Condensed Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income/(Loss)	Noncontrolling Interest
Net Income (Loss) Attributable to Parent	$ 1,422		$ 1,422
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 Stockholders' Equity [Roll Forward]
Net earnings	1,425
Net Earnings Including Portion Attributable to Noncontrolling Interest Excluding Redeemable Noncontrolling Interest	1,422
Other Comprehensive Income (Loss), Net of Tax	120				120
Other Comprehensive Income (Loss), Net of Tax	120
Purchase from noncontrolling interests	(19)					(19)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures				1.0
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	68	$ 13		$ 55
Treasury shares acquired (in shares)				(6.5)
Treasury shares acquired	(450)			$ (450)
Dividends declared	(436)		(436)
Other	5		5
Balance at end of period (in shares) at Mar. 31, 2018		327.0
Balance at end of period at Mar. 31, 2018	7,538	$ 2,710	5,958		(5)	1
Treasury, balance at end of period (in shares) at Mar. 31, 2018				(16.0)
Treasury, balance at end of period at Mar. 31, 2018				$ (1,126)
Net Income (Loss) Attributable to Parent	255		255
Balance at beginning of period (in shares) at Dec. 31, 2017		327.0
Balance at beginning of period at Dec. 31, 2017	7,619	$ 2,694	5,848		(95)	20
Treasury, balance at beginning of period (in shares) at Dec. 31, 2017				(12.0)
Treasury, balance at beginning of period at Dec. 31, 2017				$ (848)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	255
Net Earnings Including Portion Attributable to Noncontrolling Interest Excluding Redeemable Noncontrolling Interest	255
Other Comprehensive Income (Loss), Net of Tax	90				90
Other Comprehensive Income (Loss), Net of Tax	90
Purchase from noncontrolling interests	(19)					(19)
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	38	$ 16		$ 22
Treasury shares acquired (in shares)				(4.0)
Treasury shares acquired	(300)			$ (300)
Dividends declared	(144)		(144)
Other	(1)		(1)
Balance at end of period (in shares) at Mar. 31, 2018		327.0
Balance at end of period at Mar. 31, 2018	7,538	$ 2,710	5,958		(5)	1
Treasury, balance at end of period (in shares) at Mar. 31, 2018				(16.0)
Treasury, balance at end of period at Mar. 31, 2018				$ (1,126)
Net Income (Loss) Attributable to Parent	$ 1,169		1,169
Balance at beginning of period (in shares) at Jun. 30, 2018	327.0	327.0
Balance at beginning of period at Jun. 30, 2018	$ 6,059	$ 2,730	4,645		(92)	0
Treasury, balance at beginning of period (in shares) at Jun. 30, 2018	(18.0)			(18.0)
Treasury, balance at beginning of period at Jun. 30, 2018	$ (1,224)			$ (1,224)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	1,170					1
Net Earnings Including Portion Attributable to Noncontrolling Interest Excluding Redeemable Noncontrolling Interest	1,170
Other Comprehensive Income (Loss), Net of Tax	(19)				(19)
Other Comprehensive Income (Loss), Net of Tax	(19)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures				1.0
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	49	$ 18		$ 31
Treasury shares acquired (in shares)				(11.5)
Treasury shares acquired	(600)			$ (600)
Dividends declared	(429)		(429)
Other	$ 2		1			1
Balance at end of period (in shares) at Mar. 31, 2019	327.0	327.0
Balance at end of period at Mar. 31, 2019	$ 6,232	$ 2,748	5,386		(111)	2
Treasury, balance at end of period (in shares) at Mar. 31, 2019	(29.0)			(29.0)
Treasury, balance at end of period at Mar. 31, 2019	$ (1,793)			$ (1,793)
Net Income (Loss) Attributable to Parent	296
Balance at beginning of period (in shares) at Dec. 31, 2018		327.0
Balance at beginning of period at Dec. 31, 2018	6,043	$ 2,728	5,233		(123)	0
Treasury, balance at beginning of period (in shares) at Dec. 31, 2018				(29.0)
Treasury, balance at beginning of period at Dec. 31, 2018				$ (1,795)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	296
Net Earnings Including Portion Attributable to Noncontrolling Interest Excluding Redeemable Noncontrolling Interest	296
Other Comprehensive Income (Loss), Net of Tax					12
Other Comprehensive Income (Loss), Net of Tax	12
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	22	$ 20		$ 2
Dividends declared	(143)		(143)
Other	$ 2					2
Balance at end of period (in shares) at Mar. 31, 2019	327.0	327.0
Balance at end of period at Mar. 31, 2019	$ 6,232	$ 2,748	$ 5,386		$ (111)	$ 2
Treasury, balance at end of period (in shares) at Mar. 31, 2019	(29.0)			(29.0)
Treasury, balance at end of period at Mar. 31, 2019	$ (1,793)			$ (1,793)