CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	AOCI Attributable to Parent [Member]
Balance, amount at Jun. 30, 2016	$ 297	$ 159	$ 868	$ 2,163	$ (2,323)	$ (570)
Balance, shares (in shares) at Jun. 30, 2016		158,741			29,386
Net earnings	701			701
Other comprehensive income (loss)	27					27
Dividends	(421)			(421)
Stock-based compensation	51		51
Other employee stock plan activities	76		9	(3)	$ 70
Other Employee Stock Plan Activities (in shares)					1,164
Treasury stock purchased	$ (189)				$ (189)
Treasury stock purchased (in shares)	(1,505)				(1,505)
Balance, shares (in shares) at Jun. 30, 2017		158,741			29,727
Balance, amount at Jun. 30, 2017	$ 542	$ 159	928	2,440	$ (2,442)	(543)
Dividends per share declared (in dollars per share)	$ 3.24
Net earnings	$ 823			823
Other comprehensive income (loss)	(4)					(4)
Dividends	(467)			(467)
Stock-based compensation	53		53
Other employee stock plan activities	51		(6)	1	$ 56
Other Employee Stock Plan Activities (in shares)					1,139
Treasury stock purchased	$ (272)				$ (272)
Treasury stock purchased (in shares)	(2,171)				(2,171)
Balance, shares (in shares) at Jun. 30, 2018		158,741			30,759
Balance, amount at Jun. 30, 2018	$ 726	$ 159	975	2,797	$ (2,658)	(547)
Dividends per share declared (in dollars per share)	$ 3.60
Net earnings	$ 820			820
Other comprehensive income (loss)	(16)					(16)
Dividends	(503)			(503)
Stock-based compensation	43		43
Other employee stock plan activities	152		28	0	$ 124
Other Employee Stock Plan Activities (in shares)					2,178
Treasury stock purchased	$ (660)				$ (660)
Treasury stock purchased (in shares)	(4,474)				(4,474)
Balance, shares (in shares) at Jun. 30, 2019		158,741			33,055
Balance, amount at Jun. 30, 2019	$ 559	$ 159	$ 1,046	$ 3,150	$ (3,194)	$ (602)
Dividends per share declared (in dollars per share)	$ 3.94