Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Trade allowance	$ (6.1)	$ (5.2)
Allowance for lease receivables	$ (2.1)	$ (1.7)
Class A Common Shares
Common stock, par value (usd per share)	$ 0
Common stock, shares authorized (shares)	250,000,000
Common stock, shares issued (shares)	83,029,500
Common stock, shares outstanding (shares)	83,029,500
Class B Common Stock
Common stock, par value (usd per share)	$ 0
Common stock, shares authorized (shares)	750,000,000
Common stock, shares issued (shares)	94,596,670
Common stock, shares outstanding (shares)	93,951,067