Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows from Operating Activities
Net income	$ 33.1	$ 28.7
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12.0	11.6
Deferred tax expense	0.7	0.2
Cash contributions to defined benefit pension plans	(0.0)	(0.3)
Non-cash movements on defined benefit pension plans	(1.2)	(1.6)
Stock option compensation	1.2	1.6
Changes in assets and liabilities, net of effects of acquired and divested companies:
Trade and other accounts receivable	(7.9)	(18.5)
Inventories	(5.0)	(1.8)
Prepaid expenses	2.1	(0.1)
Accounts payable and accrued liabilities	(36.0)	(10.9)
Accrued income taxes	1.6	4.4
Plant closure provisions	0.1	0.4
Unrecognized tax benefits	(0.0)	0.3
Other assets and liabilities	1.7	(0.8)
Net cash provided by operating activities	2.4	13.2
Cash Flows from Investing Activities
Capital expenditures	(7.8)	(10.7)
Internally developed software	(0.0)	(0.5)
Net cash used in investing activities	(7.8)	(11.2)
Cash Flows from Financing Activities
Non-controlling interest	0.1	0.0
Repayments of finance leases	(0.3)	(0.6)
Issue of treasury stock	0.7	1.0
Repurchase of common stock	(2.1)	(1.9)
Net cash used in financing activities	(1.6)	(1.5)
Effect of foreign currency exchange rate changes on cash	(0.6)	(0.1)
Net change in cash and cash equivalents	(7.6)	0.4
Cash and cash equivalents at beginning of period	75.7	123.1
Cash and cash equivalents at end of period	$ 68.1	$ 123.5