Income Taxes (Schedule of Deferred Tax Assets and Liabilities After Netting by Tax Jurisdiction) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Noncurrent deferred income tax asset	$ 36	$ 37
Noncurrent deferred income tax liability	(1,749)	(1,814)
Net deferred income tax liability	$ (1,713)	$ (1,777)

Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting and classified as noncurrent.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
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Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant