Consolidated Statements Of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 85,610	$ 83,298
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,976	6,470
Provision for bad debts, net	845	2,421
Non-cash stock compensation and other charges	10,262	6,969
Non-cash interest and other (income) loss	3,079	(987)
Dividends received from equity method investments	316	618
Equity in net income of affiliates	(262)	(890)
Changes in assets and liabilities, net of acquisitions:
Receivables	(15,494)	(14,511)
Receivable - marketing and reservation fees, net	(1,474)	(2,594)
Accounts payable	4,468	6,274
Accrued expenses	(10,584)	(1,210)
Income taxes payable/receivable	14,354	11,940
Deferred income taxes	2,839	(2,704)
Deferred revenue	9,375	19,443
Other assets	(556)	(11,755)
Other liabilities	(2,861)	5,457
Net cash provided by operating activities	105,893	108,239
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in property and equipment	(8,129)	(17,673)
Equity method investments	(3,600)	0
Acquisitions, net of cash acquired	0	(466)
Issuance of notes receivable	(4,320)	(8,901)
Collections of notes receivable	15	5,055
Purchases of investments, employee benefit plans	(1,051)	(1,396)
Proceeds from sale of investments, employee benefit plans	566	1,018
Other items, net	(312)	(296)
Net cash used in investing activities	(16,831)	(22,659)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings (repayments) pursuant to revolving credit facilities	(200)	(271,100)
Proceeds from issuance of long-term debt	75	247,733
Repayments of long-term debt	(74)	(20)
Settlement of forward starting interest rate swap agreement	0	(8,663)
Purchase of treasury stock	(24,796)	(11,171)
Dividends paid	(32,923)	(32,884)
Excess tax benefits from stock-based compensation	1,108	331
Debt issuance costs	(2,356)	(804)
Proceeds from exercise of stock options	3,726	1,321
Net cash used in financing activities	(55,440)	(75,257)
Net change in cash and cash equivalents	33,622	10,323
Effect of foreign exchange rate changes on cash and cash equivalents	(147)	1,355
Cash and cash equivalents at beginning of period	91,259	67,870
Cash and cash equivalents at end of period	124,734	79,548
Cash payments during the period for:
Income taxes, net of refunds	17,222	26,561
Interest	15,098	1,924
Non-cash investing and financing activities:
Declaration of dividends	32,846	32,886
Capital lease obligation	1,053	2,483
Issuance of restricted shares of common stock	9,604	9,233
Issuance of performance vested restricted stock units	0	256
Issuance of treasury stock to employee stock purchase plan	$ 550	$ 424