Restructuring and Other Charges (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ (72)	$ 384	$ 1,744
ISecG separation costs and other charges	0	249	63
2016 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	(72)	135	1,681
Restructuring and other charges	(72)	135	1,681
2016 Restructuring Program [Member] \| Employee severance and benefits arrangements [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	(72)	70	1,652
2016 Restructuring Program [Member] \| Pension settlement charges [Member]
Restructuring Cost and Reserve [Line Items]
Pension settlement charges	0	25	0
2016 Restructuring Program [Member] \| Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 0	$ 40	$ 29

Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

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Amount of other expense that is infrequent in occurrence or unusual in nature.

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Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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Amount of restructuring charges, remediation cost, and asset impairment loss.

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