Shareholders' Equity (Changes in the Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	$ (3,212)	$ (2,957)
Total other comprehensive income/(loss), net of tax	12	(14)
Other Comprehensive Income (Loss), Tax	5	(3)
Balance at end of period	(3,276)	(3,607)
Foreign Currency Translation Adjustments
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	(138)	(137)
Other comprehensive income, before reclassifications	5	(11)
Amounts reclassified to earnings	0	0
Total other comprehensive income/(loss), net of tax	5	(11)
Balance at end of period	(133)	(148)
Unrealized Gain/(Loss) on Derivatives, net of tax
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	(29)	(14)
Other comprehensive income, before reclassifications	6	(1)
Amounts reclassified to earnings	1	(2)
Total other comprehensive income/(loss), net of tax	7	(3)
Balance at end of period	(22)	(17)
Accumulated Other Comprehensive Loss
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	(167)	(151)
Total other comprehensive income/(loss), net of tax	12	(14)
Balance at end of period	(155)	(165)
Accumulated Other Comprehensive Loss
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	(167)	(151)
Other comprehensive income, before reclassifications	11	(12)
Amounts reclassified to earnings	1	(2)
Balance at end of period	$ (155)	$ (165)