CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows provided by (used in) operating activities:
Net income	$ 359,081	$ 308,722	$ 193,814
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	250,360	219,098	206,483
Amortization of debt discount and debt issuance costs	5,568	4,543	3,463
Rationalization charges	15,010	16,031	56,351
Stock compensation expense	20,921	18,780	17,078
Loss on early extinguishment of debt	1,372	1,481	1,676
Deferred income tax provision (benefit)	59,577	24,119	(20,859)
Other changes that provided (used) cash, net of effects from acquisitions:
Trade accounts receivable, net	(81,473)	(49,415)	3,800
Inventories	(109,548)	11,363	53
Trade accounts payable	171,972	21,303	16,453
Accrued liabilities	(30,293)	38,361	13,950
Other, net	(105,706)	(11,879)	15,093
Net cash provided by operating activities	556,841	602,507	507,355
Cash flows provided by (used in) investing activities:
Purchase of businesses, net of cash acquired	(745,670)	(940,875)	0
Capital expenditures	(232,264)	(224,177)	(230,944)
Other, net	1,975	1,868	854
Net cash used in investing activities	(975,959)	(1,163,184)	(230,090)
Cash flows provided by (used in) financing activities:
Borrowings under revolving loans	1,185,437	1,041,709	1,194,120
Repayments under revolving loans	(1,196,064)	(1,054,520)	(1,292,280)
Changes in outstanding checks – principally vendors	141,647	5,199	(4,664)
Proceeds from issuance of long-term debt	1,499,725	1,639,661	400,000
Repayments of long-term debt	(900,000)	(766,170)	(359,432)
Debt issuance costs	(11,073)	(10,265)	(4,825)
Dividends paid on common stock	(62,495)	(53,643)	(50,840)
Repurchase of common stock	(8,573)	(42,111)	(27,604)
Net cash provided by (used in) financing activities	648,604	759,860	(145,525)
Effect of exchange rate changes on cash and cash equivalents	(7,528)	6,474	(735)
Cash and cash equivalents:
Net increase	221,958	205,657	131,005
Balance at beginning of year	409,481	203,824	72,819
Balance at end of year	631,439	409,481	203,824
Interest paid, net	101,665	89,535	108,798
Income taxes paid, net of refunds	$ 94,426	$ 120,959	$ 40,650