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BRW Term Loan (Details) - BRW - Term Loan Receivable shares in Millions, adr in Millions | Jan. 01, 2020 USD ($) | Nov. 30, 2018 USD ($) adr shares
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan amount |  | $ 456,000,000
Number of shares pledged as collateral (in shares) | shares |  | 516
Implied value equivalent of shares pledged as collateral (in ADRs) | adr |  | 64.5
Carrying amount of loan receivable | $ 515,000,000 |

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