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Amount of trailing expenses attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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Amount of costs of goods sold attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of gross profit attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of operating income (loss) attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation.

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Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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Acquisitions and Divestitures, Discontinued Operations (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Feb. 01, 2016	Sep. 29, 2017	Sep. 23, 2016	Sep. 29, 2017	Sep. 23, 2016
Discontinued Operations [Abstract]
Income from discontinued operations, net of income taxes		$ (1)	$ 0	$ (1)	$ 63
NSS [Member]
Discontinued Operations [Abstract]
Net sales					86
Cost of sales					(92)
Gain related to business divestiture					64
Operating income from discontinued operations					58
Income tax benefit					5
Income from discontinued operations, net of income taxes					$ 63
NSS [Member] \| Discontinued Operations, Disposed of by Sale [Member]
Discontinued Operations [Abstract]
Trailing expenses related to sale		$ 1
CACI International Inc [Member] \| Discontinued Operations, Disposed of by Sale [Member]
Discontinued Operations [Abstract]
Proceeds from sale of discontinued operations	$ 547