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CONSOLIDATED STATEMENTS OF EARNINGS - CAD CAD in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Revenues |  |  |  |
Commodity sales | CAD 5,470 | CAD 5,975 | CAD 10,274 | CAD 11,206
Gas distribution sales | 504 | 528 | 1,511 | 2,119
Transportation and other services | 1,965 | 2,128 | 4,949 | 3,235
Total revenues | 7,939 | 8,631 | 16,734 | 16,560
Expenses |  |  |  |
Commodity costs | 5,303 | 5,799 | 10,014 | 10,841
Gas distribution costs | 284 | 300 | 1,038 | 1,664
Operating and administrative | 1,003 | 928 | 2,083 | 1,919
Depreciation and amortization | 555 | 485 | 1,114 | 959
Environmental costs, net of recoveries |  | 7 | 17 | (4)
Goodwill impairment |  | 440 |  | 440
Total expenses | 7,145 | 7,959 | 14,266 | 15,819
Total operating income | 794 | 672 | 2,468 | 741
Income/(loss) from equity investments (Note 6) | (37) | 109 | 189 | 242
Other income/(expense) | (26) | 158 | 250 | (299)
Interest expense | (369) | (284) | (781) | (535)
Earnings from continuing operations before income taxes | 362 | 655 | 2,126 | 149
Income taxes recovery/(expense) (Note 13) | (10) | (232) | (427) | 53
Earnings | 352 | 423 | 1,699 | 202
Loss attributable to noncontrolling interests and redeemable noncontrolling interests | 20 | 224 | (41) | 134
Earnings attributable to Enbridge Inc. | 372 | 647 | 1,658 | 336
Preference share dividends | (71) | (70) | (144) | (142)
Earnings attributable to Enbridge Inc. common shareholders | CAD 301 | CAD 577 | CAD 1,514 | CAD 194
Earnings per common share attributable to Enbridge Inc. common shareholders |  |  |  |
Earnings per common share attributable to Enbridge Inc. common shareholders (Note 10) (in Canadian dollars per share) | CAD 0.33 | CAD 0.68 | CAD 1.69 | CAD 0.23
Diluted earnings per common share attributable to Enbridge Inc. common shareholders |  |  |  |
Diluted earnings per common share attributable to Enbridge Inc. common shareholders (Note 10) (in Canadian dollars per share) | CAD 0.33 | CAD 0.67 | CAD 1.67 | CAD 0.23

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- Definition Total costs incurred and are directly related to energy commodities and services provided during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(d),(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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Balance Type: | credit
Period Type: | duration