(Discontinued Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended		0 Months Ended			3 Months Ended
	Jan. 02, 2015	Jul. 04, 2014	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013	Jul. 31, 2014	Jul. 19, 2013	May 21, 2013	Mar. 28, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds for sale of business				$ (13)	$ 245
Balance as of March 28, 2014, net	1,669			1,669					1,667
Proceeds from divestiture of business, working capital adjustment		1
Proceeds from divestiture of business, purchase price adjustment		2
Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract]
Revenue	0		7	10	227
(Loss) income from discontinued operations, before taxes	0		(2)	(11)	10
Tax expense	0		1	0	6
Net (loss) income from discontinued operations	0		(3)	(11)	4
(Loss) gain on disposition, before taxes	0		(2)	(21)	102
Tax (benefit) expense	0		0	(3)	15
(Loss) gain on disposition, net of taxes	0		(2)	(18)	87
Income from discontinued operations, net of taxes	0		(5)	(29)	91
Impact of change in accounting methods [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of taxes			0		19
European Healthcare [Member] | European GBS - IS&S [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds for sale of business						3
Gain (Loss) on disposal of discontinued operations						(22)
Disposal group current assets						54
Disposal group cash						21
Balance as of March 28, 2014, net						0
Disposal group other noncurrent assets						25
Disposal group current liabilities						33
Disposal group noncurrent liabilities						23
NPS Applied Technology Division [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds for sale of business							178
Proceeds from divestiture of business, working capital adjustment							6
Net of cash divested							77
Flood-Insurance-Related Business Process Outsourcing Practice [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds for sale of business								43
Gain (Loss) on disposal of discontinued operations									(1)
Proceeds from divestiture of business, working capital adjustment								4	3
Net of cash divested								$ 25