock	95.5	101.0
Repurchase and retirement of common stock	(410.0)	(600.0)
Excess tax benefit from stock-based compensation	53.0	80.7
Issuance of long-term debt, net	987.3	0
Other financing activities, net	(0.7)	3.1
Net cash provided by (used in) financing activities	725.1	(415.2)
Effect of exchange rate changes on cash and cash equivalents	(1.9)	(17.1)
Net increase (decrease) in cash and cash equivalents	1,531.9	(336.4)
Cash and cash equivalents:
Beginning of period	1,549.8	2,757.3
End of period	$ 3,081.7	$ 2,420.9