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Commitments and Contingencies - Bonds, Leases, and Sales and Purchase Commitments (Details) bbl in Millions, $ in Millions | Dec. 31, 2021 USD ($) bbl | Dec. 31, 2020 USD ($)
--- | --- | ---
Long-term Purchase Commitment [Line Items] |  |
Outstanding bonds | $ 54.9 | $ 50.6
Sales commitments under derivative programs | 518.0 |
Purchase commitments under derivative programs | $ 93.0 |
Aviation Fuel | Minimum |  |
Long-term Purchase Commitment [Line Items] |  |
Purchase commitments under derivative programs, volume | bbl | 1.9 |
Aviation Fuel | Maximum |  |
Long-term Purchase Commitment [Line Items] |  |
Purchase commitments under derivative programs, volume | bbl | 2.0 |

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- Definition Derivative Program, Purchase Commitments, Amount + References No definition available. + Details
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Namespace Prefix: | int_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Derivative Program, Purchase Commitments, Volume + References No definition available. + Details
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- Definition Derivative Program, Sale Commitments, Amount + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Represents the surety bonds, arranged to satisfy various security requirements, outstanding as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | int_
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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Period Type: |

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- Details
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- Details
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