CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating activities:
Net income attributable to common shareholders	$ 181.0	$ 133.3	$ 335.6
Noncontrolling interest in subsidiaries' earnings (loss)	0.1	0.3	(0.1)
Net income before allocation to noncontrolling interests	181.1	133.6	335.5
Asbestos provision, net	0.0	229.0	0.0
Environmental provision, net	0.0	18.9	0.0
Loss on deconsolidation of joint venture	0.0	1.2	1.7
Realized gain on marketable securities	0.0	(1.1)	0.0
Depreciation and amortization	127.5	113.5	120.0
Stock-based compensation expense	22.3	22.3	21.6
Defined benefit plans and postretirement credit	(7.1)	(0.7)	(15.0)
Deferred income taxes	18.1	(25.1)	47.7
Cash provided by (used for) operating working capital	39.1	(40.0)	16.3
Defined benefit plans and postretirement contributions	(28.4)	(8.7)	(59.8)
Environmental payments, net of reimbursements	(4.2)	(8.2)	(6.3)
Asbestos related payments, net of insurance recoveries	(31.1)	(41.5)	(63.9)
Other	(7.8)	0.7	16.0
Total provided by operating activities	309.5	393.9	413.8
Investing activities:
Payments for acquisitions, net of cash acquired	(169.5)	(156.2)	(648.0)
Proceeds from disposition of capital assets	4.5	3.1	1.9
Capital expenditures	(34.1)	(68.8)	(108.8)
Impact of deconsolidation of joint venture	0.0	(0.2)	2.6
Purchase of marketable securities	(90.0)	(8.8)	0.0
Proceeds from sale of marketable securities	60.0	9.9	0.0
Total used for investing activities	(229.1)	(221.0)	(752.3)
Financing activities:
Dividends paid	(100.4)	(93.2)	(83.5)
Reacquisition of shares on open market	(70.0)	(79.9)	(50.1)
Stock options exercised, net of shares reacquired	5.1	2.9	16.1
Debt issuance costs	(1.3)	0.0	(5.4)
Repayment of long-term debt	0.0	(99.4)	(452.2)
Repayment of short-term debt	0.0	(7.4)	(100.0)
Proceeds from issuance of long-term debt	0.0	3.0	567.2
Proceeds from issuance of short-term debt	0.0	0.0	100.0
Proceeds from issuance of commercial paper with maturities greater than 90 days	251.3	25.0	0.0
Repayments of commercial paper with maturities greater than 90 days	(296.7)	0.0	0.0
Net (repayments) proceeds from issuance of commercial paper with maturities of 90 days or less	(76.8)	124.4	0.0
Proceeds from revolving credit facility	77.2	0.0	0.0
Repayments of revolving credit facility	(77.2)	0.0	0.0
Proceeds from term loan	343.9	0.0	0.0
Total provided by (used for) financing activities	55.1	(124.6)	(7.9)
Effect of exchange rates on cash and cash equivalents	21.6	2.2	(16.4)
Increase (decrease) in cash and cash equivalents	157.1	50.5	(362.8)
Cash and cash equivalents at beginning of period	393.9	343.4	706.2
Cash and cash equivalents at end of period	551.0	393.9	343.4
Detail of cash provided by (used for) operating working capital:
Accounts receivable	138.5	3.8	4.8
Inventories	35.4	(8.3)	(38.8)
Other current assets	(5.8)	(1.3)	(11.4)
Accounts payable	(102.6)	(23.4)	37.0
Accrued liabilities	4.8	(35.2)	40.9
U.S. and foreign taxes on income	(31.2)	24.4	(16.2)
Cash provided by (used for) operating working capital	39.1	(40.0)	16.3
Supplemental disclosure of cash flow information:
Interest paid	53.8	47.4	47.5
Income taxes paid	$ 46.5	$ 37.9	$ 58.4