CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash Flows from Operating Activities:
Net income	$ 150,112	$ 135,090
Adjustments to reconcile net income to net cash provided by operations:
Depreciation	109,821	108,259
Amortization	4,050	3,748
Stock based compensation	15,025	11,538
Provision for doubtful accounts	228	(516)
Deferred income taxes	(12,701)	(5,612)
Defined benefit plan expense	12,622	14,531
Equity in results of affiliates in excess of cash distributions received	1,868	609
Changes in balance sheet items, excluding effects from foreign currency adjustments:
Accounts receivable	(57,220)	(42,531)
Inventories	(11,386)	(27,168)
Prepaid and other current assets	(14,984)	(15,416)
Accounts payable and accrued liabilities	5,236	8,544
Income taxes payable	(13,334)	10,312
Retirement and deferred compensation plans	(9,803)	(18,717)
Other changes, net	20,426	11,850
Net Cash Provided by Operations	199,960	194,521
Cash Flows from Investing Activities:
Capital expenditures	(125,465)	(110,350)
Disposition of property and equipment	1,002	2,207
Investment in unconsolidated affiliate		(13)
Notes receivable, net	(2,820)	(159)
Net Cash Used by Investing Activities	(127,283)	(108,315)
Cash Flows from Financing Activities:
Proceeds from notes payable	106,455	31,908
Proceeds from long-term obligations	2,816
Repayments of long-term obligations		(25,491)
Dividends paid	(52,943)	(49,674)
Credit facility costs	(299)	(498)
Proceeds from stock option exercises	24,564	38,368
Purchase of treasury stock	(90,517)	(80,222)
Excess tax benefit from exercise of stock options	4,959	5,058
Net Cash Used by Financing Activities	(4,965)	(80,551)
Effect of Exchange Rate Changes on Cash	(30,179)	12,441
Net Increase in Cash and Equivalents	37,533	18,096
Cash and Equivalents at Beginning of Period	309,861	229,755
Cash and Equivalents at End of Period	$ 347,394	$ 247,851