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Consolidated Statements of Cash Flows - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Operating activities: |  |  |
Net income (loss) | $ 126 | $ 113 | $ (19)
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |
Depreciation of property and equipment, including amortization of internal-use software and website development | 93 | 82 | 79
Amortization of intangible assets | 33 | 34 | 32
Stock-based compensation expense (Note 6) | 124 | 118 | 96
Deferred income tax expense (benefit) and other, net | 14 | 12 | 39
Changes in operating assets and liabilities, net of effects from acquisitions and other investments: |  |  |
Accounts receivable and contract assets, prepaid expenses and other assets | 23 | (8) | (36)
Accounts payable, accrued expenses and other liabilities | (1) | 22 |
Deferred merchant payables | (3) | 14 | 14
Income tax receivables/payables, net | 17 | 13 | 38
Deferred revenue | (2) | 5 | (5)
Net cash provided by operating activities | 424 | 405 | 238
Investing activities: |  |  |
Capital expenditures, including internal-use software and website development | (83) | (61) | (64)
Acquisitions and other investments, net of cash acquired (Note 3) | (110) | (24) |
Purchases of marketable securities | (133) | (16) | (63)
Sales of marketable securities | 80 | 59 | 105
Maturities of marketable securities | 70 | 5 | 28
Other investing activities, net |  | (12) |
Net cash provided by (used in) investing activities | (176) | (49) | 6
Financing activities: |  |  |
Repurchase of common stock (Note 16) | (60) | (100) | (250)
Payment of common stock cash dividends to stockholders (Note 16) | (488) |  |
Payments of finance lease obligation (Note 2) | (5) |  |
Proceeds from exercise of stock options | 2 | 6 | 3
Payment of withholding taxes on net share settlements of equity awards | (29) | (26) | (17)
Net cash used in financing activities | (580) | (358) | (200)
Effect of exchange rate changes on cash, cash equivalents and restricted cash | (4) | (16) | 17
Net increase (decrease) in cash, cash equivalents and restricted cash | (336) | (18) | 61
Cash, cash equivalents and restricted cash at beginning of period | 655 | 673 | 612
Cash, cash equivalents and restricted cash at end of period | 319 | 655 | 673
Supplemental disclosure of cash flow information: |  |  |
Cash paid during the period for income taxes, net of refunds | 47 | 53 | 62
Cash paid during the period for interest | 6 | 8 | 13
Supplemental disclosure of non-cash investing and financing activities: |  |  |
Stock-based compensation capitalized with internal-use software and website development costs | 19 | 13 | 13
Equity method investment acquired for non-cash consideration | $ 41 |  |
2015 Credit Facility |  |  |
Financing activities: |  |  |
Proceeds from credit facility, net of financing costs |  | 5 | 433
Payments to credit facility |  | (235) | (296)
Chinese Credit Facilities |  |  |
Financing activities: |  |  |
Payments to credit facility |  | (10) |
Proceeds from credit facility |  | $ 2 |
2016 Credit Facility |  |  |
Financing activities: |  |  |
Payments to credit facility |  |  | $ (73)

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