Shareholders' Equity (Changes in the Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period			$ 6,828
Total other comprehensive income/(loss), net of tax	$ 90	$ 35	120	$ (20)
Balance at end of period	7,538		7,538
Foreign Currency Translation Adjustments
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period			(148)
Other comprehensive income/(loss), before reclassifications			141
Amounts reclassified to earnings			(23)
Total other comprehensive income/(loss), net of tax			118
Balance at end of period	(30)		(30)
Unrealized Gain/(Loss) on Derivatives, net of tax
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period			23
Other comprehensive income/(loss), before reclassifications			2
Amounts reclassified to earnings			0
Total other comprehensive income/(loss), net of tax			2
Balance at end of period	25		25
AOCI Attributable to Parent [Member]
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period			(125)
Accumulated Other Comprehensive Loss
AOCI, Net of Tax [Roll Forward]
Other comprehensive income/(loss), before reclassifications			143
Amounts reclassified to earnings			(23)
Total other comprehensive income/(loss), net of tax			120
Balance at end of period	$ (5)		$ (5)