XML 120 R91.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Supplemental Cash Flow Information - Reconciliation of movements of liabilities to cash flows (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 CAD ($)
Short-Term Debt |
Reconciliation of movements of liabilities to cash flows arising from financing activities |
Liabilities arising from financing activities at beginning of period | $ 2,136
Changes from financing cash flows: |
Net issuance of commercial paper | 866
Realized foreign exchange losses | 131
Unrealized foreign exchange losses | 98
Liabilities arising from financing activities at end of period | 3,231
Current Portion Of Long-Term Debt |
Reconciliation of movements of liabilities to cash flows arising from financing activities |
Liabilities arising from financing activities at beginning of period | 71
Changes from financing cash flows: |
Repayment of long-term debt | (109)
Realized foreign exchange losses | 1
Unrealized foreign exchange losses | 9
Reclassification from long-term debt to current portion of long-term debt | 257
Liabilities arising from financing activities at end of period | 229
Long-Term Debt |
Reconciliation of movements of liabilities to cash flows arising from financing activities |
Liabilities arising from financing activities at beginning of period | 13,372
Changes from financing cash flows: |
Payment of finance lease liabilities | (74)
Unrealized foreign exchange losses | 851
Deferred financing costs | (14)
Modification to finance lease liabilities | 12
Reclassification from long-term debt to current portion of long-term debt | (257)
Liabilities arising from financing activities at end of period | 13,890
Partnership Liability |
Reconciliation of movements of liabilities to cash flows arising from financing activities |
Liabilities arising from financing activities at beginning of period | 483
Changes from financing cash flows: |
Distributions to non-controlling interest | (6)
Liabilities arising from financing activities at end of period | 477
Dividends Payable |
Changes from financing cash flows: |
Dividends paid on common shares | (2,333)
Dividends declared on common shares | $ 2,333

X
- References No definition available. + Details
Name: | ifrs-full_ChangesInLiabilitiesArisingFromFinancingActivitiesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase (decrease) in liabilities arising from financing activities resulting from the effect of changes in foreign exchange rates. [Refer: Liabilities arising from financing activities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2018-01-01 -Paragraph 44B -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2018-03-01&anchor=para_44B_c&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_IncreaseDecreaseThroughEffectOfChangesInForeignExchangeRatesLiabilitiesArisingFromFinancingActivities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of liabilities for which cash flows were, or future cash flows will be, classified in the statement of cash flows as cash flows from financing activities. [Refer: Cash flows from (used in) financing activities; Liabilities] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2018-01-01 -Paragraph 44D -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2018-03-01&anchor=para_44D&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_LiabilitiesArisingFromFinancingActivities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The decrease in liabilities arising from financing activities resulting from payment of dividends on common stock. + References No definition available. + Details
Name: | su_DecreaseThroughDividendsOnCommonSharesLiabilitiesArisingFromFinancingActivities
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The decrease in liabilities arising from financing activities resulting from distributions to non-controlling interest. + References No definition available. + Details
Name: | su_DecreaseThroughEffectOfDistributionsToNonControllingInterestLiabilitiesArisingFromFinancingActivities
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The decrease in liabilities arising from financing activities resulting from payment of finance lease. + References No definition available. + Details
Name: | su_DecreaseThroughFinanceLeasesPaymentsLiabilitiesArisingFromFinancingActivities
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The decrease in liabilities arising from financing activities resulting from repayment of long-term debt. + References No definition available. + Details
Name: | su_DecreaseThroughRepaymentOfLongTermDebtLiabilitiesArisingFromFinancingActivities
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) in liabilities arising from financing activities resulting from the effect of changes in realized foreign exchange rates. + References No definition available. + Details
Name: | su_IncreaseDecreaseThroughEffectOfChangesInRealizedForeignExchangeRatesLiabilitiesArisingFromFinancingActivities
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) in liabilities arising from financing activities resulting from declaration of dividend. + References No definition available. + Details
Name: | su_IncreaseDecreaseThroughEffectOfDividendLiabilitiesArisingFromFinancingActivities
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) in liabilities arising from financing activities resulting from net issuance and repayment of commercial papers supported by revolving credit facility. + References No definition available. + Details
Name: | su_IncreaseDecreaseThroughNetIssuanceRepaymentOfCommercialPaperLiabilitiesArisingFromFinancingActivities
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) in liabilities arising from financing activities resulting from reclassification of long-term debt to current portion of long-term debt. + References No definition available. + Details
Name: | su_IncreaseDecreaseThroughReclassificationFromLongTermDebtToCurrentPortionOfLongTermDebtLiabilitiesArisingFromFinancingActivities
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase in liabilities arising from financing activities resulting from deferred financing cost. + References No definition available. + Details
Name: | su_IncreaseThroughDeferredFinanceCostLiabilitiesArisingFromFinancingActivities
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of noncash changes related to new finance lease liabilities. + References No definition available. + Details
Name: | su_NoncashChangesNewFinanceLeaseLiabilities
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis=ifrs-full_ShorttermBorrowingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis=su_CurrentPortionOfLongTermBorrowingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis=ifrs-full_LongtermBorrowingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis=su_PartnershipLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis=su_DividendsPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |