Shareholders' Equity (Changes in the Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	$ (3,490)	$ (1,780)	$ (2,851)	$ (706)
Total other comprehensive income/(loss), net of tax	10	30	(4)	(32)
Balance at end of period	(3,447)	(2,212)	(3,447)	(2,212)
Other Comprehensive Income (Loss), Tax			1	5
Foreign Currency Translation Adjustments
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period			(137)	(102)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			(5)	(38)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			0	0
Total other comprehensive income/(loss), net of tax			(5)	(38)
Balance at end of period	(142)	(140)	(142)	(140)
Unrealized Gain/(Loss) on Derivatives, net of tax
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period			(14)	(12)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			5	11
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(4)	(5)
Total other comprehensive income/(loss), net of tax			1	6
Balance at end of period	(13)	(6)	(13)	(6)
Accumulated Other Comprehensive Loss
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period			(151)	(114)
Total other comprehensive income/(loss), net of tax			(4)	(32)
Balance at end of period	(155)	(146)	(155)	(146)
AOCI Attributable to Parent
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	(165)	(176)	(151)	(114)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			0	(27)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(4)	(5)
Balance at end of period	$ (155)	$ (146)	$ (155)	$ (146)