Restructuring and Other Exit Costs (Details) - USD ($) $ in Millions	3 Months Ended
Jun. 29, 2018	Mar. 29, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 27	$ 16
Remaining lease term of exited facilities		5 years
Exelis \| Engineering, selling and administrative expenses
Restructuring Cost and Reserve [Line Items]
Charges for integration and other costs	$ 5

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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No definition available.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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