Pension and Other Postretirement Benefits - Schedule of Components of Net Periodic Costs (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Settlements, curtailments and other		$ 1		$ 1
Domestic Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	0	2	0	4
Interest costs on projected benefit obligations	4	4	8	8
Expected return on plan assets	(6)	(4)	(11)	(8)
Amortization of deferred losses	1	2	2	3
Amortization of prior service (credits)	0	0	0	0
Settlements, curtailments and other	0	1	0	4
Net periodic benefits costs	(1)	5	(1)	11
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	3	3	6	6
Interest costs on projected benefit obligations	13	13	26	25
Expected return on plan assets	(18)	(19)	(37)	(37)
Amortization of deferred losses	3	3	6	6
Amortization of prior service (credits)	0	0	0	0
Settlements, curtailments and other	0	0	0	0
Net periodic benefits costs	1	0	1	0
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	0	0	0	0
Interest costs on projected benefit obligations	2	2	3	4
Expected return on plan assets	0	0	0	0
Amortization of deferred losses	0	0	0	0
Amortization of prior service (credits)	(3)	(4)	(6)	(7)
Settlements, curtailments and other	0	0	0	0
Net periodic benefits costs	$ (1)	$ (2)	$ (3)	$ (3)