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Stockholders’ Equity - Noncontrolling Ownership Interest (Details) - shares | Jun. 30, 2025 | Dec. 31, 2024
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Bakkt Opco Holdings, LLC |  |
Noncontrolling Interest [Line Items] |  |
Ownership percentage, Total Opco common units outstanding | 100.00% | 100.00%
Bakkt Opco Holdings, LLC |  |
Noncontrolling Interest [Line Items] |  |
Opco Common Units (in shares) | 14,151,816 | 13,689,188
Class A Common Stock | Bakkt Opco Holdings, LLC |  |
Noncontrolling Interest [Line Items] |  |
Ownership percentage, Opco common units held by Bakkt Holdings, Inc. | 49.00% | 48.00%
Class A Common Stock | Bakkt Opco Holdings, LLC |  |
Noncontrolling Interest [Line Items] |  |
Opco Common Units (in shares) | 6,974,740 | 6,510,885
Class V Common Stock | Bakkt Opco Holdings, LLC |  |
Noncontrolling Interest [Line Items] |  |
Ownership percentage, Opco common units held by noncontrolling interest holders | 51.00% | 52.00%
Class V Common Stock | Bakkt Opco Holdings, LLC |  |
Noncontrolling Interest [Line Items] |  |
Opco Common Units (in shares) | 7,177,076 | 7,178,303

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