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Consolidated Statements of Cash Flows - MXN ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Operating Activities: |  |  |
Income before income taxes | $ 10,851,642 | $ 8,205,589 | $ 18,657,668
Adjustments to reconcile income before income taxes to net cash provided by operating activities: |  |  |
Share of income of associates and joint ventures | (1,913,273) | (1,139,604) | (35,399)
Depreciation and amortization | 18,536,274 | 16,979,833 | 14,660,929
Other amortization of assets | 504,674 | 352,654 | 304,860
Impairment of long-lived assets | 89,597 | 6,851 | 131,065
Disposition of property and equipment | 947,699 | 1,448,295 | 688,706
Disposition of other intangible assets | 280,013 |  |
Provision for doubtful accounts and write-off receivables | 1,245,334 | 1,985,445 | 1,644,904
Post-employment benefits | 158,905 | (53,344) | 38,334
Interest income | (885,516) | (458,528) | (378,736)
Income from UHI |  |  | (2,194,981)
Share-based compensation expense | 1,489,884 | 1,410,492 | 1,199,489
Reclassifications from accumulated other comprehensive income |  |  | (5,262,577)
Expense on Senior Notes prepayment | 158,496 |  |
Provisions for related party transactions | 308,814 | 340,202 | 1,024,484
Other finance (income) loss, net | (903,204) | 43,370 | (917,682)
Loss (gain) on disposition of investments | 295,194 | 312 | (76,296)
Interest expense | 9,087,175 | 8,497,919 | 6,239,387
Unrealized foreign exchange (gain) loss, net | (2,396,317) | 6,707,831 | 4,032,871
Total | 37,855,391 | 44,327,317 | 39,757,026
Increase in trade notes and accounts receivable | (1,064,810) | (4,649,477) | (2,120,569)
Decrease (increase) in transmission rights and programming | 478,565 | 163,014 | (535,487)
Decrease (increase) in due from related parties, net | 135,730 | (432,736) | 527,515
Decrease (increase) in inventories | 360,563 | (262,016) | 1,705,238
Increase in other accounts and notes receivable and other current assets | 47,406 | (914,527) | (877,316)
(Decrease) increase in trade accounts payable and accrued expenses | (2,696,279) | 5,255,698 | 63,873
(Decrease) increase in customer deposits and advances | (2,878,358) | 688,097 | 459,215
(Decrease) increase in other liabilities, taxes payable | (385,451) | (204,722) | 192,113
Decrease in post-employment benefits | (333,026) | (44,819) | (62,373)
Income taxes paid | (6,419,995) | (7,268,938) | (7,823,659)
Total | (12,755,655) | (7,670,426) | (8,471,450)
Net cash provided by operating activities | 25,099,736 | 36,656,891 | 31,285,576
Investing activities: |  |  |
Temporary investments | 271,839 | 254,437 | 16,083
Income from UHI |  |  | 2,194,981
Held-to-maturity and available-for-sale investments | (262,401) | (302,631) | (89,552)
Disposition of held-to-maturity and available-for-sale investments | 310,629 | 74,086 | 362,416
Investment in associates and other investments | (147,110) | (231,004) | (92,141)
Disposition of investment | (14,357) |  | 76,335
Dividends received | 136,000 | 47,200 |
Investments in property, plant and equipment | (16,759,566) | (27,941,585) | (25,524,145)
Disposition of property, plant and equipment | 911,471 | 1,571,211 | 565,552
Investments in intangible assets | (1,777,590) | (2,472,124) | (1,553,801)
Net cash used in investing activities | (17,331,085) | (29,000,410) | (23,781,560)
Financing activities: |  |  |
Long-term Mexican banks | 5,973,000 | 5,728,498 | 2,487,936
Repayment of Mexican peso debt | (851,659) | (73,850) | (883,340)
Prepayment of Mexican peso debt | (625,000) | (3,548,750) | (5,905,601)
Payments of finance lease obligations | (569,711) | (329,064) | (405,151)
Interest paid | (8,860,881) | (7,633,026) | (5,938,679)
Funding for acquisition of shares of the Long-term Retention Plan | (2,500,000) |  |
Repurchases of CPOs under a share repurchase program | (383,808) |  |
Repurchase of capital stock | (2,301,918) | (1,720,807) | (733,831)
Sale of capital stock | 2,301,918 | 1,720,807 | 733,831
Dividends paid | (1,084,192) | (1,084,192) | (1,084,192)
Dividends paid and reduction of capital of non-controlling interests | (488,961) | (547,618) | (475,139)
Acquisition of a non-controlling interest |  | (2,379,424) |
Derivative financial instruments | (486,650) | (123,486) | (372,040)
Net cash (used in) provided by financing activities | (16,469,338) | (9,990,912) | 12,032,925
Effect of exchange rate changes on cash and cash equivalents | (110,447) | 483,388 | 130,835
Net (decrease) increase in cash and cash equivalents | (8,811,134) | (1,851,043) | 19,667,776
Cash and cash equivalents at beginning of year | 47,546,083 | 49,397,126 | 29,729,350
Cash and cash equivalents at end of year | 38,734,949 | 47,546,083 | 49,397,126
Non-cash transactions |  |  |
Issuance of other notes payable in the aggregate discounted amount |  | 4,750,000 |
Undiscounted amount |  | $ 5,106,250 |
Notes due 2027 |  |  |
Financing activities: |  |  |
Issuance of Notes | 4,476,958 |  |
Issuance of Notes due 2022 |  |  |
Financing activities: |  |  |
Issuance of Notes |  |  | 4,988,747
Issuance of Senior Notes due 2026 |  |  |
Financing activities: |  |  |
Issuance of Notes |  |  | 4,903,744
Issuance of Senior Notes due 2046 |  |  |
Financing activities: |  |  |
Issuance of Notes |  |  | 14,716,640
Senior Notes due 2018 |  |  |
Financing activities: |  |  |
Prepayment of Notes | (9,775,996) |  |
Other notes payable |  |  |
Financing activities: |  |  |
Prepayment of Notes | $ (1,292,438) |  |
GSF |  |  |
Investing activities: |  |  |
Disposition of investment in GSF |  |  | 10,335,813
Telecable |  |  |
Investing activities: |  |  |
Acquisition of Telecable, net of acquired cash and cash equivalents |  |  | (9,731,391)
Imagina |  |  |
Investing activities: |  |  |
Investment in associates and other investments |  |  | $ (341,710)

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- Definition The effect of exchange rate changes on cash and cash equivalents held or due in a foreign currency. [Refer: Cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_25&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 28 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_28&doctype=Standard -URIDate 2017-03-09 + Details
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