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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Statement of Cash Flows [Abstract] |  |  |  |
Net Income |  | $ 1,815,792 | $ 1,625,133 | $ 1,283,388
Adjustments: |  |  |  |
Depreciation and amortization |  | 1,033,697 | 951,194 | 894,915
Impairment losses |  | 33,651 | 0 | 0
Net deferred income tax (benefit) expense |  | (2,679) | 1,730 | 2,608
Loss (gain) on derivative instruments not designated as hedges |  | 61,148 | (61,704) | 45,670
Share-based compensation expense |  | 46,061 | 69,459 | 32,659
Equity investment income |  | (210,756) | (156,247) | (128,350)
Amortization of debt issuance costs |  | 41,978 | 45,943 | 52,795
Gain on sale of property and equipment |  | 0 | (30,902) | 0
Gain on sale of unconsolidated affiliate |  | (13,680) | 0 | 0
Recognition of deferred gain |  | (21,794) | 0 | 0
Changes in operating assets and liabilities: |  |  |  |
(Increase) decrease in trade and other receivables, net |  | (9,573) | (32,043) | 4,759
(Increase) decrease in inventories |  | (23,849) | 2,424 | (1,679)
(Increase) decrease in prepaid expenses and other assets |  | (71,770) | 20,859 | 11,519
Increase in accounts payable |  | 91,737 | 36,780 | 29,564
Increase in accrued interest |  | 18,773 | 1,303 | 7,841
Increase in accrued expenses and other liabilities |  | 42,937 | 34,215 | 20,718
Increase in customer deposits |  | 385,990 | 274,705 | 188,632
Dividends received from unconsolidated affiliates |  | 243,101 | 109,677 | 75,942
Other, net |  | 18,375 | (17,960) | (4,291)
Net cash provided by operating activities |  | 3,479,139 | 2,874,566 | 2,516,690
Investing Activities |  |  |  |
Purchases of property and equipment |  | (3,660,028) | (564,138) | (2,494,363)
Cash received on settlement of derivative financial instruments |  | 76,529 | 63,224 | 110,637
Cash paid on settlement of derivative financial instruments |  | (98,074) | 0 | (323,839)
Investments in and loans to unconsolidated affiliates |  | (27,172) | (10,396) | (9,155)
Cash received on loans to unconsolidated affiliates |  | 124,238 | 62,303 | 38,213
Proceeds from the sale of property and equipment |  | 0 | 230,000 | 0
Proceeds from the sale of unconsolidated affiliate |  | 13,215 | 0 | 0
Acquisition of Silversea Cruises, net of cash acquired |  | (916,135) | 0 | 0
Other, net | [1] | (1,731) | 5,415 | (46,385)
Net cash used in investing activities |  | (4,489,158) | (213,592) | (2,724,892)
Financing Activities |  |  |  |
Debt proceeds |  | 8,590,740 | 5,866,966 | 7,338,560
Debt issuance costs |  | (81,959) | (51,590) | (88,241)
Repayments of debt |  | (6,963,511) | (7,835,087) | (6,365,570)
Proceeds from issuance of commercial paper notes |  | 4,730,286 | 0 | 0
Repayments of commercial paper notes |  | (3,965,450) | 0 | 0
Purchase of treasury stock |  | (575,039) | (224,998) | (299,960)
Dividends paid |  | (527,494) | (437,455) | (346,487)
Proceeds from exercise of common stock options |  | 4,264 | 2,525 | 2,258
Other, net |  | (13,764) | 3,843 | 3,249
Net cash provided by (used in) financing activities |  | 1,198,073 | (2,675,796) | 243,809
Effect of exchange rate changes on cash |  | (20,314) | 2,331 | (24,569)
Net increase (decrease) in cash and cash equivalents |  | 167,740 | (12,491) | 11,038
Cash and cash equivalents at beginning of year |  | 120,112 | 132,603 | 121,565
Cash and cash equivalents at end of year |  | 287,852 | 120,112 | 132,603
Cash paid during the year for: |  |  |  |
Interest, net of amount capitalized |  | 252,466 | 249,615 | 256,775
Non-Cash Investing Activities |  |  |  |
Contingent consideration for the acquisition of Silversea Cruises |  | 44,000 | 0 | 0
Purchases of property and equipment included in accounts payable and accrued expenses and other liabilities |  | 0 | 139,644 | 0
Notes receivable issued upon sale of property and equipment |  | $ 0 | $ 20,409 | 213,042
Divestiture of Pullmantur Holdings |  |  |  | $ 26,000
[1] | Amount includes $26.0 million in 2016 related to cash included in the divestiture of Pullmantur Holdings.

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- Definition Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(3)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition Amount of cash inflow (outflow) from financing activities classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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