Cover [Abstract] Document Information [Table] Document Information [Table] Classes of share capital [axis] Classes of share capital [axis] Classes of share capital Classes of share capital [domain] Class A common shares [Member] Class A common shares [Member] Class A common shares Class B common shares [Member] Class B common shares [Member] Class B common shares Entity Addresses, Address Type [Axis] Entity Addresses, Address Type [Axis] Address Type [Domain] Address Type [Domain] Business Contact Business Contact [Member] Document Information [Line Items] Document Information [Line Items] Document Type Document Type Document Period End Date Document Period End Date Current Fiscal Year End Date Current Fiscal Year End Date Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Contact Personnel Name Contact Personnel Name Country Region Country Region City Area Code City Area Code Local Phone Number Local Phone Number Contact Personnel Email Address Contact Personnel Email Address Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Address, Country Entity Address, Country Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Document Transition Report Document Transition Report Document Shell Company Report Document Shell Company Report Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Document Registration Statement Document Registration Statement Entity Filer Category Entity Filer Category Entity Emerging Growth Company Entity Emerging Growth Company ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] Document Accounting Standard Document Accounting Standard Entity Shell Company Entity Shell Company Document Annual Report Document Annual Report Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Central Index Key Entity Central Index Key Amendment Description