EARNINGS PER SHARE (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Basic and Diluted Earnings Per Share Table

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Computation of Income per Share	(In millions, except per share data)
Net income	$	195.1	$	52.7	$	274.6	$	60.2
Basic shares	167.0		166.3		167.1		166.0
Basic net income per share	$	1.17	$	0.32	$	1.64	$	0.36
Diluted shares:
Basic shares	167.0		166.3		167.1		166.0
Stock-based compensation	1.6		2.2		1.8		2.2
Diluted shares	168.6		168.5		168.9		168.2
Diluted net income per share	$	1.16	$	0.31	$	1.63	$	0.36