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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets and Goodwill [Table Text Block]
Changes in the carrying amounts of goodwill and intangible assets were as follows:
GoodwillIntangibles - Customer RelationshipTotal
Balance as of December 31, 2022
$35.1 $8.6 $43.6 
  Amortization— (2.1)(2.1)
Balance as of December 31, 2023
35.1 6.4 41.5 
Recognized goodwill 1
13.6 — 13.6 
  Amortization— (2.1)(2.1)
Balance as of December 31, 2024
$48.6 $4.3 $52.9 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
As of December 31, 2024, estimated future amortization expense related to intangible assets is as follows:
Amount
2025$2.1 
20262.1 
2027— 
2028— 
2029— 
Total$4.3