QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2022

Quarterly Financial Data [Abstract]

Schedule of Quarterly Financial Information

Quarterly financial data (unaudited) were as follows (dollars in millions, except per share data):

2022	1st Qtr.		2nd Qtr.		3rd Qtr.		4th Qtr.
Revenues	$	842.9	$	855.0	$	905.3	$	973.6
Income before income taxes	$	149.3	$	175.4	$	137.2	$	55.4
Income tax expense	37.0		39.3		32.2		12.0
Net income	$	112.3	$	136.1	$	105.0	$	43.4
Earnings per common share:
Basic:
Net income	$	.95	$	1.18	$	.92	$	.38
Diluted:
Net income	$	.93	$	1.16	$	.91	$	.37
2021	1st Qtr.		2nd Qtr.		3rd Qtr.		4th Qtr.
Revenues	$	1,006.0	$	1,073.1	$	968.3	$	1,074.8
Income before income taxes	$	190.0	$	101.6	$	128.0	$	148.1
Income tax expense	42.6		23.6		28.2		32.3
Net income	$	147.4	$	78.0	$	99.8	$	115.8
Earnings per common share:
Basic:
Net income	$	1.10	$	.59	$	.79	$	.95
Diluted:
Net income	$	1.08	$	.58	$	.77	$	.93