Shareholders' Equity (Changes in the Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	$ 1,396	$ 1,425	$ 1,794	$ 1,792
Total other comprehensive income/(loss), net of tax	(24)	34	(51)	51
Balance at end of period	1,002	1,975	1,002	1,975
Foreign Currency Translation Adjustments
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period			(46)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			(43)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			0
Total other comprehensive income/(loss), net of tax			(43)
Balance at end of period	(89)		(89)
Unrealized Gain/(Loss) on Derivatives, net of tax
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period			12
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			(5)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(3)
Total other comprehensive income/(loss), net of tax			(8)
Balance at end of period	4		4
Accumulated Other Comprehensive Loss
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period			(34)
Total other comprehensive income/(loss), net of tax			(51)
Balance at end of period	(85)		(85)
AOCI Attributable to Parent
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period	(61)	(87)	(34)	(104)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			(48)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(3)
Balance at end of period	$ (85)	$ (53)	$ (85)	$ (53)