Condensed Consolidated Statements of Stockholders Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total Stockholders' Equity	Noncontrolling Interest
Balance at Dec. 31, 2021	$ 5,782.8	$ 0.0	$ 2,179.2	$ 3,679.9	$ (92.4)	$ 5,766.7	$ 16.1
Balance, Shares at Dec. 31, 2021		109.7
Net income	98.1	$ 0.0	0.0	97.9	0.0	97.9	0.2
Dividends on common shares	(55.7)	0.0	0.0	(55.7)	0.0	(55.7)	0.0
Repurchases of Company shares	(108.0)	$ 0.0	(108.0)	0.0	0.0	(108.0)	0.0
Repurchases of Company shares, shares		(1.6)
Shares issued in connection with share-based compensation	(12.5)	$ 0.0	(11.6)	(0.9)	0.0	(12.5)	0.0
Shares issued in connection with share-based compensation, shares		0.6
Share-based compensation	43.3	$ 0.0	43.3	0.0	0.0	43.3	0.0
Net activity related to noncontrolling interests	(0.6)	0.0	0.0	0.0	0.0	0.0	(0.6)
Other comprehensive income loss	(368.2)	0.0	0.0	0.0	(368.2)	(368.2)	0.0
Balance at Mar. 31, 2022	5,379.2	$ 0.0	2,102.9	3,721.2	(460.6)	5,363.5	15.7
Balance, Shares at Mar. 31, 2022		108.7
Balance at Dec. 31, 2022	$ 4,688.2	$ 0.0	1,812.4	3,721.3	(868.9)	4,664.8	23.4
Balance, Shares at Dec. 31, 2022	103.2	103.2
Net income	$ 46.0	$ 0.0	0.0	45.9	0.0	45.9	0.1
Dividends on common shares	(53.8)	0.0	0.0	(53.8)	0.0	(53.8)	0.0
Repurchases of Company shares	(30.4)	$ 0.0	(30.4)	0.0	0.0	(30.4)	0.0
Repurchases of Company shares, shares		(0.6)
Shares issued in connection with share-based compensation	(6.0)	$ 0.0	(4.9)	(1.1)	0.0	(6.0)	0.0
Shares issued in connection with share-based compensation, shares		0.7
Share-based compensation	23.0	$ 0.0	23.0	0.0	0.0	23.0	0.0
Net activity related to noncontrolling interests	(1.1)	0.0	0.0	0.0	0.0	0.0	(1.1)
Other comprehensive income loss	113.0	0.0	0.0	0.0	113.0	113.0	0.0
Balance at Mar. 31, 2023	$ 4,778.9	$ 0.0	$ 1,800.1	$ 3,712.3	$ (755.9)	$ 4,756.5	$ 22.4
Balance, Shares at Mar. 31, 2023	103.3	103.3