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.

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.

+ References + Details

Discontinued Operations (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
Discontinued Operations (Narrative) (Details) - USD ($)	Oct. 04, 2019	Sep. 28, 2018	Oct. 04, 2019	Sep. 28, 2018	Aug. 08, 2019
Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations	$ 750,000,000	$ 54,000,000	$ 741,000,000	$ 66,000,000
Revenue from discontinued operations	576,000,000	567,000,000	1,173,000,000	1,116,000,000
Tax benefit in discontinued operation	637,000,000	(9,000,000)	604,000,000	(29,000,000)
Enterprise Security \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration from sale of discontinued operations					$ 10,700,000,000
Enterprise Security \| Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Tax benefit in discontinued operation	665,000,000		665,000,000
Veritas \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations	$ 0	0	$ 0	5,000,000
Revenue from discontinued operations		$ 4,000,000		$ 9,000,000