Consolidated Statements Of Changes in Shareholders’ Equity - USD ($) $ in Millions	Common Stock Including Additional Paid In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests	Total
Balance at Dec. 31, 2019	$ 449.5	$ 694.0	$ (250.6)	$ 4.9	$ 897.8
Net income		121.8		0.3	122.1
Other comprehensive income (loss)			3.9	0.2	4.1
Stock issued	19.1				19.1
Stock purchased	(16.5)			(0.9)	(17.4)
Dividends declared		(90.7)			(90.7)
Balance at Dec. 31, 2020	452.1	725.1	(246.7)	4.5	935.0
Net income		262.4		0.6	263.0
Other comprehensive income (loss)			66.2		66.2
Stock issued	20.5				21.6
Stock issued				1.1
Stock purchased	(15.9)			(0.8)	(16.7)
Dividends declared		(137.2)			(137.2)
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 purchased	(14.7)			(0.4)	(15.1)
Dividends declared		(162.2)			(92.8)
Dividends declared	69.4
Balance at Dec. 31, 2022	$ 531.8	$ 1,141.0	$ (152.8)	$ 5.6	$ 1,525.6