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Contingencies - Narrative (Details) $ in Millions	Jun. 11, 2024 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 28, 2004 unrelated_party
Loss Contingencies [Line Items]
Number of unrelated parties | unrelated_party				12
Accrual for environmental loss contingencies		$ 4.8	$ 4.8
Other Current Liabilities
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies		1.4
Other Noncurrent Liabilities
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies		$ 3.4
Government vs Timken India Limited | Pending Litigation | Timken India Limited
Loss Contingencies [Line Items]
Loss contingency, damages sought, value	$ 12.0

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