Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Fair value amount of debt instrument that was repurchased.

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Face (par) amount of the original debt instrument that was repurchased.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Gross amount of debt extinguished.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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DEBT - Long-term Debt Repaid (Details) - USD ($)		3 Months Ended			12 Months Ended
DEBT - Long-term Debt Repaid (Details) - USD ($)	Nov. 06, 2017	Jun. 29, 2018	Dec. 29, 2017	Dec. 30, 2016	Jun. 29, 2018	Jun. 30, 2017	Jun. 22, 2018	Mar. 30, 2018	Apr. 27, 2015
Debt Instrument [Line Items]
Loss on extinguishment of debt					$ 24,000,000	$ 0
Long-term debt		$ 3,740,000,000			3,740,000,000	3,945,000,000
Fixed-rate debt
Debt Instrument [Line Items]
Make-whole redemption price of debt redeemed							$ 844,000,000
Loss on extinguishment of debt		22,000,000			27,000,000
Long-term debt		3,190,000,000			3,190,000,000	$ 3,640,000,000
Debt issued									$ 2,400,000,000.0
Fixed-rate debt \| 4.4% 2020 Notes
Debt Instrument [Line Items]
Aggregate principal amount of debt redeemed							$ 400,000,000
Debt interest rate percentage						4.40%	4.40%
Long-term debt		0			0	$ 400,000,000
Fixed-rate debt \| 2021 Notes
Debt Instrument [Line Items]
Aggregate principal amount of debt redeemed							$ 400,000,000
Debt interest rate percentage						5.55%	5.55%
Long-term debt		$ 0			$ 0	$ 400,000,000
Fixed-rate debt \| 1.999% notes, due April 27, 2018
Debt Instrument [Line Items]
Debt interest rate percentage		1.999%			1.999%	1.999%
Repayment of debt		$ 500,000,000
Long-term debt		0			$ 0	$ 500,000,000
Fixed-rate debt \| 4.25% notes, due October 1, 2016 \| Exelis
Debt Instrument [Line Items]
Debt interest rate percentage				4.25%
Repayments of long-term debt				$ 250,000,000
Variable-rate term loans
Debt Instrument [Line Items]
Long-term debt		550,000,000			550,000,000	305,000,000
Variable-rate term loans \| Term loan, 5-year tranche, due May 29, 2020
Debt Instrument [Line Items]
Repayment of debt			$ 253,000,000
Long-term debt		0	1,300,000,000		0	$ 269,000,000
Unamortized debt issuance costs recognized as loss on extinguishment of debt			$ 1,000,000
Debt instrument term	5 years		5 years			5 years
Debt issued								$ 1,300,000,000.0
Variable-rate term loans \| Term loan, 3-year tranche, due May 29, 2018
Debt Instrument [Line Items]
Long-term debt		$ 0			0	$ 36,000,000
Debt instrument term		3 years				3 years
Extinguishment of debt		$ 36,000,000			$ 305,000,000
Variable-rate term loans \| Variable Rate Term Loan Agreement
Debt Instrument [Line Items]
Repayments of long-term debt						$ 313,000,000