how to calculate the net income in this income statement , usually we just use pretax income - tax = net income, why there is not like that?

TYPE PERIOD INCOME STATEMENT ANNUAL DOWNLOAD FISCAL YEAR ENDS IN DEC CAD IN MILLIONS EXCEPT PER SHARE DATA DEC 19 DEC 18 DEC 17 DEC 16 DEC 15 TOTAL REVENUE 14,534.40 14,058.70 13,276.70 12,681 12,279.60 OPERATING REVENUE 14,534.40 14,058.70 13,276.70 12,681 12,279.60 EXCISE TAXES COST OF REVENUE 9.660.60 9,347.40 8,796.50 8,288.50 8,144.30 GROSS PROFIT 4,873.80 4,711.30 4.480.20 4,392.50 4.135.30 3,437.50 3,467.60 3,255.10 3,287.60 3,041.20 OPERATING EXPENSE SELLING GENERAL AND ADMINISTRATION 2.790.10 3,045.80 2.793 2,843 2,680.30 RESEARCH AND DEVELOPMENT - DEPRECIATION AND AMORTIZATION 647.40 421.80 461.90 448.90 415.80 DEPLETION PROVISION FOR DOUBTFUL ACCOUNTS - OTHER TAXES OTHER OPERATING EXPENSES - - 26 0.20 -4.30 -54.90 OPERATING INCOME 1,436.30 1,243.70 1.225.10 1,104.90 1,094.10 DEPRECIATION AND AMORTIZATION 647.40 421.80 461.90 448.90 415.80 DEPLETION - - PROVISION FOR DOUBTFUL ACCOUNTS _ OTHER TAXES OTHER OPERATING EXPENSES - 26 0.20 -4.30 -54.90 OPERATING INCOME 1,436.30 1.243.70 1,225.10 1,104.90 1,094.10 -266.80 - 151.50 -112.60 -93.90 -92.80 NET NON OPERATING INTEREST INCOME EXPENSE INTEREST INCOME NON OPERATING 27.60 9.90 10 9.40 14.10 INTEREST EXPENSE NON OPERATING 294.40 161.40 122.60 103.30 106.90 TOTAL OTHER FINANCE COST - - 13.40 -24 - - - OTHER INCOME EXPENSE GAIN ON SALE OF SECURITY -50 EARNINGS FROM EQUITY INTEREST SECURITIES AMORTIZATION SPECIAL INCOME CHARGES OTHER NON OPERATING INCOME EXPENSES PRETAX INCOME 1,182.90 1,068.20 1.112.50 1,011 1,001.30 TAX PROVISION 288.10 285.20 293.70 263.50 265.40 EARNINGS FROM EQUITY INTEREST NET OF TAX - - - - - 778.40 692.10 735 669.10 659.40 NET INCOME COMMON STOCKHOLDERS NET INCOME 778.40 692.10 735 669.10 659.40