CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS Parenthetical (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 28, 2012	Dec. 30, 2011	Dec. 28, 2012	Dec. 30, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 26	$ 0	$ 111	$ 0
Specified contract charge charged to revenue and excluded from Cost of services		204		204
Settlement charged to revenue and excluded from cost of services		42		42
Cost of services [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs	18		101
Selling, general and administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 8		$ 10