INCOME TAXES - Unrecognized Tax Benefit (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unrecognized Tax Benefits [Roll Forward]
Gross unrecognized tax benefits - January 1	$ 58	$ 87	$ 121
Increases related to tax positions from prior years	1	1	3
Decreases related to tax positions from prior years	(5)	(1)	(15)
Increases related to tax provisions taken during the current year	1	2	7
Settlements with tax authorities	(4)	0	(22)
Lapses of statutes of limitation	(5)	(1)	(7)
Distributions to NCR Atleos	0	(30)	0
Total gross unrecognized tax benefits - December 31	$ 46	$ 58	$ 87

Unrecognized Tax Benefits, Decrease Resulting From Distributions To Discontinued Operation

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 217
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-217

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 740
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-Paragraph 10B
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-URI https://asc.fasb.org/1943274/2147482525/740-10-45-10B

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- Definition

Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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- Definition

Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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- Definition

Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

+ References

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