Consolidated Statements Of Changes In Shareholders’ Equity - USD ($) $ in Millions	Common Stock Including Additional Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interests [Member]	Total
Balance at Dec. 31, 2021	$ 456.7	$ 850.3	$ (180.5)	$ 5.4	$ 1,131.9
Net income		452.9		0.8	453.7
Other comprehensive income (loss)			27.7	(0.2)	27.5
Stock issued	20.4				20.4
Stock issued
Stock purchased	(14.7)			(0.4)	(15.1)
Dividends declared	69.4	(162.2)			(92.8)
Balance at Dec. 31, 2022	531.8	1,141.0	(152.8)	5.6	1,525.6
Net income		463.4		1.0	464.4
Other comprehensive income (loss)			(25.1)		(25.1)
Stock issued	22.9			1.5	24.4
Stock purchased	(20.3)			(0.3)	(20.6)
Dividends declared	106.9	(187.3)			(80.4)
Balance at Dec. 31, 2023	641.3	1,417.1	(177.9)	7.8	1,888.3
Net income		423.1		1.0	424.1
Other comprehensive income (loss)			(39.8)	(0.5)	(40.3)
Stock issued	26.1				26.1
Stock issued
Stock purchased	(24.7)			(0.6)	(25.3)
Dividends declared		(225.3)			(225.3)
Balance at Dec. 31, 2024	$ 642.7	$ 1,614.9	$ (217.7)	$ 7.7	$ 2,047.6