XML 159 R131.htm IDEA: XBRL DOCUMENT
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Property, Plant, and Equipment - Reconciliation of the changes in the carrying amount of PP&E (Details) - CAD CAD in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Jun. 30, 2017
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | CAD 6,824 | CAD 7,173 |
Property, plant and equipment, end of the period | 6,578 | 6,824 |
Current spare parts |  |  | CAD 13
Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 12,773 | 12,854 |
Additions | 338 | 358 |
Disposals | (19) | (9) |
Reclassification to held for sale (Note 4) |  | (67) |
Impairment reversals |  | (1) |
Retirement of assets | (119) | (122) |
Change in foreign exchange rates | (119) | (85) |
Transfers(2) | (26) | (205) |
Property, plant and equipment, end of the period | 12,973 | 12,773 |
Accumulated depreciation and amortisation [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | (5,949) | (5,681) |
Disposals | (12) | (2) |
Reclassification to held for sale (Note 4) | (6) |  |
Retirement of assets | (90) | (101) |
Change in foreign exchange rates | (76) | (39) |
Transfers(2) | (11) | (191) |
Depreciation | 635 | 607 |
Property, plant and equipment, end of the period | (6,395) | (5,949) |
Land |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 95 | 95 |
Property, plant and equipment, end of the period | 95 | 95 |
Land | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 95 | 95 |
Additions | 0 | 2 |
Disposals | 0 | (1) |
Reclassification to held for sale (Note 4) |  | 0 |
Impairment reversals |  | 0 |
Retirement of assets | 0 | 0 |
Change in foreign exchange rates | (1) | (1) |
Transfers(2) | 1 | 0 |
Property, plant and equipment, end of the period | 95 | 95 |
Land | Accumulated depreciation and amortisation [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 0 | 0 |
Disposals | 0 | 0 |
Reclassification to held for sale (Note 4) | 0 |  |
Retirement of assets | 0 | 0 |
Change in foreign exchange rates | 0 | 0 |
Transfers(2) | 0 | 0 |
Depreciation | 0 | 0 |
Property, plant and equipment, end of the period | 0 | 0 |
Coal generation |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 2,664 | 2,811 |
Property, plant and equipment, end of the period | 2,457 | 2,664 |
Coal generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 5,876 | 6,091 |
Additions | 0 | 0 |
Disposals | 0 | 0 |
Reclassification to held for sale (Note 4) |  | 0 |
Impairment reversals |  | 0 |
Retirement of assets | (84) | (96) |
Change in foreign exchange rates | (87) | (38) |
Transfers(2) | 121 | (95) |
Property, plant and equipment, end of the period | 5,888 | 5,876 |
Coal generation | Accumulated depreciation and amortisation [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | (3,212) | (3,280) |
Disposals | 0 | 0 |
Reclassification to held for sale (Note 4) | 0 |  |
Retirement of assets | (62) | (85) |
Change in foreign exchange rates | (67) | (28) |
Transfers(2) | (3) | (239) |
Depreciation | 351 | 284 |
Property, plant and equipment, end of the period | (3,431) | (3,212) |
Gas generation |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 498 | 611 |
Property, plant and equipment, end of the period | 910 | 498 |
Gas generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 1,525 | 1,484 |
Additions | 0 | 0 |
Disposals | (16) | (3) |
Reclassification to held for sale (Note 4) |  | 0 |
Impairment reversals |  | 0 |
Retirement of assets | (3) | (3) |
Change in foreign exchange rates | 3 | (16) |
Transfers(2) | 461 | 51 |
Property, plant and equipment, end of the period | 1,982 | 1,525 |
Gas generation | Accumulated depreciation and amortisation [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | (1,027) | (873) |
Disposals | (11) | (1) |
Reclassification to held for sale (Note 4) | 0 |  |
Retirement of assets | (2) | (4) |
Change in foreign exchange rates | (1) | (10) |
Transfers(2) | (8) | 51 |
Depreciation | 67 | 118 |
Property, plant and equipment, end of the period | (1,072) | (1,027) |
Renewable generation |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 2,290 | 2,455 |
Property, plant and equipment, end of the period | 2,191 | 2,290 |
Renewable generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 3,212 | 3,265 |
Additions | 0 | 1 |
Disposals | (1) | (1) |
Reclassification to held for sale (Note 4) |  | 67 |
Impairment reversals |  | 0 |
Retirement of assets | (4) | (14) |
Change in foreign exchange rates | (23) | (10) |
Transfers(2) | 29 | 62 |
Property, plant and equipment, end of the period | 3,228 | 3,212 |
Renewable generation | Accumulated depreciation and amortisation [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | (922) | (810) |
Disposals | (1) | 0 |
Reclassification to held for sale (Note 4) | (6) |  |
Retirement of assets | (3) | (7) |
Change in foreign exchange rates | (4) | 0 |
Transfers(2) | 0 | (2) |
Depreciation | 123 | 127 |
Property, plant and equipment, end of the period | (1,037) | (922) |
Mining property and equipment |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 606 | 604 |
Property, plant and equipment, end of the period | 602 | 606 |
Mining property and equipment | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 1,265 | 1,208 |
Additions | 0 | 0 |
Disposals | (1) | (1) |
Reclassification to held for sale (Note 4) |  | 0 |
Impairment reversals |  | 0 |
Retirement of assets | (22) | (6) |
Change in foreign exchange rates | (7) | (3) |
Transfers(2) | 24 | 24 |
Property, plant and equipment, end of the period | 1,315 | 1,265 |
Mining property and equipment | Accumulated depreciation and amortisation [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | (659) | (604) |
Disposals | 0 | (1) |
Reclassification to held for sale (Note 4) | 0 |  |
Retirement of assets | (18) | (2) |
Change in foreign exchange rates | (4) | (1) |
Transfers(2) | 0 | 0 |
Depreciation | 76 | 59 |
Property, plant and equipment, end of the period | (713) | (659) |
Assets under construction |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 407 | 351 |
Property, plant and equipment, end of the period | 95 | 407 |
Assets under construction | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 407 | 351 |
Additions | 334 | 353 |
Disposals | 0 | 0 |
Reclassification to held for sale (Note 4) |  | 0 |
Impairment reversals |  | 0 |
Retirement of assets | 0 | 0 |
Change in foreign exchange rates | (2) | (13) |
Transfers(2) | (644) | (284) |
Property, plant and equipment, end of the period | 95 | 407 |
Assets under construction | Accumulated depreciation and amortisation [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 0 | 0 |
Disposals | 0 | 0 |
Reclassification to held for sale (Note 4) | 0 |  |
Retirement of assets | 0 | 0 |
Change in foreign exchange rates | 0 | 0 |
Transfers(2) | 0 | 0 |
Depreciation | 0 | 0 |
Property, plant and equipment, end of the period | 0 | 0 |
Capital spares and other |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 264 | 246 |
Property, plant and equipment, end of the period | 228 | 264 |
Capital spares and other | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | 393 | 360 |
Additions | 4 | 2 |
Disposals | (1) | (3) |
Reclassification to held for sale (Note 4) |  | 0 |
Impairment reversals |  | (1) |
Retirement of assets | (6) | (3) |
Change in foreign exchange rates | (2) | (4) |
Transfers(2) | (18) | 37 |
Property, plant and equipment, end of the period | 370 | 393 |
Capital spares and other | Accumulated depreciation and amortisation [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment, beginning of the period | (129) | (114) |
Disposals | 0 | 0 |
Reclassification to held for sale (Note 4) | 0 |  |
Retirement of assets | (5) | (3) |
Change in foreign exchange rates | 0 | 0 |
Transfers(2) | 0 | (1) |
Depreciation | 18 | 19 |
Property, plant and equipment, end of the period | (142) | (129) |
Gas equipment |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Transfers(2) |  | 14 |
Decommissioning and restoration | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Revisions and additions to decommissioning and restoration costs | 151 | 71 |
Decommissioning and restoration | Land | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Revisions and additions to decommissioning and restoration costs | 0 | 0 |
Decommissioning and restoration | Coal generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Revisions and additions to decommissioning and restoration costs | 82 | 14 |
Decommissioning and restoration | Gas generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Revisions and additions to decommissioning and restoration costs | 12 | 12 |
Decommissioning and restoration | Renewable generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Revisions and additions to decommissioning and restoration costs | 15 | 4 |
Decommissioning and restoration | Mining property and equipment | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Revisions and additions to decommissioning and restoration costs | 42 | 36 |
Decommissioning and restoration | Assets under construction | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Revisions and additions to decommissioning and restoration costs | 0 | 0 |
Decommissioning and restoration | Capital spares and other | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Revisions and additions to decommissioning and restoration costs | 0 | 5 |
Poplar Creek | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges |  | (28) |
Poplar Creek | Land | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges |  | 0 |
Poplar Creek | Coal generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges |  | 0 |
Poplar Creek | Gas generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges |  | 0 |
Poplar Creek | Renewable generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges |  | (28) |
Poplar Creek | Mining property and equipment | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges |  | 0 |
Poplar Creek | Assets under construction | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges |  | 0 |
Poplar Creek | Capital spares and other | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges |  | 0 |
Wintering Hills | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges | (20) |  |
Wintering Hills | Land | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges | 0 |  |
Wintering Hills | Coal generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges | (20) |  |
Wintering Hills | Gas generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges | 0 |  |
Wintering Hills | Renewable generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges | 0 |  |
Wintering Hills | Mining property and equipment | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges | 0 |  |
Wintering Hills | Assets under construction | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges | 0 |  |
Wintering Hills | Capital spares and other | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment charges | 0 |  |
Finance Lease | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions | 14 |  |
Finance Lease | Land | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions | 0 |  |
Finance Lease | Coal generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions | 0 |  |
Finance Lease | Gas generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions | 0 |  |
Finance Lease | Renewable generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions | 0 |  |
Finance Lease | Mining property and equipment | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions | 14 |  |
Finance Lease | Assets under construction | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions | 0 |  |
Finance Lease | Capital spares and other | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions | CAD 0 |  |
Finance lease receivables | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions |  | 7 |
Finance lease receivables | Land | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions |  | 0 |
Finance lease receivables | Coal generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions |  | 0 |
Finance lease receivables | Gas generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions |  | 0 |
Finance lease receivables | Renewable generation | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions |  | 0 |
Finance lease receivables | Mining property and equipment | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions |  | 7 |
Finance lease receivables | Assets under construction | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions |  | 0 |
Finance lease receivables | Capital spares and other | Gross carrying amount |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Additions |  | CAD 0 |

X
- Definition The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e_i&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The decrease in property, plant and equipment through classification as held for sale or inclusion in a disposal group classified as held for sale. [Refer: Disposal groups classified as held for sale [member]; Property, plant and equipment; Disposal groups classified as held for sale [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e_ii&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of depreciation of property, plant and equipment. [Refer: Depreciation and amortisation expense; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e_vii&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 75 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_75_a&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The decrease in property, plant and equipment resulting from disposals. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e_ii&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -Clause v -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e_v&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 98 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_98_a&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The increase (decrease) in property, plant and equipment resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -Clause viii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e_viii&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The increase (decrease) in property, plant and equipment resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -Clause ix -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e_ix&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The increase (decrease) in property, plant and equipment resulting from transfers. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_a&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The decrease in property, plant and equipment resulting from retirements. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e&doctype=Standard -URIDate 2017-03-09 + Details
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