EMPLOYEE BENEFIT PLANS - Fair value of plan assets (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	$ 1,021	$ 990
International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	795	714
Not Subject to Leveling \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	1,012	983
Not Subject to Leveling \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	212	496
Common and commingled trusts - Equities \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	319	636
Common and commingled trusts - Equities \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	157	134
Common and commingled trusts - Equities \| Not Subject to Leveling \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	319	636
Common and commingled trusts - Equities \| Not Subject to Leveling \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	111	134
Government securities \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Government securities \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	79
Government securities \| Not Subject to Leveling \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Government securities \| Not Subject to Leveling \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Corporate debt \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Corporate debt \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	52	52
Corporate debt \| Not Subject to Leveling \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Corporate debt \| Not Subject to Leveling \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Common and commingled trusts - Bonds \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	204	177
Common and commingled trusts - Bonds \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	281	326
Common and commingled trusts - Bonds \| Not Subject to Leveling \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	204	177
Common and commingled trusts - Bonds \| Not Subject to Leveling \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	93	326
Real estate \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Real estate \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	199	165
Real estate \| Not Subject to Leveling \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Real estate \| Not Subject to Leveling \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Common and commingled trusts - Short Term Investments \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	19	9
Common and commingled trusts - Short Term Investments \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	8	18
Common and commingled trusts - Short Term Investments \| Not Subject to Leveling \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	19	9
Common and commingled trusts - Short Term Investments \| Not Subject to Leveling \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	8	18
Partnership/joint venture interests - Other \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	242	48
Partnership/joint venture interests - Other \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Partnership/joint venture interests - Other \| Not Subject to Leveling \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	242	41
Partnership/joint venture interests - Other \| Not Subject to Leveling \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Partnership/joint venture interests - Real estate \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	125
Partnership/joint venture interests - Real estate \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Partnership/joint venture interests - Real estate \| Not Subject to Leveling \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	125
Partnership/joint venture interests - Real estate \| Not Subject to Leveling \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Hedge Funds \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	103	113
Hedge Funds \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Hedge Funds \| Not Subject to Leveling \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	103	113
Hedge Funds \| Not Subject to Leveling \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Money market funds \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	9	7
Money market funds \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	18	18
Money market funds \| Not Subject to Leveling \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	7
Money market funds \| Not Subject to Leveling \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	18
Insurance products \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Insurance products \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	1	1
Insurance products \| Not Subject to Leveling \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Insurance products \| Not Subject to Leveling \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	9	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	18	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Common and commingled trusts - Equities \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Common and commingled trusts - Equities \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Government securities \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Government securities \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Corporate debt \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Corporate debt \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Common and commingled trusts - Bonds \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Common and commingled trusts - Bonds \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Real estate \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Real estate \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Common and commingled trusts - Short Term Investments \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Common and commingled trusts - Short Term Investments \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Partnership/joint venture interests - Other \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Partnership/joint venture interests - Other \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Partnership/joint venture interests - Real estate \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Partnership/joint venture interests - Real estate \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Hedge Funds \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Hedge Funds \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Money market funds \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	9	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Money market funds \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	18	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Insurance products \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Insurance products \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	366	53
Significant Other Observable Inputs (Level 2) \| Common and commingled trusts - Equities \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Common and commingled trusts - Equities \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	46	0
Significant Other Observable Inputs (Level 2) \| Government securities \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Significant Other Observable Inputs (Level 2) \| Government securities \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	79
Significant Other Observable Inputs (Level 2) \| Corporate debt \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Corporate debt \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	52	52
Significant Other Observable Inputs (Level 2) \| Common and commingled trusts - Bonds \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Common and commingled trusts - Bonds \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	188	0
Significant Other Observable Inputs (Level 2) \| Real estate \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Real estate \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Common and commingled trusts - Short Term Investments \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Common and commingled trusts - Short Term Investments \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Partnership/joint venture interests - Other \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Partnership/joint venture interests - Other \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Partnership/joint venture interests - Real estate \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Significant Other Observable Inputs (Level 2) \| Partnership/joint venture interests - Real estate \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Significant Other Observable Inputs (Level 2) \| Hedge Funds \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Hedge Funds \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Money market funds \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Money market funds \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Insurance products \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Other Observable Inputs (Level 2) \| Insurance products \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	1	1
Significant Unobservable Inputs (Level 3) \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	7
Significant Unobservable Inputs (Level 3) \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	199	165
Significant Unobservable Inputs (Level 3) \| Common and commingled trusts - Equities \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Common and commingled trusts - Equities \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Government securities \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Significant Unobservable Inputs (Level 3) \| Government securities \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Significant Unobservable Inputs (Level 3) \| Corporate debt \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Corporate debt \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Common and commingled trusts - Bonds \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Common and commingled trusts - Bonds \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Real estate \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Real estate \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	199	165
Significant Unobservable Inputs (Level 3) \| Common and commingled trusts - Short Term Investments \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Common and commingled trusts - Short Term Investments \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Partnership/joint venture interests - Other \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	7
Significant Unobservable Inputs (Level 3) \| Partnership/joint venture interests - Other \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Partnership/joint venture interests - Real estate \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Significant Unobservable Inputs (Level 3) \| Partnership/joint venture interests - Real estate \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Significant Unobservable Inputs (Level 3) \| Hedge Funds \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Hedge Funds \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Money market funds \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Money market funds \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Insurance products \| United States
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	0
Significant Unobservable Inputs (Level 3) \| Insurance products \| International Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	$ 0	$ 0

NCR Atleos Corp 10-K