Consolidated Statements of Comprehensive Loss (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Unrealized holding losses on securities, income tax expense	$ 12	$ 10
Benefit plan adjustments, income tax (benefit) expense	4	4
Share of other comprehensive income from equity affiliates, income tax expense (benefit)	$ 2	$ 2