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Consolidated Balance Sheet (U.S. GAAP) (Parenthetical) (CAD) In Millions, except Share data in Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Due to related parties, current | 75 us-gaap_DueToRelatedPartiesCurrent | 75 us-gaap_DueToRelatedPartiesCurrent
Amounts (payable) receivable from related parties | (174)us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent | (170)us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent
Common shares outstanding | 847,599 us-gaap_CommonStockSharesOutstanding | 847,599 us-gaap_CommonStockSharesOutstanding
Long-term debt |  |
Due to related parties | 4,746 us-gaap_DueToRelatedPartiesNoncurrent / us-gaap_BalanceSheetLocationAxis = imo_NoncurrentLiabilitiesMember | 4,316 us-gaap_DueToRelatedPartiesNoncurrent / us-gaap_BalanceSheetLocationAxis = imo_NoncurrentLiabilitiesMember
Other long-term debt |  |
Due to related parties | 96 us-gaap_DueToRelatedPartiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |

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