Commitments and Contingencies (Details) - USD ($)		1 Months Ended	9 Months Ended
Commitments and Contingencies (Details) - USD ($)	Jan. 15, 2026	Sep. 30, 2025	Sep. 30, 2025
Commitments and Contingencies [Line Items]
Working capital loans		$ 1,500,000
Deferred underwriting discount of per unit		$ 0.55	$ 0.01
Underlying private placement units issued upon conversion of working capital loans		25,000
Number of share issued upon conversion		7,187,500
Expense reimbursement			$ 25,000
Deferred fee per unit			$ 0.55
Deferred Underwriting Commissions Payable		$ 15,812,500
Warrant [Member]
Commitments and Contingencies [Line Items]
Sale of an aggregate shares		33,333
Underlying private placement units issued upon conversion of working capital loans		150,000
Class A Ordinary Shares [Member]
Commitments and Contingencies [Line Items]
Obligated register		7,595,833
Underwriters’ Agreement [Member]
Commitments and Contingencies [Line Items]
Underwriting agreement, option period		45 days
Forecast [Member] \| Warrant [Member]
Commitments and Contingencies [Line Items]
Sale of an aggregate shares	33,333
Over-Allotment [Member] \| Underwriters’ Agreement [Member]
Commitments and Contingencies [Line Items]
Aggregate units purchased		3,750,000
Over-Allotment [Member] \| Forecast [Member]
Commitments and Contingencies [Line Items]
Aggregate units purchased	3,750,000
Price of per unit	$ 10
Initial Public Offering [Member]
Commitments and Contingencies [Line Items]
Price of per unit			$ 0.01
Deferred Underwriting Commissions Payable			$ 250,000
Private Placement Units [Member] \| Class A Ordinary Shares [Member]
Commitments and Contingencies [Line Items]
Sale of an aggregate shares		200,000
Private Placement Units [Member] \| Forecast [Member]
Commitments and Contingencies [Line Items]
Sale of an aggregate shares	200,000

OneIM Acquisition Corp. 10-Q