Shareholders' Equity (Changes in the Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Tax	$ (4)	$ (1)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	6,059	6,828	$ 6,571
Amounts reclassified to earnings	0	(23)	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	13	33	(9)
Balance at end of period	6,330	6,059	6,828
Foreign Currency Translation Adjustments and other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(113)	(148)
Other comprehensive income/(loss), net before reclassifications	18	58
Amounts reclassified to earnings	0	(23)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	18	35
Balance at end of period	(95)	(113)	(148)
Unrealized Gain/(Loss) on Derivatives, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	21	23
Other comprehensive income/(loss), net before reclassifications	0	0
Amounts reclassified to earnings	(5)	(2)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(5)	(2)
Balance at end of period	16	21	23
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(92)
Balance at end of period	(79)	(92)
Accumulated Other Comprehensive Income/(Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(92)	(125)	(116)
Other comprehensive income/(loss), net before reclassifications	18	58
Amounts reclassified to earnings	(5)	(25)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	13	33	(9)
Balance at end of period	$ (79)	$ (92)	$ (125)