Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2021

Basic and diluted loss per share was calculated as follows:


	Year ended December 31,
(dollars and shares in millions, except per common share amounts)	2021		2020		2019
Net loss	$	(191.0)	$	(119.3)	$	(70.3)


Weighted average common shares outstanding - basic and diluted	50.0		39.5		32.9
Net loss per common share - basic and diluted	$	(3.82)	$	(3.02)	$	(2.13)

Securities excluded from the computation of diluted net loss per share

For the years ended December 31 2021, 2020, and 2019, the following securities have been excluded from the computation of diluted net loss per share as their effect would have been anti-dilutive:


	Year ended December 31,
(shares in millions)	2021	2020	2019
Stock options	2.4	1.5	0.3
Restricted stock awards	0.1	0.4	0.9
Restricted stock units	0.1	0.1	0.0
	2.6	2.0	1.2