v2.4.0.8

Commitments and contingencies (Details) (Shareholder class action lawsuits, CAD) | 0 Months Ended | 6 Months Ended
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Jun. 06, 2013 item | May 22, 2013 item | May 07, 2013 item | Apr. 02, 2013 | Mar. 19, 2013 | Jun. 30, 2013 item
Commitments and contingencies |  |  |  |  |  |
Number of purported securities fraud class action complaints filed |  |  |  |  |  | 5
Number of notices of actions relating to Canadian securities class action claims |  |  |  |  |  | 3
Number of District Court actions alleged in specific period |  |  |  |  |  | 5
Number of investors filed motion |  |  | 6 |  |  |
Number of lead plaintiffs applicants filed oppositions |  | 3 |  |  |  |
Number of lead plaintiffs applicants filed replies | 3 |  |  |  |  |
Amount of alleged damages |  |  |  | 208,500,000 | 1,100,000,000 |
July 23, 2010 to March 4, 2013 |  |  |  |  |  |
Commitments and contingencies |  |  |  |  |  |
Number of District Court actions alleged in specific period |  |  |  |  |  | 3
August 8, 2012 to February 28, 2013 |  |  |  |  |  |
Commitments and contingencies |  |  |  |  |  |
Number of District Court actions alleged in specific period |  |  |  |  |  | 2

X
- Definition Represents the number of District Court actions alleged in the specific period. + References No definition available. + Details
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- Definition Represents the number of notices of actions relating to the specified securities class action claims, which are filed against the defendants. + References No definition available. + Details
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- Definition Represents the number of plaintiffs who filed oppositions to other plaintiffs motions. + References No definition available. + Details
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- Definition Represents the number of plaintiffs who filed replies in support of their respective motions. + References No definition available. + Details
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- Details
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- Definition The value (monetary amount) of the award the plaintiff seeks in the legal matter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14557-108349 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 11 -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 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 12 -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
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- Definition The total number of new claims filed pertaining to a loss contingency during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10, 11, 12 -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
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- Definition Number of plaintiffs that have filed claims pertaining to a loss contingency. + References No definition available. + Details
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