Shareholders' Equity (Schedule of the changes in the balance in accumulated other comprehensive income by component and in total) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Equity [Abstract]
Tax on other comprehensive income/(loss)	$ 7	$ 5
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income/(loss) at beginning of period	70	68
Other comprehensive income/(loss), net of tax before reclassifications	(95)	(1)
Amounts reclassified to earnings	2	3
Other comprehensive income/(loss), foreign currency translation adjustments net of tax	(104)	9	$ 18
Other comprehensive (loss)/income, unrealized gain/(loss) on derivatives, net of tax	11	(7)	13
Other comprehensive income/(loss), net of tax	(93)	2	31
Accumulated other comprehensive income/(loss) at end of period	(23)	70	68
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income/(loss) at beginning of period	63	54
Other comprehensive income/(loss), net of tax before reclassifications	(104)	9
Amounts reclassified to earnings	0	0
Other comprehensive income/(loss), foreign currency translation adjustments net of tax	(104)	9
Accumulated other comprehensive income/(loss) at end of period	(41)	63	54
Unrealized Gain/(Loss) on Derivatives, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income/(loss) at beginning of period	7	14
Other comprehensive income/(loss), net of tax before reclassifications	9	(10)
Amounts reclassified to earnings	2	3
Other comprehensive (loss)/income, unrealized gain/(loss) on derivatives, net of tax	11	(7)
Accumulated other comprehensive income/(loss) at end of period	$ 18	$ 7	$ 14