Impairment and Restructuring Charges - Schedule of Changes in Restructuring Program Liabilities (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring Liabilities, Beginning Balance	$ 40	$ 41	$ 49	$ 44
Additions	12	47	27	67
Payments	(17)	(36)	(40)	(58)
Other	1	0	0	(1)
Restructuring Liabilities, Ending Balance	36	52	36	52
One Time Employee Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Liabilities, Beginning Balance	25	30	33	33
Additions	11	47	26	67
Payments	(15)	(36)	(38)	(58)
Other	1	0	1	(1)
Restructuring Liabilities, Ending Balance	22	41	22	41
Facility Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Liabilities, Beginning Balance	5	5	6	5
Additions	0	0	0	0
Payments	(1)	0	(1)	0
Other	0	0	(1)	0
Restructuring Liabilities, Ending Balance	4	5	4	5
Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Liabilities, Beginning Balance	10	6	10	6
Additions	1	0	1	0
Payments	(1)	0	(1)	0
Other	0	0	0	0
Restructuring Liabilities, Ending Balance	$ 10	$ 6	$ 10	$ 6