Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Trade allowance	$ 3.4	$ 6.8
Allowance for lease receivables	$ 0.6	$ 0.5
Class A Common Shares
Common stock, par value (usd per share)	$ 0	$ 0
Common stock, shares authorized (shares)	250,000,000	250,000,000
Common stock, shares issued (shares)	83,029,500	83,029,500
Common stock, shares outstanding (shares)	83,029,500	83,029,500
Class B Common Stock
Common stock, par value (usd per share)	$ 0	$ 0
Common stock, shares authorized (shares)	750,000,000	750,000,000
Common stock, shares issued (shares)	94,837,673	94,593,588
Common stock, shares outstanding (shares)	94,088,025	93,969,268