ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)

6 Months Ended

Jun. 30, 2020

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS).

Schedule of changes in accumulated other comprehensive income (loss) by component, net of tax

									Accumulated
					Non-				Other
			Post-		Qualified				Comprehensive
(In millions)	Pensions		Retirement		Plans		Other		Income (Loss)
Balance at December 31, 2019	$	(51.9)	$	16.3	$	(0.4)	$	(0.9)	$	(36.9)
Amortization of prior service cost		(0.5)		(0.6)		(0.1)		—		(1.2)
Amortization of net loss		1.1		0.1		0.1		—		1.3
Foreign currency exchange		—		—		—		(0.5)		(0.5)
Other adjustments		—		—		—		(0.2)		(0.2)
Balance at March 31, 2020		(51.3)		15.8		(0.4)		(1.6)		(37.5)
Amortization of prior service cost		(0.4)		(0.7)		—		—		(1.1)
Amortization of net loss		1.1		0.1		0.1		—		1.3
Foreign currency exchange		—		—		—		0.3		0.3
Other adjustments		—		—		—		(0.4)		(0.4)
Balance at June 30, 2020	$	(50.6)	$	15.2	$	(0.3)	$	(1.7)	$	(37.4)

									Accumulated
					Non-				Other
			Post-		Qualified				Comprehensive
(In millions)	Pensions		Retirement		Plans		Other		Income (Loss)
Balance at December 31, 2018	$	(55.8)	$	21.7	$	(0.1)	$	(0.3)	$	(34.5)
Amortization of prior service cost		(0.4)		(0.7)		—		—		(1.1)
Amortization of net loss		0.7		0.2		—		—		0.9
Balance at March 31, 2019		(55.5)		21.2		(0.1)		(0.3)		(34.7)
Amortization of prior service cost		(0.5)		(0.7)		(0.1)		0.1		(1.2)
Amortization of net loss		0.7		0.1		0.1		—		0.9
Other adjustments		—		—		—		(0.2)		(0.2)
Balance at June 30, 2019	$	(55.3)	$	20.6	$	(0.1)	$	(0.4)	$	(35.2)