CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 24, 2014	Jan. 25, 2013	Jan. 24, 2014	Jan. 25, 2013
Net income	$ 192.1	$ 158.1	$ 440.5	$ 331.5
Other comprehensive income (loss):
Foreign currency translation adjustments	(2.7)	1.5	0.9	(0.1)
Defined benefit obligation adjustments	0.1	0	0.3	0.2
Unrealized gains (losses) on available-for-sale securities:
Unrealized holding gains (losses) arising during the period	1.6	(1.9)	(2.4)	4.7
Income tax effect on unrealized holding gains (losses)	0.1	0.3	1.1	0
Reclassification adjustments for losses (gains) included in net income	0	0.1	(1.1)	(0.5)
Unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) arising during the period	1.5	(2.7)	(2.0)	(1.8)
Reclassification adjustments for losses (gains) included in net income	(0.2)	3.1	1.2	1.2
Other comprehensive income (loss)	0.4	0.4	(2.0)	3.7
Comprehensive income	$ 192.5	$ 158.5	$ 438.5	$ 335.2