Final price paid per share for the purchase of the targeted number of shares, determined by an average market price over a fixed period of time.

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The price paid per share to immediately purchase the targeted number of shares on the date of executing the accelerated share repurchase agreement.

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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.

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- Definition

The cash outflow to reacquire common stock during the period.

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Amount of stock repurchase plan authorized.

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

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Common Stock Repurchase Program (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended			3 Months Ended		9 Months Ended
	Aug. 31, 2021	May 31, 2021	Feb. 28, 2021	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020
Accelerated Share Repurchases [Line Items]
Cash paid for repurchase of common stock						$ 1,000	$ 402
Authorized share repurchases				$ 350		$ 350
Accelerated Share Repurchase Agreement (ASR) [Member]
Accelerated Share Repurchases [Line Items]
Cash paid for repurchase of common stock	$ 500	$ 250	$ 250
Shares repurchased (in shares)	2.7	1.4	1.8	0.4	0.2
Initial stock repurchase price (in dollars per share)	$ 147.27	$ 141.42	$ 110.56
Final weighted average share purchase price (in dollars per share)				$ 140.04	$ 126.83