Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 91,430	$ 120,549
Accounts receivable, net of allowances for doubtful accounts	768,842	666,930
Inventory	441,789	331,280
Other current assets	131,214	84,231
Total Current Assets	1,433,275	1,202,990
Property and Equipment, at cost	2,380,888	2,069,119
Less accumulated depreciation	1,191,789	1,043,987
Net Property and Equipment	1,189,099	1,025,132
Other Assets:
Goodwill	344,018	363,193
Investments in unconsolidated affiliates	37,462	42,619
Other non-current assets	124,646	134,184
Total Other Assets	506,126	539,996
Total Assets	3,128,500	2,768,118
Current Liabilities:
Accounts payable	129,632	130,489
Accrued liabilities	516,628	408,303
Income taxes payable	80,828	78,393
Total Current Liabilities	727,088	617,185
Long-term Debt	0	94,000
Other Long-term Liabilities	357,972	241,473
Commitments and Contingencies
Stockholders' Equity:
Common Stock, par value $0.25	27,709	27,709
Additional paid-in capital	222,402	212,940
Treasury stock	(75,736)	(84,062)
Retained earnings	1,921,642	1,641,027
Accumulated other comprehensive income	(52,577)	17,846
Total Shareholders' Equity	2,043,440	1,815,460
Total Liabilities and Sharesholders' Equity	$ 3,128,500	$ 2,768,118