Dividends Declared (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Sep. 30, 2019	Sep. 30, 2018
Equity [Abstract]
Declaration Date	Sep. 18, 2019	Sep. 18, 2018
Record Date	Nov. 21, 2019	Nov. 15, 2018
Payment Date	Dec. 12, 2019	Dec. 13, 2018
Dividend Per Share	$ 0.51	$ 0.46
Amount	$ 3,893	$ 3,544

Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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Date the dividend to be paid was declared, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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