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Share Capital - Preferred Shares Issued and Outstanding (Details) - shares shares in Millions | Jun. 30, 2020 | Dec. 31, 2020 | May 31, 2020
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Preferred shares |  |  |
Reconciliation of number of shares outstanding [abstract] |  |  |
Number of shares |  | 92.2 |
Series 8R |  |  |
Reconciliation of number of shares outstanding [abstract] |  |  |
Number of shares converted (in shares) | 0.1 |  |
Number of shares | 6.2 | 6.2 | 5.2
Series 9QR |  |  |
Reconciliation of number of shares outstanding [abstract] |  |  |
Number of shares converted (in shares) | 1.1 |  |
Number of shares | 5.0 | 5.0 | 6.0

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- Definition The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_79_a_iv&doctype=Standard -URIDate 2019-03-27 + Details
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- References No definition available. + Details
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- Definition Increase (Decrease) In Number Of Shares Outstanding Through Conversion Of Convertible Instruments, Equity + References No definition available. + Details
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- Details
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- Details
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- Details
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