Date when the acquirer obtains control of the acquiree, in YYYY-MM-DD format.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=123586518&loc=d3e848-128460

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 805
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-Section 25
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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Balance Type:	na
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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Balance Type:	credit
Period Type:	duration

- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

+ Details

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Balance Type:	credit
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- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

The net cash inflow or outflow associated with the aggregate amount of adjustment to the purchase price of a previous acquisition.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

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ACQUISITIONS Narrative (Details) $ in Millions				9 Months Ended
ACQUISITIONS Narrative (Details) $ in Millions	Oct. 30, 2020 USD ($)	Apr. 20, 2020 USD ($)	Feb. 28, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($) NumberAcquisitions
Business Acquisition [Line Items]
Number of Businesses Acquired \| NumberAcquisitions					2
Revenue of Acquiree since Acquisition Date, Actual					$ 12
Earnings or Loss of Acquiree since Acquisition Date, Actual					$ (1)
Payments for (Proceeds from) Previous Acquisition				$ 5
Defense Electronics [Member] \| Pacific Star Communications, Inc. (PacStar)
Business Acquisition [Line Items]
Effective Date of Acquisition	Oct. 30, 2020
Acquisition of businesses, net of cash acquired	$ 406
Defense Electronics [Member] \| Integrated Air Defense System (IADS) [Member]
Business Acquisition [Line Items]
Effective Date of Acquisition		Apr. 20, 2020
Acquisition of businesses, net of cash acquired		$ 29
Naval & Power [Member] \| Dyna-Flo Valve Services Ltd. (Dyna-Flo) [Member]
Business Acquisition [Line Items]
Effective Date of Acquisition			Feb. 28, 2020
Acquisition of businesses, net of cash acquired			$ 60