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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Cash flows from operating activities |  |
Net income (loss) including non-controlling interests | $ 990 | $ (4,718)
Adjustments to reconcile net income (loss) to net cash used in operating activities: |  |
Depreciation and amortization | 438 | 257
Bad debt expense | 49 | 32
Stock-based compensation | 553 | 408
Gain on business divestitures | (1,684) | (127)
Deferred income taxes | (367) | (282)
Loss from equity method investments, net | 15 | 19
Unrealized (gain) loss on debt and equity securities, net | (1,975) | 116
Impairment of debt and equity securities | 0 | 1,850
Impairments of goodwill, long-lived assets and other assets | 16 | 297
Unrealized foreign currency transactions | (2) | 13
Other | 62 | 25
Change in assets and liabilities, net of impact of business acquisitions and disposals: |  |
Accounts receivable | (149) | 517
Prepaid expenses and other assets | (9) | 141
Collateral held by insurer | 136 | 178
Operating lease right-of-use assets | 77 | 137
Accounts payable | 185 | (10)
Accrued insurance reserves | 21 | (8)
Accrued expenses and other liabilities | 762 | (337)
Operating lease liabilities | (70) | (42)
Net cash used in operating activities | (952) | (1,534)
Cash flows from investing activities |  |
Purchases of property and equipment | (128) | (362)
Purchases of marketable securities | (526) | (1,012)
Purchases of non-marketable equity securities | (857) | (10)
Purchase of note receivable | (218) | (85)
Proceeds from maturities and sales of marketable securities | 1,143 | 422
Proceeds from sale of non-marketable equity securities | 500 | 0
Acquisition of businesses, net of cash acquired | (80) | (1,346)
Return of capital from equity method investee | 0 | 91
Other investing activities | 17 | (10)
Net cash used in investing activities | (149) | (2,312)
Cash flows from financing activities |  |
Issuance of senior notes, net of issuance costs | 0 | 992
Principal repayment on Careem Notes | (194) | (891)
Principal payments on finance leases | (108) | (119)
Proceeds from the issuance of common stock under the Employee Stock Purchase Plan | 67 | 82
Other financing activities | 45 | (9)
Net cash provided by (used in) financing activities | (190) | 55
Effect of exchange rate changes on cash and cash equivalents, and restricted cash and cash equivalents | 5 | (175)
Net decrease in cash and cash equivalents, and restricted cash and cash equivalents | (1,286) | (3,966)
Cash and cash equivalents, and restricted cash and cash equivalents |  |
Reclassification from assets held for sale during the period | 349 | 0
End of period | 6,454 | 8,101
Reconciliation of cash and cash equivalents, and restricted cash and cash equivalents to the condensed consolidated balance sheets |  |
Cash and cash equivalents | 4,443 | 6,754
Restricted cash and cash equivalents-current | 324 | 123
Restricted cash and cash equivalents-non-current | 1,687 | 1,224
Total cash and cash equivalents, and restricted cash and cash equivalents | 6,454 | 8,101
Cash paid for: |  |
Interest, net of amount capitalized | 216 | 211
Income taxes, net of refunds | 51 | 58
Non-cash investing and financing activities: |  |
Finance lease obligations | 83 | 131
Ownership interest received in exchange for the divestitures | 1,018 | 171
Conversion of convertible notes to common stock | 232 | 0
Issuance of Careem Notes including the holdback amount | $ 0 | $ 1,634

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