Summary of Significant Accounting Policies Variable Interest Entities, Additional Information (Details)	Sep. 30, 2020
Variable Interest Entity [Line Items]
Interest Percentage Minimum For Investments In Partially Owned Affiliates To Be Accounted For By Equity Method	20.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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