CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 205,174	$ 194,855
Trade and other receivables, net	310,051	281,421
Inventories	141,440	146,295
Prepaid expenses and other assets	270,392	207,662
Derivative financial instruments	26,037	57,827
Total current assets	953,094	888,060
Property and equipment, net	17,511,913	17,451,034
Goodwill	430,666	432,975
Other assets	1,055,121	1,055,861
Total assets	19,950,794	19,827,930
Current liabilities
Current portion of long-term debt	1,906,468	1,519,483
Accounts payable	314,197	351,587
Accrued interest	75,107	106,366
Accrued expenses and other liabilities	541,699	541,722
Customer deposits	1,874,704	1,546,993
Total current liabilities	4,712,175	4,066,151
Long-term debt	6,347,640	6,970,464
Other long-term liabilities	524,720	482,566
Commitments and contingencies (Note 7)
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; 229,919,883 and 229,080,109 shares issued, June 30, 2013 and December 31, 2012, respectively)	2,299	2,291
Paid-in capital	3,125,172	3,109,887
Retained earnings	5,792,568	5,744,791
Accumulated other comprehensive loss	(140,076)	(134,516)
Treasury stock (10,308,683 common shares at cost, June 30, 2013 and December 31, 2012)	(413,704)	(413,704)
Total shareholders' equity	8,366,259	8,308,749
Total liabilities and shareholders' equity	$ 19,950,794	$ 19,827,930