Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 102,349	$ 120,549
Accounts receivable, net of allowances for doubtful accounts	747,667	666,930
Inventory	446,017	331,280
Other current assets	95,371	84,231
Total Current Assets	1,391,404	1,202,990
Property and Equipment, at cost	2,277,772	2,069,119
Less accumulated depreciation	1,150,278	1,043,987
Net Property and Equipment	1,127,494	1,025,132
Other Assets:
Goodwill	347,127	363,193
Investments in unconsolidated affiliates	38,669	42,619
Other non-current assets	123,832	134,184
Total Other Assets	509,628	539,996
Total Assets	3,028,526	2,768,118
Current Liabilities:
Accounts payable	152,297	130,489
Accrued liabilities	471,666	408,303
Income taxes payable	79,292	78,393
Total Current Liabilities	703,255	617,185
Long-term Debt	40,000	94,000
Other Long-term Liabilities	307,714	241,473
Commitments and Contingencies
Stockholders' Equity:
Common Stock	27,709	27,709
Additional paid-in capital	216,413	212,940
Treasury stock, at cost	(75,736)	(84,062)
Retained earnings	1,852,012	1,641,027
Accumulated other comprehensive income	(42,841)	17,846
Total Shareholders' Equity	1,977,557	1,815,460
Total Liabilities and Sharesholders' Equity	$ 3,028,526	$ 2,768,118