Retirement Benefit Plans (Tables)

9 Months Ended

Jan. 27, 2012

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Periodic Benefit Cost

	U.S. Pension Benefits				Non-U.S. Pension Benefits					Post-Retirement Benefits
	Three months ended				Three months ended					Three months ended
	January 27,		January 28,		January 27,		January 28,			January 27,		January 28,
(in millions)	2012		2011		2012		2011			2012		2011
Service cost	$	23	$	22	$	11	$	9		$	5	$	5
Interest cost		22		19		7		6			4		4
Expected return on plan assets		(30)		(26)		(9)		(6)			(4)		(3)
Amortization of net actuarial loss		11		8		1		1			1		1
Net periodic benefit cost	$	26	$	23	$	10	$	10		$	6	$	7
	U.S. Pension Benefits				Non-U.S. Pension Benefits					Post-Retirement Benefits
	Nine months ended				Nine months ended					Nine months ended
	January 27,		January 28,		January 27,		January 28,			January 27,		January 28,
(in millions)	2012		2011		2012		2011			2012		2011
Service cost	$	69	$	66	$	33	$	27		$	15	$	15
Interest cost		66		57		21		18			12		12
Expected return on plan assets		(90)		(78)		(27)		(18)			(12)		(9)
Amortization of net actuarial loss		33		24		3		3			3		3
Net periodic benefit cost	$	78	$	69	$	30	$	30	$		18	$	21