Additional Financial Information - Components of Accumulated Other Comprehensive Income (Loss) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2012
Accumulated other comprehensive income (loss), net of tax:
Balance, beginning of year	$ 271		$ 1,047		$ 1,531
Fiscal year activity, net of income tax (expense) benefit	339		(776)		(484)
Balance, end of year	610		271		1,047
Unrealized Holding Gains (Losses) on Securities [Member]
Accumulated other comprehensive income (loss), net of tax:
Balance, beginning of year	2		1		1
Fiscal year activity, net of income tax (expense) benefit	22	[1]	1	[1]	0	[1]
Balance, end of year	24		2		1
Pension Plans [Member]
Accumulated other comprehensive income (loss), net of tax:
Balance, beginning of year	(348)		(358)		(214)
Fiscal year activity, net of income tax (expense) benefit	(36)	[2]	10	[2]	(144)	[2]
Balance, end of year	(384)		(348)		(358)
Foreign Currency Translation [Member]
Accumulated other comprehensive income (loss), net of tax:
Balance, beginning of year	617		1,404		1,744
Fiscal year activity, net of income tax (expense) benefit	354	[3]	(787)	[3]	(340)	[3]
Balance, end of year	971		617		1,404
Share of Other Comprehensive Income from Equity Affiliates Net [Member]
Accumulated other comprehensive income (loss), net of tax:
Balance, beginning of year	0		0		0
Fiscal year activity, net of income tax (expense) benefit	(1)	[4]	0	[4]	0	[4]
Balance, end of year	$ (1)		$ 0		$ 0

[1] Net of income tax expense of $14 million, nil and $1 million for the fiscal years ended June 30, 2014, 2013 and 2012, respectively.

[2] Net of income tax (benefit) expense of $(3) million, $5 million and $(50) million for the fiscal years ended June 30, 2014, 2013 and 2012, respectively.

[3] Excludes $2 million, $(10) million and $(5) million relating to noncontrolling interests for the fiscal years ended June 30, 2014, 2013 and 2012, respectively.

[4] Net of income tax benefit of $1 million for the fiscal year ended June 30, 2014 and nil for the fiscal years ended June 30, 2013 and 2012.