EARNINGS PER-SHARE (Tables)

12 Months Ended

Dec. 31, 2017

EARNINGS PER-SHARE

Schedule of basic and diluted earnings per share

	Year Ended December 31, 2017					Year Ended December 31, 2016					Year Ended December 31, 2015
			Weighted	Per				Weighted	Per				Weighted	Per
			Average	Common				Average	Common				Average	Common
	Net		Common	Share		Net		Common	Share		Net		Common	Share
(In millions, except per-share amounts)	Income		Shares	Amount		Income		Shares	Amount		Income		Shares	Amount
Basic:	$	232.0	42.9	$	5.41	$	81.4	43.1	$	1.89	$	103.0	43.5	$	2.37
Effect of Dilutive Securities:			0.3		(0.04)			0.4		(0.02)			0.5		(0.03)
Diluted:	$	232.0	43.2	$	5.37	$	81.4	43.5	$	1.87	$	103.0	44.0	$	2.34