Initial Public Offering (Details) - $ / shares		12 Months Ended
Initial Public Offering (Details) - $ / shares	Mar. 03, 2025	Dec. 31, 2025
Initial Public Offering [Line Items]
Purchase price per share (in Dollars per share)	$ 10	$ 10
Class A Ordinary Shares [Member]
Initial Public Offering [Line Items]
Number of units issued	1
Over-Allotment Option [Member]
Initial Public Offering [Line Items]
Number of units issued	3,000,000
Ordinary share (in Dollars per share)	$ 10
Over-Allotment Option [Member] \| Public Units [Member]
Initial Public Offering [Line Items]
Number of units issued	23,000,000
Initial Public Offering [Member]
Initial Public Offering [Line Items]
Number of units issued	23,000,000
Purchase price per share (in Dollars per share)	$ 10	$ 10
Ordinary share (in Dollars per share)	$ 1
Initial Public Offering [Member] \| Public Units [Member]
Initial Public Offering [Line Items]
Number of units issued	3,000,000
Initial Public Offering [Member] \| Class A Ordinary Shares [Member]
Initial Public Offering [Line Items]
Number of units issued		600,000

Fifth Era Acquisition Corp I 10-K