Short-Term Borrowings and Credit Arrangements (Tables)

12 Months Ended

Dec. 31, 2024

Line of Credit Facility [Line Items]

Line of credit facilities availability

The availability under the facilities in place for the years ended December 31 is shown in the following table (in millions):

	2024		2023
Unsecured revolving line of credit, expiring November 2028	600.0		425.0
Unsecured revolving line of credit, expiring April 2024	—		100.0
Unsecured revolving line of credit, expiring March 2025	—		25.0
	600.0		550.0
Amounts outstanding at December 31:
SOFR borrowings	413.0		318.0
Letters of credit	—		—
	413.0		318.0
Net availability as of December 31	$	187.0	$	232.0