CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 194,855	$ 262,186
Trade and other receivables, net	281,421	292,447
Inventories	146,295	144,553
Prepaid expenses and other assets	207,662	185,460
Derivative financial instruments	57,827	84,642
Total current assets	888,060	969,288
Property and equipment, net	17,451,034	16,934,817
Goodwill	432,975	746,537
Other assets	1,055,861	1,153,763
Total assets	19,827,930	19,804,405
Current liabilities
Current portion of long-term debt	1,519,483	638,891
Accounts payable	351,587	304,623
Accrued interest	106,366	123,853
Accrued expenses and other liabilities	541,722	564,272
Customer deposits	1,546,993	1,436,003
Total current liabilities	4,066,151	3,067,642
Long-term debt	6,970,464	7,856,962
Other long-term liabilities	482,566	471,978
Commitments and contingencies (Note 14)
Shareholders' equity
Preferred stock ($0.01 par value; 20,000,000 shares authorized; none outstanding)
Common stock ($0.01 par value; 500,000,000 shares authorized; 229,080,109 and 227,366,165 shares issued, December 31, 2012 and December 31, 2011, respectively)	2,291	2,276
Paid-in capital	3,109,887	3,071,759
Retained earnings	5,744,791	5,823,430
Accumulated other comprehensive loss	(134,516)	(75,938)
Treasury stock (10,308,683 common shares at cost, December 31, 2012 and December 31, 2011)	(413,704)	(413,704)
Total shareholders' equity	8,308,749	8,407,823
Total liabilities and shareholders' equity	$ 19,827,930	$ 19,804,405