INCOME TAXES (Details) - USD ($) $ in Millions		6 Months Ended		12 Months Ended
	Dec. 22, 2017	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Income Taxes
U.S. federal corporate income tax rate(as a percent)		21.00%	35.00%	28.10%	35.00%	35.00%
U.S. blended statutory income tax rate for the Company(as a percent)				28.10%
Transition tax payable period				8 years
TCJA provisional amount remeasurement period				1 year
Provisional charge for transition tax resulting from the TCJA				$ 351
Provisional charge for net deferred tax liability related to foreign withholding taxes on certain foregin earnings resulting from the TCJA				46
Provisional charges recorded as of the TCJA enactment date	$ 427
Other accrued liabilities
Income Taxes
Provisional liability for transition tax resulting from the TCJA		$ 31		31
Other noncurrent liabilities
Income Taxes
Provisional liability for transition tax resulting from the TCJA		320		320
Other assets
Income Taxes
Combined TCJA impact on U.S. net deferred tax assets, including the enactment date remeasurement, resulting from the statutory tax rate reduction				53
Net deferred tax liability for provisional charge related to foreign withholding taxes on certain foreign earnings resulting from the TCJA		$ 46		$ 46