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Debt and Credit Arrangements (Tables)

12 Months Ended

Dec. 31, 2025

Debt Disclosure [Abstract]

Schedule of Debt

Debt consists of the following:

DECEMBER 31		2025				2024
(in millions)
Short-term:
Senior debentures maturing April 15, 2026		$	375.0			$	—
Senior debentures maturing October 15, 2025			—				61.8
Total short-term debt			375.0				61.8
Long-term:
Senior debentures maturing September 1, 2035			500.0				—
Senior debentures maturing April 15, 2026			—				375.0
Senior debentures maturing September 1, 2030			300.0				300.0
Subordinated debentures maturing February 3, 2027			50.1				50.1
Long-term debt principal			850.1				725.1
Unamortized debt issuance costs			(6.8	)			(2.8	)
Total long-term debt			843.3				722.3
Total debt		$	1,218.3			$	784.1

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- Definition

Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation.

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