Financing Arrangements (Tables)

9 Months Ended

Jan. 27, 2012

Debt Disclosure [Abstract]

Equity and debt information for Senior Convertible Notes under the convertible debt guidance

	2013 Senior Convertible Notes
(in millions)	January 27,		April 29,
	2012		2011
Carrying amount of the equity component	$	547	$	547
Principal amount of the 2013 Senior Convertible Notes	$	2,200	$	2,200
Unamortized discount		(112)		(177)
Net carrying amount	$	2,088	$	2,023

Interest rate and interest expense amounts related to Senior Convertible Notes

	2011 Senior Convertible Notes						2013 Senior Convertible Notes
	Three months ended						Three months ended
(in millions, except interest rate)	January 27,			January 28,			January 27,			January 28,
	2012			2011			2012			2011
Effective interest rate		-	%		5.97	%		6.03	%		6.03	%
Interest cost related to contractual interest coupon	$	-		$	8		$	9		$	9
Interest cost related to amortization of the discount	$	-		$	24		$	22		$	21
	2011 Senior Convertible Notes						2013 Senior Convertible Notes
	Nine months ended						Nine months ended
(in millions, except interest rate)	January 27,			January 28,			January 27,			January 28,
	2012			2011			2012			2011
Effective interest rate		-	%		5.97	%		6.03	%		6.03	%
Interest cost related to contractual interest coupon	$	-		$	25		$	27		$	27
Interest cost related to amortization of the discount	$	-		$	70		$	65		$	61