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v3.19.3.a.u2

Accumulated Other Comprehensive Income (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Components and changes in accumulated other comprehensive Income (loss) |  |  |  |
Accumulated other comprehensive income, beginning of the period |  | $ 481 |  |
Currency translation adjustment |  |  |  |
Losses on translating net assets of foreign operations, net of reclassifications to net earnings, net of tax |  | 38 | $ (43) |
Gains (losses) on financial instruments designated as hedges of foreign operations, net of tax | [1] | 21 | (41) | $ 50
Cash flow hedges |  |  |  |
Gains (losses) on derivatives designated as cash flow hedges, net of tax | [2] | 61 | (8) | 214
Other |  |  |  |
Intercompany FVOCI investments |  | 0 | 0 |
Accumulated other comprehensive income, end of the period |  | 454 | 481 |
Income tax relating to hedges of net investments in foreign operations of other comprehensive income |  | 0 | 0 | 2
Net impact related to cash flow hedges |  | 6 | (12) | (108)
Income tax relating to net actuarial gains (losses) |  | (7) | 5 | (4)
Reserve of exchange differences on translation |  |  |  |
Components and changes in accumulated other comprehensive Income (loss) |  |  |  |
Accumulated other comprehensive income, beginning of the period |  | 17 | (26) |
Currency translation adjustment |  |  |  |
Losses on translating net assets of foreign operations, net of reclassifications to net earnings, net of tax |  | (59) | 84 |
Gains (losses) on financial instruments designated as hedges of foreign operations, net of tax |  | 21 | (41) |
Other |  |  |  |
Accumulated other comprehensive income, end of the period |  | (21) | 17 | (26)
Reserve of cash flow hedges [member] |  |  |  |
Components and changes in accumulated other comprehensive Income (loss) |  |  |  |
Accumulated other comprehensive income, beginning of the period |  | 508 | 562 |
Cash flow hedges |  |  |  |
Gains (losses) on derivatives designated as cash flow hedges, net of tax |  | 19 | (54) |
Other |  |  |  |
Accumulated other comprehensive income, end of the period |  | 527 | 508 | 562
Net impact related to cash flow hedges |  | (6) | 12 |
Reserve of remeasurements of defined benefit plans [member] |  |  |  |
Components and changes in accumulated other comprehensive Income (loss) |  |  |  |
Accumulated other comprehensive income, beginning of the period |  | (29) | (44) |
Employee future benefits |  |  |  |
Net actuarial gains (losses) on defined benefit plans, net of tax |  | (26) | 15 |
Other |  |  |  |
Accumulated other comprehensive income, end of the period |  | (55) | (29) | (44)
Income tax relating to net actuarial gains (losses) |  | 7 | 5 |
Other reserves [member] |  |  |  |
Components and changes in accumulated other comprehensive Income (loss) |  |  |  |
Accumulated other comprehensive income, beginning of the period |  | (15) | (3) |
Other |  |  |  |
Change in ownership of TransAlta Renewables |  | 1 | 4 |
Intercompany FVOCI investments | [3] | 17 |  |
Intercompany Available-For-Sale Investments |  |  | (16) |
Accumulated other comprehensive income, end of the period |  | $ 3 | $ (15) | $ (3)
[1] | (3) Net of income tax expense of nil for the year ended Dec. 31, 2019 (2018 - nil, 2017 - $2 million expense).
[2] | (5) Net of income tax expense of $16 million for the year ended Dec. 31, 2019 (2018 - $1 million recovery, 2017 - $77 million recovery).
[3] | (1) Refer to Note 28 for details on components of, and changes in, accumulated other comprehensive income (loss).

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- Definition The gains (losses) recognised in other comprehensive income on hedges of net investments in foreign operations, net of tax. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 39 -IssueDate 2018-01-01 -Paragraph 102 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=39&date=2018-03-01&anchor=para_102_a&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 24C -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_24C_b_i&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 24E -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_24E_a&doctype=Standard -URIDate 2018-03-16 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 91 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_91_a&doctype=Standard -URIDate 2018-03-16 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 9 -IssueDate 2018-01-01 -Paragraph 6.5.13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=9&date=2018-03-01&anchor=para_6.5.13_a&doctype=Standard -URIDate 2018-03-16 + Details
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