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Derivatives and Risk Management Activities (Details 3) In Millions, unless otherwise specified | Sep. 30, 2014 Forward exchange contracts that exchange CAD for USD at the Rate USD 1.00 to CAD 1.12 Maturing in 2014 USD ($) | Sep. 30, 2014 Forward exchange contracts that exchange CAD for USD at the Rate USD 1.00 to CAD 1.12 Maturing in 2014 CAD | Sep. 30, 2014 Forward exchange contracts that exchange CAD for USD at the Rate USD 1.00 to CAD 1.12 Maturing in 2015 USD ($) | Sep. 30, 2014 Forward exchange contracts that exchange CAD for USD at the Rate USD 1.00 to CAD 1.12 Maturing in 2015 CAD | Sep. 30, 2014 Forward exchange contracts that exchange CAD for USD at the Rate USD 1.00 to CAD 1.12 USD ($) | Sep. 30, 2014 Forward exchange contracts that exchange CAD for USD at the Rate USD 1.00 to CAD 1.12 CAD | Sep. 30, 2014 Forward exchange contracts that exchange USD for CAD at the Rate USD 1.00 to CAD 1.10 Maturing in 2014 USD ($) | Sep. 30, 2014 Forward exchange contracts that exchange USD for CAD at the Rate USD 1.00 to CAD 1.10 Maturing in 2014 CAD | Sep. 30, 2014 Forward exchange contracts that exchange USD for CAD at the Rate USD 1.00 to CAD 1.09 Maturing in 2015 USD ($) | Sep. 30, 2014 Forward exchange contracts that exchange USD for CAD at the Rate USD 1.00 to CAD 1.09 Maturing in 2015 CAD | Sep. 30, 2014 Forward exchange contracts that exchange USD for CAD at the Rate USD 1.00 to CAD 1.10 USD ($) | Sep. 30, 2014 Forward exchange contracts that exchange USD for CAD at the Rate USD 1.00 to CAD 1.10 CAD
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Currency Exchange Rate Risk Hedging: |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of derivatives | $ 284 | 319 | $ 178 | 200 | $ 462 | 519 | $ 284 | 313 | $ 178 | 195 | $ 462 | 508
Average exchange rate |  | 1.12 |  | 1.12 |  | 1.12 |  | 1.10 |  | 1.09 |  | 1.10

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Average contractual rate at which a foreign currency can be purchased or sold. + References No definition available. + Details
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- Details
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