Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
OPERATING ACTIVITIES
Net earnings (loss)	$ (156,300,000)	$ 7,900,000	$ 107,200,000
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation And Amortization, Including Discontinued Operation	223,100,000	230,700,000	232,500,000
Employee stock ownership plan contribution	0	22,300,000	0
Impairment charges	100,000,000.0	26,500,000	12,000,000.0
Goodwill impairment	10,100,000	0	0
Amortization of debt issuance costs and original issue discount	3,600,000	3,500,000	3,500,000
Loss on debt extinguishment	30,500,000	0	2,600,000
Stock-based compensation	13,600,000	15,600,000	16,400,000
Gain on the sale or disposal of property, plant and equipment	(6,600,000)	(17,800,000)	(6,900,000)
Loss (gain) on the sale of a business	(8,400,000)	0	7,700,000
Gain from property insurance claims	(800,000)	(18,300,000)	(5,000,000.0)
Settlement loss on pension benefit plans	0	0	800,000
Deferred income taxes	(57,100,000)	(14,500,000)	(22,500,000)
Equity in (earnings) loss of unconsolidated entity	300,000	(1,000,000.0)	0
Changes in operating assets and liabilities—net of acquisitions:
Receivables	57,100,000	49,400,000	8,700,000
Inventories	61,300,000	(54,300,000)	13,100,000
Prepaid expenses and other current assets	(8,500,000)	1,700,000	3,800,000
Accounts payable and other current liabilities	(87,600,000)	23,200,000	9,900,000
Other	(18,800,000)	(14,300,000)	(39,800,000)
Net cash provided by operating activities	155,500,000	260,600,000	344,000,000.0
INVESTING ACTIVITIES
Purchases of property, plant and equipment	(111,000,000.0)	(96,300,000)	(85,900,000)
Proceeds from the sale of property, plant and equipment	17,500,000	32,700,000	23,900,000
Proceeds from the sale of a business	11,100,000	0	14,100,000
Proceeds from property insurance claims	300,000	14,500,000	8,000,000.0
Loan to an unconsolidated entity	(5,000,000.0)	0	(7,300,000)
Acquisition of businesses—net of cash acquired (Note 3)	(121,000,000.0)	(71,400,000)	0
Net cash used in investing activities	(208,100,000)	(120,500,000)	(47,200,000)
FINANCING ACTIVITIES
Proceeds from issuance of long-term debt	1,285,100,000	7,800,000	375,000,000.0
Payments of long-term debt	(1,119,400,000)	(33,200,000)	(522,900,000)
Payments of finance lease obligations	(8,700,000)	(6,300,000)	(7,600,000)
Borrowings on revolving credit facilities	3,636,100,000	2,563,700,000	718,500,000
Payments on revolving credit facilities	(3,642,100,000)	(2,561,100,000)	(736,000,000.0)
Payments of debt issuance costs and financing fees	(20,200,000)	0	(4,700,000)
Purchases of treasury stock	0	(36,700,000)	(3,800,000)
Proceeds from stock options exercised	0	4,200,000	2,600,000
Equity awards redeemed to pay employees’ tax obligations	(6,600,000)	(9,000,000.0)	(6,000,000.0)
Payment of cash dividends	(57,100,000)	(62,900,000)	(62,500,000)
Other financing activities	(5,300,000)	0	(4,300,000)
Net cash provided by (used in) financing activities	61,800,000	(133,500,000)	(251,700,000)
Effect of exchange rates on cash and cash equivalents	0	(1,500,000)	100,000
Net increase (decrease) in cash and cash equivalents	9,200,000	5,100,000	45,200,000
Cash and cash equivalents at beginning of year	69,500,000	64,400,000	19,200,000
Cash and cash equivalents at end of year	$ 78,700,000	$ 69,500,000	$ 64,400,000