Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net (loss) earnings	$ (175.9)	$ 93.6
Adjustments to reconcile net (loss) earnings to net cash provided by operating activities:
Depreciation and amortization	37.5	33.8
Loss on disposal of discontinued operations	4.2	4.6
Gain on sale of fixed and intangible assets	(14.1)
Deferred income taxes	(89.9)	12.2
Share-based compensation	3.8	4.1
Equity earnings from joint venture	(33.0)	(40.1)
U.S. pension cost (credit)	369.7	(3.8)
Other non-cash adjustments, net	0.5	1.0
Changes in operating assets and liabilities:
Receivables	(1.3)	(14.4)
Inventories	(6.4)	(10.0)
Accounts payable and accrued expenses	(26.2)	(24.5)
Other assets and liabilities	9.8	(9.5)
Net cash provided by operating activities	78.7	47.0
Cash flows from investing activities:
Purchases of property, plant and equipment	(18.5)	(27.1)
Return of investment from joint venture	42.4	38.6
Cash paid for acquisitions		(43.1)
Payments of proceeds from Knauf to investment in joint venture	(20.0)
Other investing activities	6.4
Net cash provided by (used for) investing activities	10.3	(31.6)
Cash flows from financing activities:
Proceeds from short-term debt	30.0
Proceeds from revolving credit facility	100.0
Payments of revolving credit facility	(85.0)
Payments of long-term debt		(23.8)
Dividend paid	(19.5)	(17.3)
Payments from share-based compensation plans, net of tax	(7.8)	(13.4)
Payment for treasury stock acquired	(34.4)	(48.1)
Net cash (used for) financing activities	(16.7)	(102.6)
Effect of exchange rate changes on cash and cash equivalents	(0.5)	1.8
Net increase (decrease) in cash and cash equivalents	71.8	(85.4)
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	117.1	250.3
Cash and cash equivalents at end of period of discontinued operations		10.0
Cash and cash equivalents at end of period of continuing operations	117.1	240.3
Supplemental Cash Flow Disclosures:
Interest paid	12.6	19.4
Income tax payments, net	$ 1.1	23.6
Amounts in accounts payable for capital expenditures		$ 0.5