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Revenue - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Disclosure of reportable segments [line items]
Revenue from contracts with customers	$ 44,361	$ 42,748	$ 35,036
Other revenue	$ (73)	$ 381	$ 704
Bottom of range [member]
Disclosure of reportable segments [line items]
Provisional pricing period	60 days
Top of range [member]
Disclosure of reportable segments [line items]
Provisional pricing period	120 days

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- Definition

Provisional pricing period.

+ References

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- Definition

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

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- Definition

The amount of revenue arising from sources that the entity does not separately disclose in the same statement or note. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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