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CONSOLIDATED INCOME STATEMENTS - ARS ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
CONSOLIDATED INCOME STATEMENTS |  |  |
Revenues | $ 301,596 | $ 322,686 | $ 351,948
Employee benefit expenses and severance payments | (58,476) | (63,348) | (62,316)
Interconnection and transmission costs | (11,254) | (10,238) | (11,572)
Fees for services, maintenance, materials and supplies | (33,012) | (36,223) | (34,672)
Taxes and fees with the Regulatory Authority | (23,020) | (25,029) | (28,502)
Commissions and advertising | (17,252) | (19,893) | (23,477)
Cost of equipment and handsets | (11,132) | (14,634) | (20,245)
Programming and content costs | (20,169) | (24,548) | (25,458)
Bad debt expenses | (10,805) | (8,619) | (7,387)
Other operating expenses | (13,588) | (15,212) | (20,263)
Depreciation, amortization and impairment of fixed assets | (82,594) | (83,439) | (73,535)
Operating income | 20,294 | 21,503 | 44,521
Earnings (losses) from associates | 496 | (255) | 494
Debt financial expenses | (24,698) | (22,677) | (71,150)
Other financial results, net | 7,055 | 15,426 | 31,786
Income before income tax (expense) benefit | 3,147 | 13,997 | 5,651
Income tax (expense) benefit | (8,251) | (19,290) | 5,943
Net (loss) income for the year | (5,104) | (5,293) | 11,594
Attributable to: |  |  |
Controlling Company | (5,715) | (5,985) | 11,089
Non-controlling interest | $ 611 | $ 692 | $ 505
(Loss) earnings per share attributable to Controlling Company |  |  |
Basic and diluted | $ (2.65) | $ (2.78) | $ 5.15

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- Definition The amount of expense arising from communication. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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