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Short-Term and Long-Term Debt (Tables)
3 Months Ended
Mar. 31, 2023
Debt Disclosure [Abstract]  
Schedule of Short-Term and Long-Term Debt [Table Text Block]
The following tables present the Company’s short-term and long-term debt as of March 31, 2023, and December 31, 2022:
March 31, 2023PrincipalUnamortized Debt Issuance CostsTotal
Millions  
Short-Term Debt$176.5 $(0.1)$176.4 
Long-Term Debt1,763.4 (7.9)1,755.5 
Total Debt$1,939.9 $(8.0)$1,931.9 
December 31, 2022PrincipalUnamortized Debt Issuance CostsTotal
Millions  
Short-Term Debt $272.7 $(0.1)$272.6 
Long-Term Debt1,656.4 (8.2)1,648.2 
Total Debt$1,929.1 $(8.3)$1,920.8