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		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
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			(74)
Amounts reclassified to earnings			0
Other comprehensive loss, unrealized gain/(loss) on derivatives, net of tax	$ (1)	$ (9)	(1)	$ (9)
Total other comprehensive loss, net of tax			(74)
Accumulated other comprehensive loss at end of period	(97)		(97)
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			(73)
Amounts reclassified to earnings			0
Other comprehensive loss, foreign currency translation adjustments net of tax			(73)
Accumulated other comprehensive loss at end of period	(114)		(114)
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			(1)
Amounts reclassified to earnings			0
Other comprehensive loss, unrealized gain/(loss) on derivatives, net of tax			(1)
Accumulated other comprehensive loss at end of period	$ 17		$ 17