Year Ended

(In millions)

December 31, 2019

December 31, 2018

December 31, 2017

Numerator:

Net earnings (loss) for basic earnings (loss) per share

$

(149.1)

$

110.1

$

(487.2)

Calculation of net earnings for diluted earnings (loss) per share:

Marked-to-market (gain) on derivative liability

—

(66.4)

—

Interest expense for Convertible Notes due 2024

—

9.7

—

Net earnings (loss) available for diluted earnings

$

(149.1)

$

53.4

$

(487.2)

Denominator (shares in thousands):

Weighted average shares for basic earnings per common share

103,832

120,621

128,246

Common equivalent shares for RSUs and PSUs

—

29

—

Common equivalent shares if converted: convertible notes 2024

—

9,455

—

Weighted average shares for diluted earnings per common share

103,832

130,105

128,246

Basic earnings (loss) per common share:

$

(1.44)

$

0.91

$

(3.80)

Diluted earnings (loss) per common share:

$

(1.44)

$

0.41

$

(3.80)