Fair Value Measurement on a Recurring Basis - Schedule of Assets and Liabilities that are Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Assets:
Total Assets	$ 248,753,164	$ 246,617,353
Liabilities:
Total Liabilities	2,983,500	4,608,560
U.S. government debt securities [Member]
Assets:
Assets held in Trust	248,753,164	246,617,353
Forward sale securities liability [Member]
Liabilities:
Forward sale securities liability	2,983,500	4,608,560
Quoted Prices in Active Markets (Level 1) [Member]
Assets:
Total Assets	248,753,164	246,617,353
Liabilities:
Total Liabilities
Quoted Prices in Active Markets (Level 1) [Member] \| U.S. government debt securities [Member]
Assets:
Assets held in Trust	248,753,164	246,617,353
Quoted Prices in Active Markets (Level 1) [Member] \| Forward sale securities liability [Member]
Liabilities:
Forward sale securities liability
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Total Assets
Liabilities:
Total Liabilities
Significant Other Observable Inputs (Level 2) [Member] \| U.S. government debt securities [Member]
Assets:
Assets held in Trust
Significant Other Observable Inputs (Level 2) [Member] \| Forward sale securities liability [Member]
Liabilities:
Forward sale securities liability
Significant Other Unobservable Inputs (Level 3) [Member]
Assets:
Total Assets
Liabilities:
Total Liabilities	2,983,500	4,608,560
Significant Other Unobservable Inputs (Level 3) [Member] \| U.S. government debt securities [Member]
Assets:
Assets held in Trust
Significant Other Unobservable Inputs (Level 3) [Member] \| Forward sale securities liability [Member]
Liabilities:
Forward sale securities liability	$ 2,983,500	$ 4,608,560

Cantor Equity Partners II, Inc. 10-Q