Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Share Repurchases (Detail) - USD ($) shares in Millions, $ in Millions	3 Months Ended												12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Share Repurchases [Line Items]
Shares of common stock repurchased													150	99	170
Share Repurchase Program 2016
Share Repurchases [Line Items]
Shares of common stock repurchased	33	36	57	24	21	34	22	22	23	25	59	63	150	99	170
Value of common stock repurchased	$ 4,200	$ 3,899	$ 6,100	$ 2,600	$ 2,100	$ 3,100	$ 1,800	$ 1,600	$ 1,600	$ 1,600	$ 3,533	$ 3,550	$ 16,799	$ 8,600	$ 10,283