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Common Equity - Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended
	Jul. 27, 2026	Jun. 30, 2026	Mar. 31, 2026	Jun. 30, 2025	Mar. 31, 2025	Jan. 31, 2026	Dec. 31, 2025
Class of Stock
Anti-dilutive share-based awards and options excluded from computation of diluted earnings per share		0.0		0.0
Stock repurchase program - amount authorized						$ 150.0
Treasury stock, value		$ 116.2					$ 111.0
Repurchase Program 2026
Class of Stock
Treasury stock, value		$ 5.2
Class A Common Shares
Class of Stock
Dividends declared per share		$ 0.1	$ 0.1	$ 0.095	$ 0.095
Class A Common Shares \| O 2026 Q3 Dividends \| Subsequent Event
Class of Stock
Dividends declared per share	$ 0.10
Class B Common Stock
Class of Stock
Dividends declared per share		$ 0.1	$ 0.1	$ 0.095	$ 0.095
Class B Common Stock \| O 2026 Q3 Dividends \| Subsequent Event
Class of Stock
Dividends declared per share	$ 0.10