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The amount of estimated interest recognized in the period arising from income tax examinations.

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Income Taxes - Narrative (Details) - USD ($) $ in Millions		3 Months Ended				6 Months Ended		9 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Millions	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