PENSION AND POST-RETIREMENT BENEFIT PLANS - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Pension Plans U.S.
Components of net periodic benefit cost:
Service cost	$ 9	$ 8	$ 18	$ 16
Interest cost	7	8	15	16
Expected return on plan assets	(13)	(12)	(26)	(24)
Amortization of:
Prior service cost			1
Actuarial loss	4	3	8	6
Net periodic benefit cost	7	7	16	14
Pension Plans International
Components of net periodic benefit cost:
Service cost	7	6	14	12
Interest cost	3	4	6	8
Expected return on plan assets	(4)	(5)	(8)	(10)
Amortization of:
Prior service cost	1		1	1
Actuarial loss	2	3	5	6
Net periodic benefit cost	9	8	18	17
Employer contributions			6
Other than Pension Plans Post-Retirement
Components of net periodic benefit cost:
Service cost	1	1	2	2
Interest cost	1	2	3	4
Expected return on plan assets			(1)	(1)
Amortization of:
Actuarial loss	1		1
Net periodic benefit cost	$ 3	$ 3	$ 5	$ 5