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v3.20.2

Shareholders’ Equity (Details) | 12 Months Ended
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Sep. 30, 2020 vote shares
Class A common shares |
Class of Stock [Line Items] |
Number of votes for each share held | vote | 1
Class B-1 common shares |
Class of Stock [Line Items] |
Number of votes for each share held | vote | 10
Conversion ratio | 1
Membership units (in units) | 1,000,000
Class B-2 common shares |
Class of Stock [Line Items] |
Number of votes for each share held | vote | 10
Conversion ratio | 1
Class A membership units |
Class of Stock [Line Items] |
Conversion ratio | 1
Class A membership units | Class A common shares |
Class of Stock [Line Items] |
Membership units (in units) | 15,395,641
ABP Trust | Class B-2 common shares |
Class of Stock [Line Items] |
Membership units (in units) | 15,000,000
ABP Trust | Class A membership units |
Class of Stock [Line Items] |
Membership units (in units) | 15,000,000

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