OTHER COMPREHENSIVE INCOME (Tables)

3 Months Ended

Mar. 31, 2023

OTHER COMPREHENSIVE INCOME [Abstract]

Accumulated Other Comprehensive Income, Net of Tax

	March 31	December 31	March 31
in millions	2023	2022	2022
AOCI
Cash flow hedges	$         (20.6)	$         (21.0)	$         (22.1)
Pension and postretirement plans	(132.5)	(133.7)	(129.5)
Total	$       (153.1)	$       (154.7)	$       (151.6)

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	0.4	1.2	1.6
Net current period OCI changes	0.4	1.2	1.6
Balances as of March 31, 2023	$         (20.6)	$       (132.5)	$       (153.1)

Amounts Reclassified from Accumulated Other Comprehensive Income to Earnings

	Three Months Ended
	March 31
in millions	2023	2022
Amortization of Cash Flow Hedge Losses
Interest expense	$            0.5	$            0.5
Benefit from income taxes	(0.1)	(0.1)
Total	$            0.4	$            0.4
Amortization of Pension and Postretirement
Plan Actuarial Loss and Prior Service Cost
Other nonoperating expense	$            1.7	$            1.0
Benefit from income taxes	(0.4)	(0.3)
Total	$            1.3	$            0.7
Total reclassifications from AOCI to earnings	$            1.7	$            1.1