Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net earnings (loss)	$ (121.9)	$ 166.8
Adjustments to reconcile net (loss) earnings to net cash provided by operating activities:
Depreciation and amortization	61.6	52.4
Loss on disposal of discontinued operations	4.4	31.9
Write-off debt refinancing fees		2.7
Gain related to sale of fixed and intangible assets	(21.0)
Deferred income taxes	(87.0)	37.9
Share-based compensation	4.7	7.1
Equity earnings from joint venture	(48.2)	(83.0)
U.S. pension cost (credit)	369.7	(5.7)
Other non-cash adjustments, net	0.7	2.3
Changes in operating assets and liabilities:
Receivables	0.2	(4.4)
Inventories	(7.8)	(8.4)
Accounts payable and accrued expenses	(20.7)	(27.0)
Income taxes receivable and payable, net	28.4	(33.1)
Other assets and liabilities	(14.7)	(18.1)
Net cash provided by operating activities	148.4	121.4
Cash flows from investing activities:
Purchases of property, plant and equipment	(33.0)	(44.0)
Return of investment from joint venture	61.4	64.4
Cash paid for acquisitions	(74.2)	(43.4)
Proceeds from the sale of assets	19.1
Payments of proceeds from Knauf to investment in joint venture	(25.9)
Payments to Knauf upon disposal of discontinued operations	(6.4)	(47.9)
Other investing activities	6.8
Net cash (used for) investing activities	(52.2)	(70.9)
Cash flows from financing activities:
Proceeds from short-term debt	30.0
Payments of short-term debt	(30.0)
Proceeds from revolving credit facility	170.0	120.0
Payments of revolving credit facility	(100.0)
Proceeds from long-term debt		500.0
Payments of long-term debt		(790.4)
Financing costs		(2.9)
Dividend paid	(29.1)	(25.9)
Payments from share-based compensation plans, net of tax	(7.8)	(8.6)
Payments for treasury stock acquired	(34.4)	(81.2)
Payments for finance leases	(1.2)
Net cash (used for) financing activities	(2.5)	(289.0)
Effect of exchange rate changes on cash and cash equivalents	(0.2)	0.8
Net increase (decrease) in cash and cash equivalents	93.5	(237.7)
Cash and cash equivalents at beginning of year of discontinued operations		10.0
Cash and cash equivalents at beginning of year of continuing operations	45.3	325.7
Cash and cash equivalents at end of period of continuing operations	138.8	98.0
Supplemental Cash Flow Disclosures:
Interest paid	18.2	26.9
Income tax payments, net	$ 6.3	46.3
Amounts in accounts payable for capital expenditures		$ 0.7