Fair Value Measurements (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 30, 2012		Apr. 01, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill cumulative - effect adjustment in accumulated deficit	$ 19	[1]
Impairment of intangible assets	4		27
Loss on early extinguishment of debt			16
Convertible Senior Notes 0.75% [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate principal amount repurchased			500
Stated interest rate			0.75%
Net book value of convertible senior notes			481
Sale of note hedges back to counterparties			13
Loss on early extinguishment of debt			16
Fair value of the liability component			$ 497

[1] Due to the adoption of new authoritative guidance at the beginning of fiscal 2012, we were required to perform a goodwill impairment test for our Services reporting unit. As a result, we recognized an impairment loss of $19 million which was recorded to beginning Accumulated deficit as a cumulative-effect adjustment.