Stockholders' Equity and Earnings Per Common Share - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Stockholders Equity and Earnings Per Common Share Additional Information [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share	300,000	100,000	500,000
Treasury Stock, Retired, Cost Method, Amount			$ 3,642.5
Authorized Shares of Preferred Stock	25,000,000.0
Par Value Per Share of Preferred Stock	$ 0.10
Issued Shares of Preferred Stock	0
Common Class A
Stockholders Equity and Earnings Per Common Share Additional Information [Line Items]
Treasury Stock, Shares, Retired			115,000,000.0