Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions							2 Months Ended	3 Months Ended								4 Months Ended		6 Months Ended	9 Months Ended
	Feb. 28, 2023	Jan. 13, 2023	Dec. 23, 2022	Apr. 18, 2022	Jan. 31, 2022	Oct. 04, 2021	Feb. 28, 2023	Mar. 31, 2023	Jan. 13, 2023	Dec. 31, 2022	Sep. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Oct. 14, 2021	Sep. 30, 2021	Apr. 18, 2022	Jan. 31, 2022	Dec. 23, 2022	Mar. 31, 2023	Mar. 31, 2022
Class of Stock [Line Items]
Purchase of treasury shares																			$ 1,500	$ 1,000
$250 million share repurchase program [Member]
Class of Stock [Line Items]
Purchase of treasury shares										$ 250
$1 billion share repurchase program
Class of Stock [Line Items]
Purchase of treasury shares											$ 1,000
$300 million share repurchase program
Class of Stock [Line Items]
Purchase of treasury shares													$ 300
$500 million share repurchase program [Domain]
Class of Stock [Line Items]
Purchase of treasury shares															$ 500
$200 million
Class of Stock [Line Items]
Purchase of treasury shares												$ 200
Treasury Stock, Common
Class of Stock [Line Items]
Purchase of treasury shares																			$ 1,500	$ 1,000
Treasury Stock, Shares, Acquired								(4.0)				(4.0)							(20.0)	(19.0)
Treasury Stock, Common | $250 million share repurchase program [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired	(0.6)	(0.6)								(2.6)									(2.6)
Treasury shares acquired, average price per share (in usd per share)							$ 77.27		$ 77.50	$ 76.58									$ 77.03
Treasury Stock, Common | $1 billion share repurchase program
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired			(1.6)								(12.0)
Treasury shares acquired, average price per share (in usd per share)											$ 66.74							$ 73.36
Treasury Stock, Common | $300 million share repurchase program
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired					(1.3)								(4.8)
Treasury shares acquired, average price per share (in usd per share)													$ 50.30				$ 49.39
Treasury Stock, Common | $500 million share repurchase program [Domain]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired						(2.0)									(7.8)
Treasury shares acquired, average price per share (in usd per share)														$ 51.10	$ 51.53
Treasury Stock, Common | $200 million
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired				(0.6)								(3.0)
Treasury shares acquired, average price per share (in usd per share)												$ 54.01				$ 56.02