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Income Taxes - Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
May 31, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Jun. 30, 2023 | Mar. 31, 2019 | Jun. 30, 2024 | Jun. 30, 2023 | Sep. 30, 2023 | Dec. 31, 2012
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Income tax (benefit) expense |  | $ (2.2) |  | $ 15.6 |  | $ (1.2) | $ 16.0 |  |
Income (loss) before income tax |  | (127.4) |  | 42.0 |  | (132.7) | 38.7 |  |
Increase (decrease) in income taxes |  |  |  | $ (17.8) |  |  | (17.2) |  |
Decrease in discrete income tax expense |  | (17.0) |  |  |  | (16.3) |  |  |
Non-cash charge for impairment of goodwill | $ 127.5 | $ 127.5 |  |  |  | $ 127.5 |  |  |
Minimum global tax |  | 15.00% |  |  |  | 15.00% |  |  |
Standard penalty cancellation percentage |  |  |  |  |  |  |  | 75.00% |
Penalties, interest and other fees penalties |  |  | $ 13.3 |  |  |  |  |  |
Foreign Tax Authority | Minimum |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Statutes of limitation, period |  |  |  |  |  | 2 years |  |  |
Foreign Tax Authority | Maximum |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Statutes of limitation, period |  |  |  |  |  | 6 years |  |  |
Foreign Tax Authority | Australian Taxation Office |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Open tax year |  |  |  |  |  | 2019 2020 2021 2022 2023 2024 |  |  |
Foreign Tax Authority | Secretariat of the Federal Revenue Bureau of Brazil |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Income tax (benefit) expense |  |  |  |  |  | $ (2.6) |  |  |
Open tax year |  |  |  |  |  | 2018 2019 2020 2021 2022 2023 2024 |  |  |
Income tax examination, interest expense |  |  |  |  |  | $ 0.4 | $ 1.0 |  |
Foreign Tax Authority | Secretariat of the Federal Revenue Bureau of Brazil | Tax Year 2008 to 2010 |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Additional reserve from a prior period |  |  |  |  | $ 5.6 |  |  |  |
Foreign Tax Authority | Secretariat of the Federal Revenue Bureau of Brazil | Tax Year 2007 to 2012 |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Unrecognized tax benefits |  |  |  |  |  |  |  |  | $ 44.5
Potential tax adjustment related to related to acquisition purchase price |  |  |  |  |  |  |  |  | $ 43.3
Foreign Tax Authority | Canada Revenue Agency |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Open tax year |  |  |  |  |  | 2020 2021 2022 2023 2024 |  |  |
Foreign Tax Authority | Federal Ministry of Finance, Germany |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Open tax year |  |  |  |  |  | 2019 2020 2021 2022 2023 2024 |  |  |
Foreign Tax Authority | Swedish Tax Agency (Skatteverket) |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Open tax year |  |  |  |  |  | 2021 2022 2023 2024 |  |  |
Foreign Tax Authority | Her Majesty's Revenue and Customs (HMRC) |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Open tax year |  |  |  |  |  | 2022 2023 2024 |  |  |
Foreign Tax Authority | Other Noncurrent Liabilities | Secretariat of the Federal Revenue Bureau of Brazil | Tax Year 2007 to 2010 |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Unrecognized tax benefits |  | $ 19.5 |  |  |  | $ 19.5 |  |  |
State and Local Jurisdiction | Minimum |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Statutes of limitation, period |  |  |  |  |  | 2 years |  |  |
State and Local Jurisdiction | Maximum |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |
Statutes of limitation, period |  |  |  |  |  | 6 years |  |  |

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