Pension and Other Postretirement Benefits - Schedule of Components of Net Periodic Costs (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Domestic Pension 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	3	4	6	8
Expected return on plan assets	(5)	(5)	(9)	(10)
Amortization of deferred losses	1	1	2	2
Amortization of prior service (credits)	0	0	0	0
Settlements, curtailments and other	0	0	0	0
Net periodic benefit costs	(1)	0	(1)	0
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	2	3	4	5
Interest costs on projected benefit obligations	8	12	15	23
Expected return on plan assets	(14)	(16)	(28)	(32)
Amortization of deferred losses	4	3	8	7
Amortization of prior service (credits)	0	0	0	0
Settlements, curtailments and other	0	0	0	(1)
Net periodic benefit costs	0	2	(1)	2
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	1	1	2	2
Expected return on plan assets	0	0	0	0
Amortization of deferred losses	0	0	0	0
Amortization of prior service (credits)	(1)	(2)	(2)	(3)
Settlements, curtailments and other	0	0	0	0
Net periodic benefit costs	$ 0	$ (1)	$ 0	$ (1)