CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
Operating Activities
Net (loss) income		$ (4,408,195)	$ 1,627,126
Adjustments:
Depreciation and amortization		961,226	924,180
Impairment and credit losses		1,354,514	0
Net deferred income tax (benefit) expense		(4,586)	4,664
Loss on derivative instruments not designated as hedges		64,541	24,229
Share-based compensation expense		29,871	51,256
Equity investment loss (income)		140,258	(170,393)
Amortization of debt issuance costs		54,887	24,154
Amortization of commercial paper notes discount		7,269	23,583
Amortization of debt discounts and premiums		29,061	265
Loss on extinguishment of secured senior term loan		41,109	6,326
Currency translation adjustment losses		69,044	0
Change in fair value of contingent consideration		(45,126)	10,700
Changes in operating assets and liabilities:
Decrease (increase) in trade and other receivables, net		133,769	(36,682)
Decrease (increase) in inventories		19,675	(13,640)
Decrease in prepaid expenses and other assets		271,315	41,757
(Decrease) increase in accounts payable		(90,306)	51,011
Increase in accrued interest		164,284	50,011
(Decrease) increase in accrued expenses and other liabilities		(87,936)	81,026
(Decrease) increase in customer deposits		(1,608,355)	261,335
Dividends received from unconsolidated affiliates	[1]	2,215	148,285
Other, net		(4,789)	(2,125)
Net cash (used in) provided by operating activities		(2,906,255)	3,107,068
Investing Activities
Purchases of property and equipment		(1,573,241)	(2,341,895)
Cash received on settlement of derivative financial instruments		3,771	6,442
Cash paid on settlement of derivative financial instruments		(139,940)	(86,671)
Investments in and loans to unconsolidated affiliates		(87,943)	(6,889)
Cash received on loans to unconsolidated affiliates		15,581	27,697
Other, net		(6,921)	(1,028)
Net cash used in investing activities		(1,788,693)	(2,402,344)
Financing Activities
Debt proceeds		12,672,189	3,080,564
Debt issuance costs		(348,118)	(42,491)
Repayments of debt		(3,430,245)	(3,424,339)
Proceeds from issuance of commercial paper notes		6,765,816	19,807,417
Repayments of commercial paper notes		(7,837,635)	(19,684,288)
Dividends paid		(326,421)	(439,543)
Proceeds from exercise of common stock options		386	1,452
Other, net		(26,210)	(13,681)
Net cash provided by (used in) financing activities		7,469,762	(714,909)
Effect of exchange rate changes on cash		(1,764)	(937)
Net increase (decrease) in cash and cash equivalents		2,773,050	(11,122)
Cash and cash equivalents at beginning of period		243,738	287,852
Cash and cash equivalents at end of period		3,016,788	276,730
Cash paid during the period for:
Interest, net of amount capitalized		258,063	179,497
Non-cash Investing Activities
Notes receivable issued upon sale of property and equipment		53,419	0
Purchase of property and equipment included in accounts payable and accrued expenses and other liabilities		13,603	0
Non-cash Financing Activities
Purchase of Silversea Cruises non-controlling interest		592,313	0
Termination of Silversea Cruises contingent consideration obligation		$ 17,274	$ 0

[1] There were no dividends received from TUIC for the quarter and nine months ended September 30, 2020. For the quarter ended September 30, 2019, the amount includes dividends from TUIC of €80.0 million, or approximately $88.5 million, based on exchange rate at the time of the transaction. For the nine months ended September 30, 2019, amounts include dividends from TUIC of €170 million or approximately $190.3 million based on the exchange rates at the time of the transactions. The amounts included in the table above are net of tax withholding