OTHER COMPREHENSIVE INCOME (Tables)

6 Months Ended

Jun. 30, 2023

OTHER COMPREHENSIVE INCOME [Abstract]

Accumulated Other Comprehensive Income, Net of Tax

	June 30	December 31	June 30
in millions	2023	2022	2022
AOCI
Cash flow hedges	$         (20.2)	$         (21.0)	$         (21.8)
Pension and postretirement plans	(131.2)	(133.7)	(128.7)
Total	$       (151.4)	$       (154.7)	$       (150.5)

Changes in Accumulated Other Comprehensive Income, Net of Tax

		Pension and
	Cash Flow	Postretirement
in millions	Hedges	Benefit Plans	Total
AOCI
Balances as of December 31, 2022	$         (21.0)	$       (133.7)	$       (154.7)
Amounts reclassified from AOCI	0.8	2.5	3.3
Net current period OCI changes	0.8	2.5	3.3
Balances as of June 30, 2023	$         (20.2)	$       (131.2)	$       (151.4)

Amounts Reclassified from Accumulated Other Comprehensive Income to Earnings

	Three Months Ended		Six Months Ended
	June 30		June 30
in millions	2023	2022	2023	2022
Amortization of Cash Flow Hedge Losses
Interest expense	$            0.5	$            0.5	$            1.1	$             1.0
Benefit from income taxes	(0.1)	(0.1)	(0.3)	(0.3)
Total	$            0.4	$            0.4	$            0.8	$             0.7
Amortization of Pension and Postretirement
Plan Actuarial Loss and Prior Service Cost
Other nonoperating expense	$            1.8	$            1.0	$            3.4	$             2.0
Benefit from income taxes	(0.5)	(0.3)	(0.9)	(0.5)
Total	$            1.3	$            0.7	$            2.5	$             1.5
Total reclassifications from AOCI to earnings	$            1.7	$            1.1	$            3.3	$             2.2