Restructuring and Other Exit Cost (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 30, 2018	Jun. 30, 2017
Business Exit \| Non-core Commercial Business \| Engineering, selling and administrative expenses
Restructuring Cost and Reserve [Line Items]
Business charges in connection with transition and exit costs	$ 45
Restructuring reserve	21
Discontinued Operations, Disposed of by Means Other than Sale
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	$ 26	$ 43
Exelis
Restructuring Cost and Reserve [Line Items]
Charges for integration and other costs		$ 58

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.

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-Publisher FASB
-Name Accounting Standards Codification
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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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.

+ References

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Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

+ References

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