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income taxes (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
income taxes |
Expense composition |
Years ended December 31 (millions) |  | 2018 |  |  | 2017
|  |  |  |  | (adjusted –
|  |  |  |  | Note 2(c))
Current income tax expense |  |  |  |  |  |
For the current reporting period |  | $ | 483 |  | $ | 205
Adjustments recognized in the current period for income taxes of prior periods |  |  | (5) |  |  | (82)
|  |  | 478 |  |  | 123
Deferred income tax expense (recovery) |  |  |  |  |  |
Arising from the origination and reversal of temporary differences |  |  | 75 |  |  | 361
Revaluation of deferred income tax liability to reflect future income tax rates |  |  | — |  |  | 28
Adjustments recognized in the current period for income taxes of prior periods |  |  | (1) |  |  | 78
|  |  | 74 |  |  | 467
|  | $ | 552 |  | $ | 590
Rate reconciliations |
Years ended December 31 ($ in millions) |  | 2018 |  | 2017 |
|  |  |  |  |  |  | (adjusted –Note 2(c)) |
Income taxes computed at applicable statutory rates |  | $ | 586 |  | 27.0 | % | $ | 578 |  | 26.7 | %
Revaluation of deferred income tax liability to reflect future income tax rates |  |  | — |  | — |  |  | 28 |  | 1.3 |
Adjustments recognized in the current period for income taxes of prior periods |  |  | (6) |  | (0.3) |  |  | (4) |  | (0.2) |
Other |  |  | (28) |  | (1.3) |  |  | (12) |  | (0.6) |
Income tax expense per Consolidated statements of income and other comprehensive income |  | $ | 552 |  | 25.4 | % | $ | 590 |  | 27.2 | %
Temporary differences |
|  | Property, plant |  |  |  |  |  |  | Net pension |  |  |  |  |  |  |  |  |  |  | Partnership |  |
|  | and equipment |  |  |  |  |  |  | and share- |  |  |  |  | Losses |  |  |  |  | income |  |
|  | and intangible |  | Intangible |  | Contract |  | based |  | Provisions not |  | available to |  |  |  |  | unallocated for |  | Net deferred
|  | assets subject |  | assets with |  | assets with |  | compensation |  | currently |  | be carried |  |  |  |  | income tax |  | income tax
(millions) |  | to amortization |  | indefinite lives |  | liabilities |  | amounts |  | deductible |  | forward 1 |  | Other |  | purposes |  | liability
As at January 1, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
As previously reported |  | $ | 870 |  | $ | 1,457 |  | $ | — |  | $ | (48) |  | $ | (148) |  | $ | (6) |  | $ | (18) |  | $ | (5) |  | $ | 2,102
IFRS 15, Revenue from Contracts with Customers transitional amount (Note 2(c)) |  |  | — |  |  | — |  |  | 404 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 404
As adjusted 2 |  |  | 870 |  |  | 1,457 |  |  | 404 |  |  | (48) |  |  | (148) |  |  | (6) |  |  | (18) |  |  | (5) |  |  | 2,506
Deferred income tax expense recognized in |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (Note 2(c)) |  |  | 348 |  |  | 84 |  |  | 37 |  |  | (11) |  |  | 8 |  |  | (1) |  |  | (3) |  |  | 5 |  |  | 467
Other comprehensive income |  |  | — |  |  | — |  |  | — |  |  | (61) |  |  | — |  |  | — |  |  | 4 |  |  | — |  |  | (57)
Deferred income taxes charged directly to owners’ equity and other |  |  | 3 |  |  | 20 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (3) |  |  | — |  |  | 20
As at December 31, 2017 3 |  |  | 1,221 |  |  | 1,561 |  |  | 441 |  |  | (120) |  |  | (140) |  |  | (7) |  |  | (20) |  |  | — |  |  | 2,936
Deferred income tax expense recognized in |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  | 14 |  |  | 78 |  |  | 55 |  |  | (20) |  |  | (10) |  |  | 1 |  |  | (44) |  |  | — |  |  | 74
Other comprehensive income |  |  | — |  |  | — |  |  | — |  |  | 119 |  |  | — |  |  | — |  |  | (6) |  |  | — |  |  | 113
Deferred income taxes charged directly to owners’ equity and other |  |  | (2) |  |  | 79 |  |  | — |  |  | — |  |  | (54) |  |  | — |  |  | 1 |  |  | — |  |  | 24
As at December 31, 2018 4 |  | $ | 1,233 |  | $ | 1,718 |  | $ | 496 |  | $ | (21) |  | $ | (204) |  | $ | (6) |  | $ | (69) |  | $ | — |  | $ | 3,147
| 1 |  | We expect to be able to utilize our non-capital losses prior to expiry.
| 2 |  | Deferred tax liability of $2,511, net of deferred tax asset of $5 (included in Other long-term assets).
| 3 |  | Deferred tax liability of $2,941, net of deferred tax asset of $5 (included in Other long-term assets).
| 4 |  | Deferred tax liability of $3,152, net of deferred tax asset of $5 (included in Other long-term assets).

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carry-forwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References No definition available. + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pre-tax income from continuing operations. + References No definition available. + Details
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