XML 101 R80.htm IDEA: XBRL DOCUMENT v2.4.1.9

Inventories of Crude Oil and Products (Detail) (CAD) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Product Information [Line Items]
Crude oil	650us-gaap_EnergyRelatedInventoryPetroleum	628us-gaap_EnergyRelatedInventoryPetroleum
Petroleum products	409imo_PetroleumProductsInventory	340imo_PetroleumProductsInventory
Chemical products	53us-gaap_EnergyRelatedInventoryChemicals	54us-gaap_EnergyRelatedInventoryChemicals
Natural gas and other	9imo_NaturalGasAndOtherProductsInventory	8imo_NaturalGasAndOtherProductsInventory
Total inventories of crude oil and products	1,121us-gaap_InventoryFinishedGoodsAndWorkInProcess	1,030us-gaap_InventoryFinishedGoodsAndWorkInProcess

X

- Definition

Carrying value of natural gas and other products.

+ References

No definition available.

+ Details

Name:	imo_NaturalGasAndOtherProductsInventory
Namespace Prefix:	imo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Carrying value of petroleum products.

+ References

No definition available.

+ Details

Name:	imo_PetroleumProductsInventory
Namespace Prefix:	imo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Carrying amount as of the balance sheet date of solvents or substances produced by or used in a process to change the shape, form or composition of some related matter.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5

+ Details

Name:	us-gaap_EnergyRelatedInventoryChemicals
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Carrying amount as of the balance sheet date of petroleum or crude oil.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5

+ Details

Name:	us-gaap_EnergyRelatedInventoryPetroleum
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount before valuation reserves of merchandise or goods held by the entity that are readily available for sale and items held by the entity which are partially complete or in the process of being readied for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a)(1),(3))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration