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I Merit Inc. [Member] I Merit Inc. 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(in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Basis of Preparation Basis of Accounting, Policy [Policy Text Block] Accounts receivable, including unbilled receivables Accounts Receivable, before Allowance for Credit Loss Sublease income Sublease Income Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Current portion of long-term borrowings Current portion of long-term borrowings Long-Term Debt, Current Maturities Weighted average remaining lease term (in years) Weighted-Average Remaining Lease Term [Abstract] Weighted-Average Remaining Lease Term [Abstract] Total finance lease cost Finance Lease, Cost Finance Lease, Cost Less: 58,356,813 shares as of June 30, 2026 and 52,425,538 shares as of December 31, 2025, held in treasury, at cost Treasury Stock, Value Recent Accounting 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General and administrative expenses General and administrative expenses General and Administrative Expense Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Share Match Units Share Match Units [Member] Share Match Units Number of pending cases Loss Contingency, Pending Claims, Number Hedging Designation [Domain] Hedging Designation [Domain] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Operating cash outflows for finance leases Finance Lease, Interest Payment on Liability Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Other commitment Other Commitment Payable to statutory authorities Statutory Authority Payables, Current Statutory Authority Payables, Current Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Number of options, vested and exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Indefinite-lived intangible assets: Indefinite lived intangible assets [Abstract] Indefinite lived intangible assets [Abstract] Others, net Other Noncash Income (Expense) Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Entity Filer Category Entity Filer Category Short-term investments Short-term investments Short-Term Investments Expected return on plan assets, percentage Defined Benefit Plan, Expected Return (Loss) On Plan Assets, Percentage Defined Benefit Plan, Expected Return (Loss) On Plan Assets, Percentage Performance based stock awards Performance Based Stock Awards [Member] Performance Based Stock Awards [Member] Finance Leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Contingent consideration term (in years) Business Acquisition Contingent Consideration Arrangement Term Business Acquisition Contingent Consideration Arrangement Term Derivatives not designated as hedging instruments Not Designated as Hedging Instrument [Member] Units vested for which the underlying common stock is yet to be issued (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number Accelerated Share Repurchase Agreement, ASR Agreement Accelerated Share Repurchase Agreement, ASR Agreement [Member] Accelerated Share Repurchase Agreement, ASR Agreement Revenue Based PRSUs Revenue Based Performance Restricted Stock Units [Member] Revenue Based Performance Restricted Stock Units [Member] Entity Address, Address Line Two Entity Address, Address Line Two Current assets: Assets, Current [Abstract] Derivative financial instruments Derivative Liability Retirement benefits Reclassification of retirement benefits from AOCI, gross of tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Entity Address, Address Line One Entity Address, Address Line One ROU assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Weighted-average fair value, vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value North America North America [Member] Income tax expense Income tax effects on above Income Tax Expense (Benefit) Fair value hedge Fair Value Hedging [Member] Equity Funds Equity Funds [Member] Principles of Consolidation Consolidation, Policy [Policy Text Block] Additional cash incentives and earnouts Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount Numerator: Net Income (Loss) Attributable to Parent [Abstract] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Unamortized debt issuance expense Unamortized Debt Issuance Expense Statement [Table] Statement [Table] Term deposits Term Deposits, Non-Current Term Deposits, Non-Current Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Impairment loss in relation to costs capitalized Capitalized Contract Cost, Impairment Loss Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Derivative asset Derivative Asset, Subject to Master Netting Arrangement, before Offset Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Unrealized foreign currency exchange (gain)/loss, net Unrealized Gain (Loss), Foreign Currency Transaction, before Tax Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]