Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended					9 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Class of Stock [Line Items]
Purchase of treasury shares					$ 200	$ 1,000	$ 200
$500 million share repurchase program [Domain]
Class of Stock [Line Items]
Purchase of treasury shares				$ 500
$300 million share repurchase program [Member]
Class of Stock [Line Items]
Purchase of treasury shares			$ 300
$200 million share repurchase program
Class of Stock [Line Items]
Purchase of treasury shares		$ 200
Treasury Shares
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired		(4.0)			(3.7)	(19.0)	(4.0)
Treasury shares acquired, average price per share (in usd per share)					$ 54.40
Treasury Shares | $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 Shares | $300 million share repurchase program [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired		(1.3)	(4.8)
Treasury shares acquired, average price per share (in usd per share)		$ 49.39	$ 50.30
Treasury Shares | $200 million share repurchase program
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired		(3.0)
Treasury shares acquired, average price per share (in usd per share)		$ 54.01
Treasury Shares | $200 million share repurchase program | Subsequent Event
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired	(0.6)
Treasury shares acquired, average price per share (in usd per share)	$ 56.02