Business Combinations, Consideration Transferred (Details) - Aug. 30, 2025 |
USD ($)
shares
AUD ($)
|
$ / shares |
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| Acquisition-date fair value of total consideration transferred [abstract] | ||||||||||
| Total consideration transferred | $ 201,791,000 | |||||||||
| Total Value of Equity Instruments Issued [Abstract] | ||||||||||
| Foreign exchange rate | 1 | |||||||||
| Piedmont Lithium Inc and Sayona Mining Limited [Member] | ||||||||||
| Acquisition-date fair value of total consideration transferred [abstract] | ||||||||||
| Equity instruments issued | [1] | $ 196,624,000 | ||||||||
| Replacement share awards | [2] | 5,167,000 | ||||||||
| Total consideration transferred | [3] | 201,791,000 | ||||||||
| Fair value adjustment for replacement share awards | 3,700,000 | |||||||||
| Fair value of replacement share awards at acquisition date | $ 1,500,000 | |||||||||
| Piedmont Lithium Inc [Member] | ||||||||||
| Total Value of Equity Instruments Issued [Abstract] | ||||||||||
| Number of common stock of acquiree on issue on date of acquisition | shares | 21,946,069 | |||||||||
| Exchange ratio (per share of Piedmont common stock | 527 | |||||||||
| Sayona Mining Limited [Member] | ||||||||||
| Total Value of Equity Instruments Issued [Abstract] | ||||||||||
| Number of Piedmont common stock on issue on date of acquisition (in shares) | shares | [4] | 11,565,602,304 | ||||||||
| Closing price of Sayona ordinary shares traded on the ASX on date of acquisition (in dollars per share) | $ / shares | $ 0.026 | |||||||||
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