Impairment and Restructuring Charges - Schedule of Changes in Restructuring Program Liabilities (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring Liabilities, Beginning Balance	$ 32	$ 36	$ 40	$ 42
Additions	10	19	34	37
Payments	(18)	(21)	(47)	(45)
Other	1	(1)	(2)	(1)
Restructuring Liabilities, Ending Balance	25	33	25	33
One Time Employee Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Liabilities, Beginning Balance	22	23	28	29
Additions	10	19	34	37
Payments	(17)	(21)	(46)	(44)
Other	1	(1)	0	(2)
Restructuring Liabilities, Ending Balance	16	20	16	20
Facility Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Liabilities, Beginning Balance	0	2	2	2
Additions	0	0	0	0
Payments	0	0	0	0
Other	0	0	(2)	0
Restructuring Liabilities, Ending Balance	0	2	0	2
Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Liabilities, Beginning Balance	10	11	10	11
Additions	0	0	0	0
Payments	(1)	0	(1)	(1)
Other	0	0	0	1
Restructuring Liabilities, Ending Balance	$ 9	$ 11	$ 9	$ 11