Allowance for Doubtful Accounts (Detail) - Allowance for doubtful accounts $ in Millions	6 Months Ended
Dec. 31, 2017 USD ($)
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance, beginning of period	$ 361
Charged to costs and other	45
Write-offs	(53)
Balance, end of period	353
Accounts receivable, net of allowance for doubtful accounts
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance, end of period	337
Other Long-term Assets
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance, end of period	$ 16

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to costs and expenses, as well as other adjustments to the reserves that are not charged to costs and expenses.

No definition available.

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- Definition

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

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- Definition

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.

+ References

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