Fair Value (Schedule of Financial Assets and Liabilities Carried at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Millions		Dec. 31, 2018	Jun. 30, 2018
Assets
Investments		$ 185	$ 257
Redeemable noncontrolling interests		(106)	(275)
Fair value measurements recurring
Assets
Investments	[1]	185	257
Redeemable noncontrolling interests	[2]	(106)	(275)
Total		79	(18)
Fair value measurements recurring | Level 1
Assets
Investments	[1]	185	257
Redeemable noncontrolling interests	[2]	0	0
Total		185	257
Fair value measurements recurring | Level 3
Assets
Investments	[1]	0	0
Redeemable noncontrolling interests	[2]	(106)	(275)
Total		$ (106)	$ (275)

[1] Represents an investment in equity securities of Roku, Inc. (“Roku”) with a readily determinable fair value.

[2] The Company utilizes the market approach valuation technique for its Level 3 fair value measures. Inputs to such measures could include observable market data obtained from independent sources such as broker quotes and recent market transactions for similar assets. It is the Company’s policy to maximize the use of observable inputs in the measurement of its Level 3 fair value measurements. To the extent observable inputs are not available, the Company utilizes unobservable inputs based upon the assumptions market participants would use in valuing the liability. Examples of utilized unobservable inputs are future cash flows and long term growth rates.