BENEFIT PLANS (Tables)

3 Months Ended

Mar. 31, 2022

Pension Plans, Defined Benefit [Member]

Defined Benefit Plan Disclosure [Line Items]

Components of Net Periodic Benefit Cost

PENSION BENEFITS	Three Months Ended
	March 31
in millions	2022	2021
Components of Net Periodic Benefit Cost
Service cost	$          1.0	$          1.2
Interest cost	5.3	4.9
Expected return on plan assets	(7.5)	(11.4)
Amortization of prior service cost	0.4	0.3
Amortization of actuarial loss	1.1	2.2
Net periodic pension benefit cost (credit)	$          0.3	$        (2.8)
Pretax reclassifications from AOCI included in
net periodic pension benefit cost	$          1.5	$          2.5

Other Postretirement Benefit Plans, Defined Benefit [Member]

Defined Benefit Plan Disclosure [Line Items]

Components of Net Periodic Benefit Cost

OTHER POSTRETIREMENT BENEFITS	Three Months Ended
	March 31
in millions	2022	2021
Components of Net Periodic Benefit Cost
Service cost	$          0.6	$          0.3
Interest cost	0.2	0.1
Amortization of prior service credit	(0.1)	(0.5)
Amortization of actuarial gain	(0.3)	(0.4)
Net periodic postretirement benefit cost (credit)	$          0.4	$        (0.5)
Pretax reclassifications from AOCI included in
net periodic postretirement benefit credit	$        (0.4)	$        (0.9)