Selling price EBP, Investment Sold, Plan Interest in Master Trust, Selling Price Entity Tax Identification Number Entity Tax Identification Number Investments at fair value EBP, Investment, Fair Value Maximum Maximum [Member] Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Mutual funds Mutual Fund [Member] Compensation Tier [Domain] Compensation Tier [Domain] Compensation Tier [Domain] EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Maximum annual compensation contribution EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Maximum borrowing term for note receivable for primary residence EBP, Note Receivable From Participant, Primary Residence, Maximum Borrowing Term EBP, Note Receivable From Participant, Primary Residence, Maximum Borrowing Term Note receivable from participant, maximum borrowing amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount FAIR VALUE MEASUREMENTS EBP, Investment, Fair Value and NAV [Text Block] Note receivable from participant, minimum borrowing amount EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Maximum after-tax contributions EBP, Participant Contribution, Maximum After-Tax Contribution to Eligible Compensation, Percentage EBP, Participant Contribution, Maximum After-Tax Contribution to Eligible Compensation, Percentage Plan's Interest in Master Trust Balances EBP, Nonconsolidated, Plan Interest in Master Trust [Member] Level 1 Fair Value, Inputs, Level 1 [Member] EBP, Investment, Fair Value and NAV [Abstract] Assets EBP, Asset [Abstract] Revenue credit allocated to participant accounts EBP, Revenue Credit EBP, Revenue Credit Statistical Measurement [Axis] Statistical Measurement [Axis] Additions to net assets attributed to: EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Payment of Benefits EBP, Payment to Participant [Policy Text Block] EBP, Master Trust [Line Items] EBP, Master Trust [Line Items] Unisys Corporation Savings Plan Master Trust EBP, Asset Held for Investment, Plan Interest in Master Trust, Current Value Amendment Flag Amendment Flag Basis of Accounting EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Total investments in Master Trust EBP, Investment, Plan Interest in Master Trust, Fair and Contract Value Number of shares held by the Master Trust (in shares) EBP, Investment, Number of Shares EBP PR Plan EBP PR Plan [Member] EBP PR Plan Crediting interest rate EBP, Investment, Interest Rate EBP, Description of Plan and Accounting Change [Abstract] Receivables: EBP, Receivable [Abstract] Summary of Master Trust's Assets at Fair Value EBP, Investment, Fair Value and NAV [Table Text Block] Investments [Domain] Investments [Domain] EBP, Master Trust [Abstract] Investments at contract value EBP, Investment, Plan Interest in Master Trust, Contract Value Use of Estimates EBP, Use of Estimate [Policy Text Block] SCHEDULE H, LINE 4i - SCHEDULE OF ASSETS EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] RISKS AND UNCERTAINTIES EBP, Risk and Uncertainty [Text Block] Employer EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Shares purchased (in shares) EBP, Investment, Purchased, Number of Shares Shares purchased EBP, Investment Acquired, Plan Interest in Master Trust, Purchase Price Minimum Minimum [Member] Investment Type [Axis] Investment Type [Axis] Interest earned on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Compensation Tier Two Compensation Tier Two [Member] Compensation Tier Two Total contributions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Employee EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Interest and dividends EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] EBP, Plan Number EBP, Plan Number EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] PLAN DESCRIPTION EBP, Description of Plan [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] Unisys Common Stock Fund EBP, Employer, Common Stock [Member] Vesting period EBP, Employer Contribution Vesting Service Period EBP, Employer Contribution Vesting Service Period EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] Total additions EBP, Change in Net Asset Available for Benefit, Increase Allowance for credit losses EBP, Note Receivable from Participant, Allowance for Credit Loss Investment income: EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Administrative and other expenses EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Transfers out (benefit payments, administrative fees, participant loans) EBP, Change in Net Asset Available for Benefit, Transfer From Fund within ESOP EBP, Change in Net Asset Available for Benefit, Transfer From Fund within ESOP Investments at contract value EBP, Investment, Contract Value Document Information [Line Items] Document Information [Line Items] EBP, Risk and Uncertainty [Line Items] EBP, Risk and Uncertainty [Line Items] EBP, Risk and Uncertainty [Table] EBP, Risk and Uncertainty [Table] MASTER TRUST EBP, Master Trust [Text Block] Transfers in (contributions, loan repayments) EBP, Change in Net Asset Available for Benefit, Transfer to Fund within ESOP EBP, Change in Net Asset Available for Benefit, Transfer to Fund within ESOP Participant compensation matched, percentage EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Level 2 Fair Value, Inputs, Level 2 [Member] Shares sold (in shares) EBP, Investment, Sold, Number of Shares EBP, Tax Status [Table] EBP, Tax Status [Table] Net increase EBP, Change in Net Asset Available for Benefit, Increase (Decrease) RELATED-PARTY AND PARTY-IN-INTEREST TRANSACTIONS EBP, Related Party and Party-in-Interest Transactions [Text Block] Net increase before transfers EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Before Plan Transfers EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Before Plan Transfers Total net assets EBP, Investment, Fair and Contract Value Minimum balance required EBP, Automatic Distribution to Participant Threshold EBP, Automatic Distribution to Participant Threshold EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Total receivables EBP, Receivable Employer contributions EBP, Employer Contribution, Receivable Net (depreciation) appreciation EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Unrealized Gain (Loss) on Investment Investments in Master Trust: EBP, Investment, Fair Value [Abstract] Benefits paid to participants EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Investments at fair value EBP, Investment, Plan Interest in Master Trust, Fair Value Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] EBP, Tax Status [Abstract] Net investment income from Master Trust EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Change in Plan Interest in Master Trust Notes receivable from participants EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Investment Valuation and Income Recognition EBP, Investment [Policy Text Block] EBP, Master Trust [Table] EBP, Master Trust [Table] Document Type Document Type Entity Central Index Key Entity Central Index Key Weighted Average Weighted Average [Member] Notes receivable interest rate EBP, Asset Held for Investment, Participant Loan, Interest Rate Common collective trusts Common Collective Trust [Member] EBP, Risk and Uncertainty [Abstract] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] EBP, Subsequent Event [Table] EBP, Subsequent Event [Table] Deductions from net assets attributed to: EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Forfeitures used to reduce employer contributions EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Revenue credit EBP, Change in Net Asset Available for Benefit, Increase From Revenue Credit EBP, Change in Net Asset Available for Benefit, Increase From Revenue Credit Notes receivable from participants EBP, Note Receivable from Participant Master Trust Balances EBP, Nonconsolidated, Master Trust [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] SIGNIFICANT ACCOUNTING POLICIES EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name Net Assets and the Changes in Net Assets of the Master Trust EBP, Master Trust [Table Text Block] EBP, Subsequent Event [Abstract] SUBSEQUENT EVENTS EBP, Subsequent Event [Text Block] TAX STATUS OF THE PLAN EBP, Tax Status [Text Block] Note receivable from participant, maximum borrowing to vested account balance, percentage EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage EBP, Subsequent Event [Line Items] EBP, Subsequent Event [Line Items] Document Information [Table] Document Information [Table] Maximum pre-tax contributions EBP, Participant Contribution, Maximum Pre-tax Contribution to Eligible Compensation, Percentage EBP, Participant Contribution, Maximum Pre-tax Contribution to Eligible Compensation, Percentage Notes Receivable from Participants EBP, Note Receivable from Participant [Policy Text Block] EBP 004 EBP 004 [Member] EBP 004 Total investment income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] Compensation Tier [Axis] Compensation Tier [Axis] Compensation Tier EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Level 3 Fair Value, Inputs, Level 3 [Member] Installment term EBP, Termination, Installment Term EBP, Termination, Installment Term Note receivable borrowing term EBP, Note Receivable From Participant, Borrowing Term EBP, Note Receivable From Participant, Borrowing Term Net assets available for benefits Beginning of year End of year EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Matching percentage EBP, Employer Contribution, Matching Percentage EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] Compensation Tier One Compensation Tier One [Member] Compensation Tier One EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items]