XML 80 R94.htm IDEA: XBRL DOCUMENT
v2.4.0.6

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES (Details 7) (CAD) In Millions, unless otherwise specified |  |  |  |  |  | 12 Months Ended |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012 Level 3 | Dec. 31, 2011 Level 3 | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Financial Natural gas | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Financial Natural gas Minimum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Financial Natural gas Maximum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Financial Natural gas Weighted average price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Financial Crude oil | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Financial Crude oil Minimum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Financial Crude oil Maximum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Financial Crude oil Weighted average price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Financial Power | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Financial Power Minimum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Financial Power Maximum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Financial Power Weighted average price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical Natural gas | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical Natural gas Minimum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical Natural gas Maximum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical Natural gas Weighted average price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical Crude oil | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical Crude oil Minimum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical Crude oil Maximum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical Crude oil Weighted average price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical NGL | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical NGL Minimum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical NGL Maximum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical NGL Weighted average price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical Power | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical Power Minimum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical Power Maximum price | Dec. 31, 2012 Market approach valuation technique Level 3 Commodity Contracts - Physical Power Weighted average price | Dec. 31, 2012 Option model valuation technique Level 3 Commodity Options Natural gas | Dec. 31, 2012 Option model valuation technique Level 3 Commodity Options Natural gas Minimum price | Dec. 31, 2012 Option model valuation technique Level 3 Commodity Options Natural gas Maximum price | Dec. 31, 2012 Option model valuation technique Level 3 Commodity Options Natural gas Weighted average price | Dec. 31, 2012 Option model valuation technique Level 3 Commodity Options NGL | Dec. 31, 2012 Option model valuation technique Level 3 Commodity Options NGL Minimum price | Dec. 31, 2012 Option model valuation technique Level 3 Commodity Options NGL Maximum price | Dec. 31, 2012 Option model valuation technique Level 3 Commodity Options NGL Weighted average price
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value | (1,047) | (389) | (24) | 32 | 8 |  |  |  | (3) |  |  |  | (60) |  |  |  | (12) |  |  |  | 37 |  |  |  | 1 |  |  |  | (1) |  |  |  | 1 |  |  |  | 5 |  |  |
Forward price |  |  |  |  |  | 3.21 | 4.31 | 3.54 |  | 58.42 | 108.14 | 100.40 |  | 50.25 | 68.25 | 55.98 |  | 2.88 | 5.10 | 3.67 |  | 51.13 | 116.56 | 92.49 |  | 0.00 | 2.54 | 1.42 |  | 30.09 | 36.35 | 32.74 |  |  |  |  |  |  |  |
Option Volatility (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 29.00% | 36.00% | 34.00% |  | 33.00% | 104.00% | 57.00%

X
- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given commodity price. + References No definition available. + Details
Name: | enb_FairValueAssumptionsCommodityExpectedVolatilityRate
Namespace Prefix: | enb_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The forward price on the price risk forward or futures contract, such as a gas futures contract, used as an input to measure fair value. + References No definition available. + Details
Name: | enb_FairValueInputsDerivativeForwardPrice
Namespace Prefix: | enb_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 4, 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueInputsAssetsQuantitativeInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration