CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 508,128	$ 524,922
Short-term investments	99,832	253,282
Assets held for sale	351,263	383,857
Accounts receivable, net	1,342,386	1,382,623
Inventory	235,042	251,133
Deferred income taxes	103,779	110,480
Other current assets	252,402	226,560
Total current assets	2,892,832	3,132,857
Long-term investments and other receivables	3,629	4,269
Property, plant and equipment, net	8,577,586	8,712,088
Goodwill	487,252	472,326
Investment in unconsolidated affiliates	68,444	61,690
Other long-term assets	237,160	272,792
Total assets	12,266,903	12,656,022
Current liabilities:
Current portion of debt	11,445	364
Trade accounts payable	498,081	499,010
Accrued liabilities	634,835	599,380
Income taxes payable	35,795	33,628
Total current liabilities	1,180,156	1,132,382
Long-term debt	4,071,191	4,379,336
Other long-term liabilities	464,465	518,664
Deferred income taxes	548,618	599,335
Total liabilities	6,264,430	6,629,717
Commitments and contingencies (Note 9)
Subsidiary preferred stock (Note 8)	69,188	69,188
Shareholders' equity:
Common shares, par value $0.001 per share: Authorized common shares 800,000; issued 323,421 and 318,813, respectively	323	319
Capital in excess of par value	2,376,245	2,337,244
Accumulated other comprehensive income	299,016	431,595
Retained earnings	4,191,606	4,120,398
Less: treasury shares, at cost, 28,414 common shares	(944,627)	(944,627)
Total shareholders' equity	5,922,563	5,944,929
Noncontrolling interest	10,722	12,188
Total equity	5,933,285	5,957,117
Total liabilities and equity	$ 12,266,903	$ 12,656,022