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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Share Repurchases (Detail) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
Share Repurchases (Detail) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Mar. 31, 2023	Mar. 31, 2022
Share Repurchase Program 2021
Share Repurchases [Line Items]
Shares of common stock repurchased	18,000,000	20,000,000	17,000,000	26,000,000			55,000,000
Value of common stock repurchased	$ 4,600	$ 4,600	$ 4,600	$ 7,800			$ 13,800
Share Repurchase Program 2019
Share Repurchases [Line Items]
Shares of common stock repurchased						21,000,000
Value of common stock repurchased						$ 6,200
Share Repurchase Program 2019 and 2021
Share Repurchases [Line Items]
Shares of common stock repurchased					20,000,000			67,000,000
Value of common stock repurchased					$ 6,233			$ 20,233