Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Shares	Retained Earnings	Treasury Shares	Accumulated Other Comprehensive Income/(Loss)	Noncontrolling Interests
Net Income (Loss) Attributable to Parent	$ 1,288		$ 1,288
Balance at beginning of period (in shares) at Jun. 30, 2016		364.0
Balance at beginning of period at Jun. 30, 2016	6,571	$ 3,010	6,419		$ (116)	$ 17
Treasury, balance at beginning of period (in shares) at Jun. 30, 2016				(42.0)
Treasury, balance at beginning of period at Jun. 30, 2016				$ (2,759)
Increase (Decrease) in Shareholders' Equity
Net earnings	1,294					2
Net Earnings Including Portion Attributable to Noncontrolling Interest Excluding Redeemable Noncontrolling Interest	1,290
Other Comprehensive Income (Loss), Net of Tax	(9)
Other comprehensive income/(loss), net of tax	(9)				(9)
Purchase of noncontrolling interests	(1)					(1)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	(156)	$ (11)		$ (167)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture				2.0
Treasury shares acquired (in shares)				(8.1)
Treasury shares acquired	(600)			$ (600)
Dividends declared	(580)		(580)
Other	1		(1)			2
Retirement of Treasury Shares (in shares)		37.0		37.0
Retirement of Treasury Shares	0	$ 302	2,159	$ 2,461
Balance at end of period (in shares) at Jun. 30, 2017		327.0
Balance at end of period at Jun. 30, 2017	6,828	$ 2,697	4,967		(125)	20
Treasury, balance at end of period (in shares) at Jun. 30, 2017				(11.0)
Treasury, balance at end of period at Jun. 30, 2017				$ (731)
Balance at beginning of period (in shares) at Jun. 30, 2016		364.0
Balance at beginning of period at Jun. 30, 2016	$ 6,571	$ 3,010	6,419		(116)	17
Treasury, balance at beginning of period (in shares) at Jun. 30, 2016				(42.0)
Treasury, balance at beginning of period at Jun. 30, 2016				$ (2,759)
Increase (Decrease) in Shareholders' Equity
Treasury shares acquired				$ (1,800)
Balance at end of period (in shares) at Jun. 30, 2019	327.0	327.0
Balance at end of period at Jun. 30, 2019	$ 6,330	$ 2,763	5,434		(79)	2
Treasury, balance at end of period (in shares) at Jun. 30, 2019	(28.0)			28.0
Treasury, balance at end of period at Jun. 30, 2019	$ (1,790)			$ 1,790
Net Income (Loss) Attributable to Parent	256		256
Balance at beginning of period (in shares) at Jun. 30, 2017		327.0
Balance at beginning of period at Jun. 30, 2017	6,828	$ 2,697	4,967		(125)	20
Treasury, balance at beginning of period (in shares) at Jun. 30, 2017				(11.0)
Treasury, balance at beginning of period at Jun. 30, 2017				$ (731)
Increase (Decrease) in Shareholders' Equity
Net earnings	259					(1)
Net Earnings Including Portion Attributable to Noncontrolling Interest Excluding Redeemable Noncontrolling Interest	255
Other Comprehensive Income (Loss), Net of Tax	33
Other comprehensive income/(loss), net of tax	33				33
Purchase of noncontrolling interests	(19)					(19)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	(90)	$ (33)		$ (57)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture				1.0
Treasury shares acquired (in shares)				(8.4)
Treasury shares acquired	(550)			$ (550)
Dividends declared	(584)		(584)
Other	$ (6)		6
Balance at end of period (in shares) at Jun. 30, 2018	327.0	327.0
Balance at end of period at Jun. 30, 2018	$ 6,059	$ 2,730	4,645		(92)	0
Treasury, balance at end of period (in shares) at Jun. 30, 2018	(18.0)			(18.0)
Treasury, balance at end of period at Jun. 30, 2018	$ (1,224)			$ (1,224)
Net Income (Loss) Attributable to Parent	1,363
Increase (Decrease) in Shareholders' Equity
Net earnings	1,365					2
Net Earnings Including Portion Attributable to Noncontrolling Interest Excluding Redeemable Noncontrolling Interest	1,365
Other Comprehensive Income (Loss), Net of Tax	13
Other comprehensive income/(loss), net of tax	13				13
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	(67)	$ (33)		$ (34)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture				1.0
Treasury shares acquired (in shares)				(11.5)
Treasury shares acquired	(600)			$ (600)
Dividends declared	(575)		(575)
Other	$ (1)		(1)
Balance at end of period (in shares) at Jun. 30, 2019	327.0	327.0
Balance at end of period at Jun. 30, 2019	$ 6,330	$ 2,763	$ 5,434		$ (79)	$ 2
Treasury, balance at end of period (in shares) at Jun. 30, 2019	(28.0)			28.0
Treasury, balance at end of period at Jun. 30, 2019	$ (1,790)			$ 1,790