Shareholders' Equity - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance	$ (880)
Accumulated other comprehensive income (loss), ending balance	(857)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance	(892)	$ (691)
Other comprehensive income / (loss) before reclassifications	(48)	(41)
Amounts reclassified from accumulated other comprehensive loss	74	0
Net current period other comprehensive income / (loss)	26	(41)
Accumulated other comprehensive income (loss), ending balance	(866)	(732)
Net Investment Hedge
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance	(13)	(13)
Other comprehensive income / (loss) before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive loss	0	0
Net current period other comprehensive income / (loss)	0	0
Accumulated other comprehensive income (loss), ending balance	(13)	(13)
Pension
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance	40	(54)
Other comprehensive income / (loss) before reclassifications	(1)	(1)
Amounts reclassified from accumulated other comprehensive loss	(1)	4
Net current period other comprehensive income / (loss)	(2)	3
Accumulated other comprehensive income (loss), ending balance	38	(51)
Effective Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance	(15)	(8)
Other comprehensive income / (loss) before reclassifications	(2)	8
Amounts reclassified from accumulated other comprehensive loss	1	(11)
Net current period other comprehensive income / (loss)	(1)	(3)
Accumulated other comprehensive income (loss), ending balance	(16)	(11)
Total Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance	(880)	(766)
Other comprehensive income / (loss) before reclassifications	(51)	(34)
Amounts reclassified from accumulated other comprehensive loss	74	(7)
Net current period other comprehensive income / (loss)	23	(41)
Accumulated other comprehensive income (loss), ending balance	$ (857)	$ (807)