DEBT (Long-term Debt, Net of Unamortized Discounts or Premiums) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Debt Instrument [Line Items]
Weighted average interest rate on long-term debt	4.41%	4.41%
Long-term debt	$ 1,791	$ 1,789
Less: Current maturities of long-term debt	(400)	0
Long-term debt, noncurrent	$ 1,391	1,789	$ 1,786	$ 1,588	$ 2,161
Senior Unsecured Long-Term Notes and Debentures; 5.95%, $400 Due October 2017 [Member]
Debt Instrument [Line Items]
Weighted average interest rate on long-term debt	5.95%
Face value	$ 400
Long-term debt	$ 400	400
Senior Unsecured Long-Term Notes and Debentures; 3.80%, $300 Due November 2021 [Member]
Debt Instrument [Line Items]
Weighted average interest rate on long-term debt	3.80%
Face value	$ 300
Long-term debt	$ 298	297
Senior Unsecured Long-Term Notes and Debentures; 3.05%, $600 Due November 2022 [Member]
Debt Instrument [Line Items]
Weighted average interest rate on long-term debt	3.05%
Face value	$ 600
Long-term debt	$ 596	596
Senior Unsecured Long-Term Notes and Debentures; 3.50%, $500 Due December 2024 [Member]
Debt Instrument [Line Items]
Weighted average interest rate on long-term debt	3.50%
Face value	$ 500
Long-term debt	$ 497	$ 496