Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 200	$ 68
Other comprehensive income (loss):
Net gains (losses) on cash flow hedges, net of tax (a)	4	1
Foreign currency translation adjustments, net of tax (b)	24	(51)
Net investment hedge of foreign operations, net of tax (c)	0	(2)
Pension, net of tax (d)	2	1
Other comprehensive income (loss)	30	(51)
Total comprehensive income	230	17
Comprehensive (income) loss attributable to non-controlling interest	(2)	(2)
Comprehensive income attributable to Amcor plc	228	15
(a) Tax (expense) benefit related to cash flow hedges	(1)	0
(b) Tax (expense) benefit related to foreign currency translation adjustments	3	(2)
(c) Tax (expense) benefit related to net investment hedge of foreign operations	0	1
(d) Tax (expense) benefit related to pension adjustments	$ 1	$ 0