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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018
Operating Activities |  |  |
Net Income |  | $ 1,627,126 | $ 1,495,339
Adjustments: |  |  |
Depreciation and amortization |  | 924,180 | 753,529
Impairment losses |  | 0 | 33,651
Net deferred income tax expense (benefit) |  | 4,664 | (2,926)
Loss on derivative instruments not designated as hedges |  | 24,229 | 41,397
Share-based compensation expense |  | 51,256 | 63,420
Equity investment income |  | (170,393) | (168,232)
Amortization of debt issuance costs |  | 24,154 | 31,656
Amortization of commercial paper notes discount |  | 23,583 | 3,844
Loss on extinguishment of debt |  | 6,326 | 0
Change in fair value of contingent consideration |  | 10,700 | 0
Gain on sale of unconsolidated affiliate |  | 0 | (13,680)
Recognition of deferred gain |  | 0 | (21,794)
Changes in operating assets and liabilities: |  |  |
Increase in trade and other receivables, net |  | (36,682) | (17,141)
Increase in inventories |  | (13,640) | (21,760)
Decrease (increase) in prepaid expenses and other assets |  | 41,757 | (76,471)
Increase in accounts payable |  | 51,011 | 35,433
Increase in accrued interest |  | 50,011 | 45,735
Increase (decrease) in accrued expenses and other liabilities |  | 81,026 | (15,856)
Increase in customer deposits |  | 261,335 | 349,230
Dividends received from unconsolidated affiliates | [1] | 148,285 | 241,697
Other, net |  | (1,860) | (10,087)
Net cash provided by operating activities |  | 3,107,068 | 2,746,984
Investing Activities |  |  |
Purchases of property and equipment |  | (2,341,895) | (2,509,127)
Cash received on settlement of derivative financial instruments |  | 6,442 | 74,008
Cash paid on settlement of derivative financial instruments |  | (86,671) | (50,891)
Investments in and loans to unconsolidated affiliates |  | (6,889) | (15,194)
Cash received on loans to unconsolidated affiliates |  | 27,697 | 49,501
Proceeds from the sale of unconsolidated affiliate |  | 0 | 13,215
Acquisition of Silversea Cruises, net of cash acquired |  | 0 | (916,135)
Other, net |  | (1,028) | (3,989)
Net cash used in investing activities |  | (2,402,344) | (3,358,612)
Financing Activities |  |  |
Debt proceeds |  | 3,080,564 | 6,626,295
Debt issuance costs |  | (42,491) | (54,775)
Repayments of debt |  | (3,424,339) | (5,833,602)
Proceeds from issuance of commercial paper notes |  | 19,807,417 | 2,165,991
Repayments of commercial paper notes |  | (19,684,288) | (1,171,000)
Purchases of treasury stock |  | 0 | (575,039)
Dividends paid |  | (439,543) | (381,465)
Proceeds from exercise of common stock options |  | 1,452 | 4,206
Other, net |  | (13,681) | (14,857)
Net cash (used in) provided by financing activities |  | (714,909) | 765,754
Effect of exchange rate changes on cash |  | (937) | (19,417)
Net (decrease) increase in cash and cash equivalents |  | (11,122) | 134,709
Cash and cash equivalents at beginning of period |  | 287,852 | 120,112
Cash and cash equivalents at end of period |  | 276,730 | 254,821
Cash paid during the period for: |  |  |
Interest, net of amount capitalized |  | 179,497 | 154,231
Non-cash Investing Activities |  |  |
Contingent consideration for the acquisition of Silversea Cruises |  | $ 0 | $ 44,000
[1] | For the quarter ended September 30, 2019, TUI Cruises paid us dividends of €80.0 million, or approximately $88.5 million, based on the exchange rate at the time of the transactions. For the nine months ended September 30, 2019, TUI Cruises paid us dividends totaling €170.0 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 withholdings.

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- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585 + Details
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