Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 29, 2024	Dec. 31, 2023
Allowance for trade accounts receivable	$ 8.4	$ 8.4
Class A common stock
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	100,000,000	100,000,000.0
Common stock, shares issued (in shares)	35,200,000	35,200,000
Treasury stock, Class A shares (in shares)	3,600,000	3,200,000
Class B common stock
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	10,000,000	10,000,000.0
Common stock, shares issued (in shares)	3,300,000	3,300,000