CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Consolidated net income	$ 721,574	$ 407,376	$ 524,788
Adjustments to reconcile consolidated net income to net cash provided by operations:
Depreciation and amortization	186,384	153,599	159,195
Amortization of stock-based compensation	46,238	39,122	39,825
Equity in (earnings) losses of affiliated companies	2,332	(3,424)	(7,573)
Loss on extinguishment of debt	0	59,545	0
Deferred income taxes	1,236	38,412	28,740
(Gain) loss on investments, net	14,166	8,020	(2,300)
Loss on disposition of businesses, net	3,604	21,000	0
Impairment of property, plant and equipment	0	4,761	0
Other	9,198	5,705	5,972
Change in assets and liabilities, net of effects of acquired and disposed businesses:
Accounts receivable	(1,007,308)	(1,079,094)	(600,925)
Inventories	(618,875)	(379,835)	(403,980)
Accounts payable	936,423	816,602	582,165
Accrued expenses	112,123	(5,013)	46,439
Other assets and liabilities	(134,405)	37,781	(12,674)
Net cash provided by operating activities	272,690	124,557	359,672
Cash flows from investing activities:
Cash consideration paid for acquired businesses, net of cash acquired	(331,563)	(3,628)	(64,751)
Proceeds from disposition of businesses	32,013	0	0
Acquisition of property, plant, and equipment	(135,336)	(203,949)	(164,695)
Proceeds from sale of property, plant, and equipment	5,421	24,433	0
Cash paid for customer relationship intangible asset	(20,000)	0	0
Other	(13,500)	(5,614)	(12,000)
Net cash used for investing activities	(462,965)	(188,758)	(241,446)
Cash flows from financing activities:
Change in short-term and other borrowings	192,192	(41,316)	48,684
Proceeds from long-term bank borrowings, net	306,635	47,760	313,000
Proceeds from note offering, net	0	986,203	0
Redemption of notes	(300,000)	(558,887)	0
Proceeds from exercise of stock options	8,819	22,195	18,967
Repurchases of common stock	(243,305)	(174,239)	(216,446)
Purchase of shares from non-controlling interest	0	(23,350)	0
Other	(1,174)	(1,620)	(2,007)
Net cash provided by (used for) financing activities	(36,833)	256,746	162,198
Effect of exchange rate changes on cash	6,352	3,218	(19,194)
Net increase (decrease) in cash and cash equivalents	(220,756)	195,763	261,230
Cash and cash equivalents at beginning of year	730,083	534,320	273,090
Cash and cash equivalents at end of year	$ 509,327	$ 730,083	$ 534,320