Variable Interest Entities (Details) - USD ($) $ in Millions	Mar. 31, 2020	Mar. 31, 2019
Variable Interest Entity [Line Items]
VIE consolidated assets	$ 61,247	$ 59,672
Unconsolidated VIE maximum exposure to loss	1,400	1,100
Consolidated Variable Interest Entities
Variable Interest Entity [Line Items]
VIE consolidated assets	695	896
VIE consolidated liabilities	$ 82	$ 64

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

+ References

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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.

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