(LOSS) EARNINGS PER COMMON SHARE (Tables)

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Computation of Basic and Diluted Loss Per Share

The following table sets forth the computation of basic and diluted loss per share:

In millions, except per share data
	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Numerator:
Net loss attributable to Stericycle, Inc. common shareholders	$	(81.2)	$	(59.2)	$	(105.8)	$	(127.5)
Numerator for basic loss per share attributable to Stericycle, Inc. common shareholders	$	(81.2)	$	(59.2)	$	(105.8)	$	(127.5)
Denominator:
Denominator for basic loss per share - weighted average shares	91.5		91.1		91.4		91.0
Effect of dilutive securities:
Denominator for diluted (loss) earnings per share - adjusted weighted average shares after assumed exercises	91.5		91.1		91.4		91.0
Loss per share – Basic	$	(0.89)	$	(0.65)	$	(1.16)	$	(1.40)
Loss per share – Diluted	$	(0.89)	$	(0.65)	$	(1.16)	$	(1.40)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

In periods of net loss, options, RSUs, and PSUs are anti-dilutive and therefore excluded from the earnings per share calculation.

In thousands
	Three Months Ended September 30,		Nine Months Ended September 30,
	2020	2019	2020	2019
Options excluded from computation of diluted loss per share.	2,691	4,469	3,190	4,663
RSUs excluded from computation of diluted loss per share.	278	335	281	239