Additional Financial Information - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions		12 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Accumulated other comprehensive loss, net of tax:
Balance, beginning of year		$ (1,026)	$ (582)	$ 610
Fiscal year activity, net of income tax (expense) benefit		62	(444)	(1,192)
Balance, end of year		(964)	(1,026)	(582)
Unrealized Holding Gains (Losses) on Securities [Member]
Accumulated other comprehensive loss, net of tax:
Balance, beginning of year		20	19	24
Fiscal year activity, net of income tax (expense) benefit	[1]	(25)	1	(5)
Balance, end of year		(5)	20	19
Benefit Plan Adjustments [Member]
Accumulated other comprehensive loss, net of tax:
Balance, beginning of year		(445)	(413)	(384)
Fiscal year activity, net of income tax (expense) benefit	[2]	8	(32)	(29)
Balance, end of year		(437)	(445)	(413)
Foreign Currency Translation Adjustments [Member]
Accumulated other comprehensive loss, net of tax:
Balance, beginning of year		(585)	(188)	971
Fiscal year activity, net of income tax (expense) benefit	[3]	75	(397)	(1,159)
Balance, end of year		(510)	(585)	(188)
Share of Other Comprehensive Income from Equity Affiliates Net [Member]
Accumulated other comprehensive loss, net of tax:
Balance, beginning of year		(16)	0	(1)
Fiscal year activity, net of income tax (expense) benefit	[4]	4	(16)	1
Balance, end of year		$ (12)	$ (16)	$ 0

[1] Net of income tax (benefit) expense of ($10) million, nil and nil for the fiscal years ended June 30, 2017, 2016 and 2015, respectively.

[2] Net of income tax expense (benefit) of $8 million, ($14) million and ($11) million for the fiscal years ended June 30, 2017, 2016 and 2015, respectively.

[3] Excludes $9 million, ($1) million and ($24) million relating to noncontrolling interests for the fiscal years ended June 30, 2017, 2016 and 2015, respectively.

[4] Net of income tax expense (benefit) of $2 million, ($7) million and $1 million for the fiscal years ended June 30, 2017, 2016 and 2015, respectively.