Short-Term Borrowing Short-Term Borrowing - Schedule of Short-Term Debt (Details)	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Short-term Debt [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity	$ 250,000,000.0
Short-term borrowing	$ 196,500,000	$ 179,900,000
Number Of Unsecured Bank Credit Facilities	3
Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 450,000,000.0