Common Shareholders’ Equity and Noncontrolling Interests - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Sep. 26, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Common Shares Repurchased and Retired
Additional authorized repurchase of common shares (in shares)		301,014
Common shares repurchased and retired (in shares)	327,795	5,269	24,165	461,256
Value of common shares repurchased and retired	$ 460.8	$ 7.9	$ 32.7	$ 615.8
Value of each common share repurchased and retired (in usd per share)	$ 1,400	$ 1,505.01	$ 1,354.88	$ 1,335.11
Shares repurchased to satisfy employee income tax withholding			4,629	4,011
Common Shares Issued
Stock issued (in shares)		13,100	12,461	15,640
Dividends on Common Shares
Cash dividends declared and paid		$ 2.5	$ 2.6	$ 3.0
Dividends declared and paid (in usd per share)		$ 1.00	$ 1.00	$ 1.00
General Board Authorization
Common Shares Repurchased and Retired
Common shares repurchased and retired (in shares)			19,536	129,450
Value of common shares repurchased and retired			$ 26.2	$ 150.9
Value of each common share repurchased and retired (in usd per share)			$ 1,340.79	$ 1,165.84
Key Personnel
Common Shares Issued
Stock issued (in shares)		11,405	10,895	13,225
Directors
Common Shares Issued
Stock issued (in shares)		1,695	1,566	2,415