CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Consolidated net income (loss)	$ (200,168)	$ 721,574	$ 407,376
Adjustments to reconcile consolidated net income (loss) to net cash provided by operations:
Depreciation and amortization	189,790	186,384	153,599
Amortization of stock-based compensation	41,070	46,238	39,122
Equity in (earnings) losses of affiliated companies	2,765	2,332	(3,424)
Loss on extinguishment of debt	0	0	59,545
Deferred income taxes	(50,288)	1,236	38,412
(Gain) loss on investments, net	(11,462)	14,166	8,020
Loss on disposition of businesses, net	21,252	3,604	21,000
Pension settlement expense	20,111	1,665	16,706
Impairments	698,246	0	0
Other	10,659	9,198	10,466
Change in assets and liabilities, net of effects of acquired and disposed businesses:
Accounts receivable	338,849	(1,007,308)	(1,079,094)
Inventories	383,058	(618,875)	(379,835)
Accounts payable	(521,575)	936,423	816,602
Accrued expenses	(27,475)	112,123	(5,013)
Other assets and liabilities	(36,837)	(136,070)	21,075
Net cash provided by operating activities	857,995	272,690	124,557
Cash flows from investing activities:
Cash consideration paid for acquired businesses, net of cash acquired	0	(331,563)	(3,628)
Proceeds from (cash paid on) disposition of businesses	(13,094)	32,013	0
Acquisition of property, plant, and equipment	(143,191)	(135,336)	(203,949)
Proceeds from sale of property, plant, and equipment	0	5,421	24,433
Cash paid for customer relationship intangible asset	(7,616)	(20,000)	0
Other	(9,682)	(13,500)	(5,614)
Net cash used for investing activities	(173,583)	(462,965)	(188,758)
Cash flows from financing activities:
Change in short-term and other borrowings	(113,923)	192,192	(41,316)
Proceeds from (repayments of) long-term bank borrowings, net	(405,007)	306,635	47,760
Proceeds from note offering, net	0	0	986,203
Redemption of notes	0	(300,000)	(558,887)
Proceeds from exercise of stock options	16,911	8,819	22,195
Repurchases of common stock	(404,203)	(243,305)	(174,239)
Purchase of shares from noncontrolling interest	0	0	(23,350)
Other	(147)	(1,174)	(1,620)
Net cash provided by (used for) financing activities	(906,369)	(36,833)	256,746
Effect of exchange rate changes on cash	12,733	6,352	3,218
Net increase (decrease) in cash and cash equivalents	(209,224)	(220,756)	195,763
Cash and cash equivalents at beginning of year	509,327	730,083	534,320
Cash and cash equivalents at end of year	$ 300,103	$ 509,327	$ 730,083