Shareholders' Equity (Changes in the Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	$ 1,792	$ 6,330
Total other comprehensive income/(loss), net of tax	17	(22)
Balance at end of period	1,425	903
Foreign Currency Translation Adjustments
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	(92)
Other comprehensive income, before reclassifications	12
Amounts reclassified to earnings	0
Total other comprehensive income/(loss), net of tax	12
Balance at end of period	(80)
Unrealized Gain/(Loss) on Derivatives, net of tax
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	(12)
Other comprehensive income, before reclassifications	3
Amounts reclassified to earnings	2
Total other comprehensive income/(loss), net of tax	5
Balance at end of period	(7)
Accumulated Other Comprehensive Loss
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	(104)
Total other comprehensive income/(loss), net of tax	17
Balance at end of period	(87)
AOCI Attributable to Parent
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	(104)	(79)
Other comprehensive income, before reclassifications	15
Amounts reclassified to earnings	2
Balance at end of period	$ (87)	$ (101)