Financing Arrangements (Tables)

6 Months Ended

Oct. 26, 2012

Debt Disclosure [Abstract]

Equity and Debt Information for Senior Convertible Notes under Convertible Debt Guidance

(in millions)	October 26,		April 27,
	2012		2012
Carrying amount of the equity component	$	547	$	547
Principal amount of the 2013 Senior Convertible Notes	$	2,200	$	2,200
Unamortized discount		(44)		(90)
Net carrying amount	$	2,156	$	2,110

Interest Expense Amounts Related to Senior Convertible Notes

	Three months ended
(in millions, except interest rate)	October 26,			October 28,
	2012			2011
Effective interest rate		6.03	%		6.03	%
Interest cost related to contractual interest coupon	$	9		$	9
Interest cost related to amortization of the discount	$	23		$	21
	Six months ended
(in millions, except interest rate)	October 26,			October 28,
	2012			2011
Effective interest rate		6.03	%		6.03	%
Interest cost related to contractual interest coupon	$	18		$	18
Interest cost related to amortization of the discount	$	46		$	43