BENEFIT PLANS (Tables)

9 Months Ended

Sep. 30, 2022

Pension Plans, Defined Benefit [Member]

Defined Benefit Plan Disclosure [Line Items]

Components of Net Periodic Benefit Cost

PENSION BENEFITS	Three Months Ended		Nine Months Ended
	September 30		September 30
in millions	2022	2021	2022	2021
Components of Net Periodic Benefit Cost
Service cost	$          1.0	$          1.2	$          3.0	$          3.6
Interest cost	5.3	4.9	15.8	14.6
Expected return on plan assets	(7.5)	(11.4)	(22.6)	(34.1)
Amortization of prior service cost	0.4	0.3	1.1	1.0
Amortization of actuarial loss	1.1	2.2	3.2	6.5
Net periodic pension benefit cost (credit)	$          0.3	$        (2.8)	$          0.5	$        (8.4)
Pretax reclassifications from AOCI included in
net periodic pension benefit cost	$          1.5	$          2.5	$          4.3	$          7.5

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		Nine Months Ended
	September 30		September 30
in millions	2022	2021	2022	2021
Components of Net Periodic Benefit Cost
Service cost	$          0.6	$          0.3	$          1.7	$          0.8
Interest cost	0.3	0.1	0.7	0.3
Amortization of prior service credit	0.0	(0.5)	(0.2)	(1.4)
Amortization of actuarial gain	(0.3)	(0.4)	(1.0)	(1.1)
Net periodic postretirement benefit cost (credit)	$          0.6	$        (0.5)	$          1.2	$        (1.4)
Pretax reclassifications from AOCI included in
net periodic postretirement benefit credit	$        (0.3)	$        (0.9)	$        (1.2)	$        (2.5)