CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 204,687	$ 194,855
Trade and other receivables, net	259,746	281,421
Inventories	151,244	146,295
Prepaid expenses and other assets	252,852	207,662
Derivative financial instruments	87,845	57,827
Total current assets	956,374	888,060
Property and equipment, net	17,517,752	17,451,034
Goodwill	439,231	432,975
Other assets	1,159,590	1,055,861
Total assets	20,072,947	19,827,930
Current liabilities
Current portion of long-term debt	1,563,378	1,519,483
Accounts payable	372,226	351,587
Accrued interest	103,025	106,366
Accrued expenses and other liabilities	563,702	541,722
Customer deposits	1,664,679	1,546,993
Total current liabilities	4,267,010	4,066,151
Long-term debt	6,511,426	6,970,464
Other long-term liabilities	486,246	482,566
Commitments and contingencies (Note 15)
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; 230,782,315 and 229,080,109 shares issued, December 31, 2013 and December 31, 2012, respectively)	2,308	2,291
Paid-in capital	3,159,038	3,109,887
Retained earnings	6,054,952	5,744,791
Accumulated other comprehensive income (loss)	5,671	(134,516)
Treasury stock (10,308,683 common shares at cost, December 31, 2013 and December 31, 2012)	(413,704)	(413,704)
Total shareholders' equity	8,808,265	8,308,749
Total liabilities and shareholders' equity	$ 20,072,947	$ 19,827,930