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Fair Value Measurements - Recurring Basis - Investment in ECOTEC - Changes in FV (Details) - ECOTEC - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Reconciliation of changes in fair value        
Purchases of equity interests $ 0.0 $ 0.0 $ 0.0 $ 0.0
Unrealized changes in the fair value $ 0.0 $ 0.0 $ 0.0 $ 0.0