CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 120,112	$ 132,603
Trade and other receivables, net	318,641	291,899
Inventories	111,393	114,087
Prepaid expenses and other assets	193,562	209,716
Derivative financial instruments	99,320	0
Total current assets	843,028	748,305
Property and equipment, net	19,735,180	20,161,427
Goodwill	288,512	288,386
Other assets	1,429,597	1,112,206
Total assets	22,296,317	22,310,324
Current liabilities
Current portion of long-term debt	1,188,514	1,285,735
Accounts payable	360,113	305,313
Accrued interest	47,469	46,166
Accrued expenses and other liabilities	903,022	692,322
Derivative financial instruments	47,464	146,592
Customer deposits	2,243,682	1,965,473
Total current liabilities	4,790,264	4,441,601
Long-term debt	6,350,937	8,101,701
Other long-term liabilities	452,813	645,610
Commitments and contingencies
Shareholders' equity
Preferred stock ($0.01 par value; 20,000,000 shares authorized; none outstanding)	0	0
Common stock ($0.01 par value; 500,000,000 shares authorized; 235,198,901 and 234,613,486 shares issued, December 31, 2017 and December 31, 2016, respectively)	2,352	2,346
Paid-in capital	3,390,117	3,328,517
Retained earnings	9,022,405	7,860,341
Accumulated other comprehensive loss	(334,265)	(916,484)
Treasury stock (21,861,308 and 20,019,237 common shares at cost, December 31, 2017 and December 31, 2016, respectively)	(1,378,306)	(1,153,308)
Total shareholders' equity	10,702,303	9,121,412
Total liabilities and shareholders' equity	$ 22,296,317	$ 22,310,324

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).