Discontinued Operations - Income Statement (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 29, 2017	Sep. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued operations, net of income taxes	$ (6)	$ 15
Discontinued Operations, Held-for-sale or Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue from product sales and services	0	351
Cost of product sales and services	0	(289)
Engineering, selling and administrative expenses	0	(38)
Non-operating loss	(3)	0
Income (loss) before income taxes	(3)	24
Loss on sale of discontinued operations (1)	0
Income tax expense	(3)	(7)
Discontinued operations, net of income taxes	(6)	15
IT Services | Discontinued Operations, Held-for-sale or Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue from product sales and services	0	275
Cost of product sales and services	0	(234)
Engineering, selling and administrative expenses	0	(24)
Non-operating loss	(2)	0
Income (loss) before income taxes	(2)	17
Loss on sale of discontinued operations (1)	0	(2)
Income tax expense	(3)	(6)
Discontinued operations, net of income taxes	(5)	9
CapRock | Discontinued Operations, Held-for-sale or Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue from product sales and services	0	76
Cost of product sales and services	0	(55)
Engineering, selling and administrative expenses	0	(14)
Non-operating loss	(1)	0
Income (loss) before income taxes	(1)	7
Income tax expense	0	(1)
Discontinued operations, net of income taxes	$ (1)	$ 6