EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Basic and Diluted Earnings Per Share Table

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Computation of Net Income (Loss) per Share	(In millions, except per share data)
Net income (loss)	$	355.8	$	(120.1)	$	599.4	$	(200.1)
Basic shares	159.9		157.9		159.2		157.8
Basic net income (loss) per share	$	2.23	$	(0.76)	$	3.77	$	(1.27)
Diluted shares:
Basic shares	159.9		157.9		159.2		157.8
Stock-based compensation	3.9		—		3.1		—
Diluted shares	163.8		157.9		162.3		157.8
Diluted net income (loss) per share	$	2.17	$	(0.76)	$	3.69	$	(1.27)