INVESTMENTS - Fair Market Value of Investments With Unrealized Losses Not Deemed to be Other-Than Temporarily Impaired (Details) - Available-for-sale securities $ in Millions	6 Months Ended
	Dec. 31, 2016 USD ($)
Fair market value of investments with unrealized losses not deemed to be other-than temporarily impaired
In a Loss Position for Less Than 12 Months, Fair Value	$ 781
In a Loss Position for Less Than 12 Months, Gross Unrealized Losses	(5)
In a Loss Position for More Than 12 Months, Fair Value	$ 14