Unconsolidated Investments 2 (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Citrus [Member]
Balance Sheet Data [Line Items]
Current assets	$ 260,530	$ 107,108
Non-current assets	5,814,630	5,453,583
Current liabilities	847,505	316,952
Non-current liabilities	3,309,834	3,512,350
Other Unconsolidated Investments [Member]
Balance Sheet Data [Line Items]
Current assets	8,247	14,106
Non-current assets	42,763	44,602
Current liabilities	1,149	2,139
Non-current liabilities	$ 87	$ 185