CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 320,398	$ 398,575
Short-term investments	134,784	140,914
Assets held for sale	396,413	401,500
Accounts receivable, net	1,607,422	1,576,555
Inventory	259,943	272,852
Deferred income taxes	70,288	127,874
Other current assets	185,922	170,044
Total current assets	2,975,170	3,088,314
Long-term investments and other receivables	5,452	11,124
Property, plant and equipment, net	8,904,324	8,629,946
Goodwill	471,913	501,258
Investment in unconsolidated affiliates	165,003	371,021
Other long-term assets	321,610	310,477
Total assets	12,843,472	12,912,140
Current liabilities:
Current portion of long-term debt	275,323	275,326
Trade accounts payable	606,571	782,753
Accrued liabilities	604,627	744,483
Total current liabilities	1,486,521	1,802,562
Long-term debt	4,398,452	4,348,490
Other long-term liabilities	326,202	292,758
Deferred income taxes	834,207	797,925
Total liabilities	7,045,382	7,241,735
Commitments and contingencies (Note 12)
Subsidiary preferred stock	69,188	69,188
Shareholders' equity:
Common shares, par value $.001 per share: Authorized common shares 800,000; issued 318,719 and 317,042, respectively	319	317
Capital in excess of par value	2,326,590	2,287,743
Accumulated other comprehensive income	318,088	321,264
Retained earnings	4,017,665	3,956,364
Less: treasury shares, at cost, 28,414 and 29,414 common shares, respectively	(944,627)	(977,873)
Total shareholders' equity	5,718,035	5,587,815
Noncontrolling interest	10,867	13,402
Total equity	5,728,902	5,601,217
Total liabilities and equity	$ 12,843,472	$ 12,912,140