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COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables) | 12 Months Ended
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Dec. 31, 2012
COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE LOSS |
Schedule of Changes in AOCI attributable |
|  | Cash Flow Hedges |  | Net Investment Hedges |  | Cumulative Translation Adjustment |  | Equity Investees |  | Pension and OPEB Actuarial Gain/(Loss) Adjustment |  | Total |
(millions of Canadian dollars) |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at January 1, 2010 |  | 69 |  | 429 |  | (1,033 | ) | (15 | ) | (104 | ) | (654 | )
Changes during the year |  | (136 | ) | 61 |  | (255 | ) | 3 |  | (52 | ) | (379 | )
Tax impact |  | 1 |  | (10 | ) | - |  | 1 |  | 14 |  | 6 |
|  | (135 | ) | 51 |  | (255 | ) | 4 |  | (38 | ) | (373 | )
Balance at December 31, 2010 |  | (66 | ) | 480 |  | (1,288 | ) | (11 | ) | (142 | ) | (1,027 | )
Changes during the year |  | (563 | ) | (21 | ) | 85 |  | (20 | ) | (200 | ) | (719 | )
Tax impact |  | 153 |  | 2 |  | - |  | 3 |  | 56 |  | 214 |
|  | (410 | ) | (19 | ) | 85 |  | (17 | ) | (144 | ) | (505 | )
Balance at December 31, 2011 |  | (476 | ) | 461 |  | (1,203 | ) | (28 | ) | (286 | ) | (1,532 | )
Changes during the year |  | (190 | ) | 16 |  | (99 | ) | 7 |  | (52 | ) | (318 | )
Tax impact |  | 45 |  | (3 | ) | - |  | (5 | ) | 14 |  | 51 |
|  | (145 | ) | 13 |  | (99 | ) | 2 |  | (38 | ) | (267 | )
Balance at December 31, 2012 |  | (621 | ) | 474 |  | (1,302 | ) | (26 | ) | (324 | ) | (1,799 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580 + Details
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