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Debt and Other Obligations - Other Short-Term Debt and Obligations (Details) € in Millions, $ in Millions | Mar. 31, 2024 USD ($) | Mar. 31, 2024 EUR (€) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 EUR (€)
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Total of Other Short-term Debt and Obligations | $ 142.6 |  | $ 134.7 |
Revolving Credit Facility | Ancillary Credit Facilities |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Borrowing capacity | 253.0 | € 234.0 | 236.5 | € 214.0
Revolving Credit Facility | OEC GmbH outstanding borrowings | Ancillary Credit Facilities |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding | 119.9 |  | 88.8 |
Revolving Credit Facility | OEC LLC outstanding borrowings | Ancillary Credit Facilities |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding | 5.8 |  | 21.1 |
Line of Credit | Brazil Uncommitted Local Lines of Credit (capacity $3.2 million) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding | 0.0 |  | 0.0 |
Borrowing capacity | 3.2 |  |  |
Working Capital Loan | Korea Working Capital Loan (capacity $38.9 million) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Borrowing capacity | 38.9 |  |  |
Working Capital Loan | Korea Working Capital Loan (capacity $38.9 million) | Uncommitted |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding | 1.9 |  | 1.9 |
Working Capital Loan | Korea Working Capital Loan (capacity $38.9 million) | Committed |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding | 15.0 |  | 20.1 |
Working Capital Loan | China Working Capital Loan |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding | $ 0.0 |  | $ 2.8 |

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