CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Consolidated net income	$ 407,162	$ 524,723	$ 500,486
Adjustments to reconcile consolidated net income to net cash provided by operations:
Depreciation and amortization	153,599	159,195	155,754
Amortization of stock-based compensation	39,122	39,825	47,274
Equity in earnings of affiliated companies	(3,424)	(7,573)	(7,037)
Loss on extinguishment of debt	59,545	0	2,943
Deferred income taxes	38,412	28,130	5,833
Loss on investment, net	14,231	0	992
Impairment of assets held for sale	21,000	0	0
Impairment of property, plant and equipment	4,761	0	0
Other	5,704	5,972	4,951
Change in assets and liabilities, net of effects of acquired businesses:
Accounts receivable	(1,122,598)	(636,944)	(68,990)
Inventories	(379,835)	(403,980)	(42,790)
Accounts payable	816,602	582,165	33,398
Accrued expenses	(3,838)	47,020	56,139
Other assets and liabilities	74,114	21,139	(28,945)
Net cash provided by operating activities	124,557	359,672	660,008
Cash flows from investing activities:
Cash consideration paid for acquired businesses	(3,628)	(64,751)	(514,731)
Acquisition of property, plant, and equipment	(203,949)	(164,695)	(154,800)
Proceeds from sale of property, plant, and equipment	24,433	0	3,496
Proceeds from sale of investment	0	0	2,008
Other	(5,614)	(12,000)	0
Net cash used for investing activities	(188,758)	(241,446)	(664,027)
Cash flows from financing activities:
Change in short-term and other borrowings	(41,316)	48,684	(46,645)
Proceeds from (repayment of) long-term bank borrowings, net	47,760	313,000	(128,000)
Proceeds from note offering, net	986,203	0	688,162
Redemption of notes	(558,887)	0	(254,313)
Proceeds from exercise of stock options	22,195	18,967	14,900
Repurchases of common stock	(174,239)	(216,446)	(356,434)
Purchase of shares from non-controlling interest	(23,350)	0	(4,675)
Other	(1,620)	(2,007)	(2,111)
Net cash provided by (used for) financing activities	256,746	162,198	(89,116)
Effect of exchange rate changes on cash	3,218	(19,194)	(34,130)
Net increase (decrease) in cash and cash equivalents	195,763	261,230	(127,265)
Cash and cash equivalents at beginning of year	534,320	273,090	400,355
Cash and cash equivalents at end of year	$ 730,083	$ 534,320	$ 273,090