CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Passenger ticket revenues	$ 1,366,713	$ 1,332,207	$ 2,760,491	$ 2,684,445
Onboard and other revenues	516,054	488,797	1,033,496	971,039
Total revenues	1,882,767	1,821,004	3,793,987	3,655,484
Cruise operating expenses:
Commissions, transportation and other	316,506	307,697	639,443	628,435
Onboard and other	140,710	130,981	262,197	238,576
Payroll and related	208,975	206,519	418,898	416,633
Food	112,530	109,300	232,013	222,925
Fuel	232,471	237,961	474,123	466,955
Other operating	312,427	303,556	579,135	577,602
Total cruise operating expenses	1,323,619	1,296,014	2,605,809	2,551,126
Marketing, selling and administrative expenses	259,626	247,571	533,660	512,172
Depreciation and amortization expenses	186,184	180,514	375,548	359,906
Operating Income	113,338	96,905	278,970	232,280
Other income (expense):
Interest income	3,405	4,972	7,152	11,318
Interest expense, net of interest capitalized	(86,877)	(89,106)	(177,059)	(181,772)
Other expense	(5,119)	(16,424)	(8,090)	(18,515)
Total other income (expense)	(88,591)	(100,558)	(177,997)	(188,969)
Net Income (Loss)	24,747	(3,653)	100,973	43,311
Earnings (Loss) per Share:
Basic (in dollars per share)	$ 0.11	$ (0.02)	$ 0.46	$ 0.20
Diluted (in dollars per share)	$ 0.11	$ (0.02)	$ 0.46	$ 0.20
Weighted-Average Shares Outstanding:
Basic (in shares)	219,502	217,866	219,301	217,725
Diluted (in shares)	220,648	217,866	220,596	219,217
Comprehensive Income (Loss)
Net Income (Loss)	24,747	(3,653)	100,973	43,311
Other comprehensive income (loss):
Foreign currency translation adjustments	(1,551)	(12,361)	(5,795)	(9,021)
Change in defined benefit plans	5,293		5,293
Gain (loss) on cash flow derivative hedges	17,542	(288,252)	(5,058)	(140,782)
Total other comprehensive income (loss)	21,284	(300,613)	(5,560)	(149,803)
Comprehensive Income (Loss)	$ 46,031	$ (304,266)	$ 95,413	$ (106,492)