Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 96,236	$ 85,610
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,989	5,976
Provision for bad debts, net	1,802	845
Non-cash stock compensation and other charges	7,306	10,262
Non-cash interest and other (income) loss	633	(3,079)
Loss on extinguishment of debt	526	0
Dividends received from equity method investments	855	316
Equity in net (income) loss of affiliates	12	(262)
Changes in assets and liabilities:
Receivables	(17,405)	(15,494)
Receivable - marketing and reservation fees, net	20,811	(1,474)
Accounts payable	5,980	4,468
Accrued expenses	(10,309)	(10,584)
Income taxes payable/receivable	12,786	14,354
Deferred income taxes	(1,627)	2,839
Deferred revenue	8,018	9,375
Other assets	(7,458)	(556)
Other liabilities	1,613	2,861
Net cash provided by operating activities	121,276	105,893
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in property and equipment	(12,525)	(8,129)
Equity method investments	(9,454)	(3,600)
Issuance of notes receivable	(7,305)	(4,320)
Collections of notes receivable	326	15
Purchases of investments, employee benefit plans	(1,191)	(1,051)
Proceeds from sales of investments, employee benefit plans	10,909	566
Other items, net	(322)	(312)
Net cash provided (used) by investing activities	(19,562)	(16,831)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings (repayments) pursuant to revolving credit facilities	16,725	(200)
Proceeds from issuance of long-term debt	543,500	75
Repayments of long-term debt	(502)	(74)
Purchase of treasury stock	(22,227)	(24,796)
Dividends paid	(632,751)	(32,923)
Excess tax benefits from stock-based compensation	793	1,108
Debt issuance costs	(4,753)	(2,356)
Proceeds from exercise of stock options	4,695	3,726
Net cash used by financing activities	(94,520)	(55,440)
Net change in cash and cash equivalents	7,194	33,622
Effect of foreign exchange rate changes on cash and cash equivalents	813	(147)
Cash and cash equivalents at beginning of period	107,057	91,259
Cash and cash equivalents at end of period	115,064	124,734
Cash payments during the period for:
Income taxes, net of refunds	25,700	17,222
Interest	15,666	15,098
Non-cash investing and financing activities:
Declaration of dividends	632,710	32,846
Capital lease obligation	0	1,053
Issuance of restricted shares of common stock	9,517	9,604
Issuance of treasury stock to employee stock purchase plan	0	550
Debt issuance costs	$ 6,500	$ 0