FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2022

FAIR VALUE MEASUREMENTS [Abstract]

Fair Value Measurement on Recurring Basis

	Level 1 Fair Value
	June 30	December 31	June 30
in millions	2022	2021	2021
Fair Value Recurring
Rabbi Trust
Mutual funds	$          26.0	$          34.7	$          31.2
Total	$          26.0	$          34.7	$          31.2

	Level 2 Fair Value
	June 30	December 31	June 30
in millions	2022	2021	2021
Fair Value Recurring
Rabbi Trust
Money market mutual fund	$            1.1	$            0.6	$            1.2
Total	$            1.1	$            0.6	$            1.2