CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
OPERATING ACTIVITIES
Net income	$ 16.4	$ 11.8
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8.6	8.8
Stock-based compensation	1.5	1.9
Deferred income tax provision	1.1	0.5
Provision for uncollectible accounts receivable	1.0	0.0
Non-cash effects of changes in liabilities for uncertain income tax positions	0.0	(0.4)
Increase in working capital	(13.7)	(20.9)
Pension and other postretirement benefits	(0.4)	1.5
Other	(0.3)	(0.2)
NET CASH PROVIDED BY OPERATING ACTIVITIES	14.2	3.0
INVESTING ACTIVITIES
Capital expenditures	(4.8)	(4.3)
Purchase of marketable securities	0.0	(0.2)
Other	(0.1)	(0.2)
NET CASH USED IN INVESTING ACTIVITIES	(4.9)	(4.7)
FINANCING ACTIVITIES
Long-term borrowings (Note 4)	88.7	62.9
Repayments of long-term debt (Note 4)	(17.0)	(55.5)
Debt issuance costs	(0.5)	(0.2)
Cash dividends paid	(8.0)	(7.6)
Shares purchased (Note 7)	(3.8)	(0.3)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	59.4	(0.7)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	(0.2)	0.1
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	68.5	(2.3)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	9.0	9.9
CASH AND CASH EQUIVALENTS, END OF PERIOD	77.5	7.6
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during period for interest, net of interest costs capitalized	0.2	0.6
Cash paid during period for income taxes	2.0	4.3
Non-cash investing activities:
Liability for equipment acquired	$ 2.4	$ 2.6