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Shareholders' Equity - ASR Agreement (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended			3 Months Ended
	Jul. 31, 2024	May 31, 2024	Mar. 31, 2024	Jul. 31, 2024	Jun. 30, 2024	May 31, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased					$ 505		$ 504	$ 253	$ 252	$ 251
March 2024
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased			$ 354
Common stock repurchased (in shares)		0.2	1.7			1.9
Common stock repurchased, average price (in dollars per share)			$ 182.65
May 2024
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased		$ 505
Common stock repurchased (in shares)	0.6	1.8		2.4
Common stock repurchased, average price (in dollars per share)		$ 211.40

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern 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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