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PROPERTY, PLANT AND EQUIPMENT, NET - Depreciation (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Depreciation expense for property, plant and equipment: |  |
Depreciation expense | $ 18,304 | $ 17,973

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- Definition Depreciation And Amortization Continuing Operations + References No definition available. + Details
Name: | fip_DepreciationAndAmortizationContinuingOperations
Namespace Prefix: | fip_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_DepreciationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration