Shareholders' Equity (Schedule of the changes in the balance in AOCI by component and in total) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Rollforward]
Balance at June 30, 2013	$ 68
Other comprehensive income, before reclassifications	25
Amounts reclassified to earnings	(1)
Other Comprehensive Income, Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	24	25
Other Comprehensive Income, Derivatives Qualifying as Hedges, Net of Tax	0	(1)
Total other comprehensive income, net of tax	24	24
Balance at September 30, 2013	92
Foreign Currency Translation Adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Rollforward]
Balance at June 30, 2013	54
Other comprehensive income, before reclassifications	24
Amounts reclassified to earnings	0
Other Comprehensive Income, Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	24
Balance at September 30, 2013	78
Unrealized Gain/(Loss) on Derivatives, net of tax
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Rollforward]
Balance at June 30, 2013	14
Other comprehensive income, before reclassifications	1
Amounts reclassified to earnings	(1)
Other Comprehensive Income, Derivatives Qualifying as Hedges, Net of Tax	0
Balance at September 30, 2013	$ 14