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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016
Cash flows from operating activities |  |
Net income (loss) | $ (1,584) | $ 334
Adjustments to reconcile to net cash provided by operating activities: |  |
Depreciation | 451 | 442
Share-based compensation expense | 21 | 23
Loss on impairment | 113 | 15
Loss on disposal of assets, net | 1,593 | 1
(Gain) loss on retirement of debt | 48 | (38)
Deferred tax expense (benefit) | (39) | 39
Other, net | 18 | 7
Changes in deferred revenues, net | (104) | (26)
Changes in deferred costs, net | 28 | 52
Changes in other operating assets and liabilities, net | (42) | (11)
Net cash provided by operating activities | 503 | 838
Cash flows from investing activities |  |
Capital expenditures | (258) | (826)
Proceeds from disposal of assets, net | 329 | 15
Other, net | (15) |
Net cash provided by (used in) investing activities | 56 | (811)
Cash flows from financing activities |  |
Proceeds from issuance of debt, net of issue costs | 403 |
Repayments of debt | (1,533) | (251)
Deposits to cash accounts restricted for financing activities | (57) | (24)
Proceeds from cash accounts and investments restricted for financing activities | 50 | 73
Distribution to holders of noncontrolling interest |  | (16)
Other, net | (3) | 5
Net cash used in financing activities | (1,140) | (213)
Net decrease in cash and cash equivalents | (581) | (186)
Cash and cash equivalents at beginning of period | 3,052 | 2,339
Cash and cash equivalents at end of period | $ 2,471 | $ 2,153

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