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DESCRIPTION OF BUSINESS (Details)	1 Months Ended	3 Months Ended
	Mar. 27, 2020 USD ($)	Mar. 31, 2020 USD ($) segment	Mar. 31, 2019 USD ($)
Subsequent Event [Line Items]
Reporting unit, percentage of fair value in excess of carrying value (less than)		20.00%
Number of reportable segments | segment		3
Aggregate principal balance		$ 11,000,000,000.0
Net transfers to UTC	$ 10,900,000,000	$ 10,948,000,000	$ 89,000,000

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Net Transfers To Parent

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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- Definition

Percentage of fair value of reporting unit in excess of carrying amount.

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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