Shareholders' Equity - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance	$ (1,049)
Accumulated other comprehensive income (loss), ending balance	(1,019)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance	(896)	$ (609)
Other comprehensive income (loss) before reclassifications	(1)	(60)
Amounts reclassified from accumulated other comprehensive income (loss)	25	9
Net current period other comprehensive income (loss)	24	(51)
Accumulated other comprehensive income (loss), ending balance	(872)	(660)
Net Investment Hedge
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance	(14)	(11)
Other comprehensive income (loss) before reclassifications	0	(2)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Net current period other comprehensive income (loss)	0	(2)
Accumulated other comprehensive income (loss), ending balance	(14)	(13)
Pension
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance	(106)	(90)
Other comprehensive income (loss) before reclassifications	(1)	0
Amounts reclassified from accumulated other comprehensive income (loss)	3	1
Net current period other comprehensive income (loss)	2	1
Accumulated other comprehensive income (loss), ending balance	(104)	(88)
Effective Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance	(34)	(12)
Other comprehensive income (loss) before reclassifications	1	(1)
Amounts reclassified from accumulated other comprehensive income (loss)	3	2
Net current period other comprehensive income (loss)	4	1
Accumulated other comprehensive income (loss), ending balance	(30)	(12)
Total Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning balance	(1,049)	(722)
Other comprehensive income (loss) before reclassifications	(1)	(63)
Amounts reclassified from accumulated other comprehensive income (loss)	31	12
Net current period other comprehensive income (loss)	30	(51)
Accumulated other comprehensive income (loss), ending balance	$ (1,019)	$ (773)