Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Basic and diluted net loss per share

Basic and diluted net loss per share attributable to common stockholders was calculated as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Numerator:
Net loss attributable to common stockholders ($ in millions)	$	(55.6)	$	(21.0)	$	(104.6)	$	(57.5)
Denominator:
Weighted average common shares outstanding — basic and diluted	61,444,958		11,891,979		60,643,764		11,750,198
Net loss per share attributable to common stockholders — basic and diluted	$	(0.90)	$	(1.77)	$	(1.72)	$	(4.89)