Shareholders' Equity (Schedule of the changes in the balance in accumulated other comprehensive loss by component and in total) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive loss at beginning of period			$ (23)
Other comprehensive loss, net of tax before reclassifications			(61)
Amounts reclassified to earnings			0
Other comprehensive loss, unrealized gain/(loss) on derivatives, net of tax	$ (3)	$ 2	(4)	$ (6)
Total other comprehensive loss, net of tax			(61)
Accumulated other comprehensive loss at end of period	(84)		(84)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive loss at beginning of period			(41)
Other comprehensive loss, net of tax before reclassifications			(57)
Amounts reclassified to earnings			0
Other comprehensive loss, foreign currency translation adjustments net of tax			(57)
Accumulated other comprehensive loss at end of period	(98)		(98)
Unrealized Gain/(Loss) on Derivatives, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive loss at beginning of period			18
Other comprehensive loss, net of tax before reclassifications			(4)
Amounts reclassified to earnings			0
Other comprehensive loss, unrealized gain/(loss) on derivatives, net of tax			(4)
Accumulated other comprehensive loss at end of period	$ 14		$ 14