Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019		Jun. 30, 2018
Allowances for doubtful accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of beginning of year	$ (35)	$ (28)		$ (68)
Additions	(63)	(15)		0
Utilization	5	8		40
Other	0	0		0
Balance as of end of year	(93)	(35)		(28)
Deferred tax valuation allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of beginning of year	(6)	(45)		(143)
Additions	(19)	(10)		(11)
Utilization	5	0		109
Other	0	49	[1]	0
Balance as of end of year	$ (20)	$ (6)		$ (45)

[1] ^{Represents the allocation of the deferred tax valuation allowance between 21CF and the Company in accordance with the Distribution (See Note 1—Description of Business and Basis of Presentation under the heading “Basis of Presentation”).}