STOCKHOLDERS' EQUITY (Narrative) (Details) shares in Thousands		3 Months Ended		6 Months Ended
	Nov. 18, 2020 shares	Dec. 31, 2020 USD ($) repurchase_program shares	Dec. 31, 2019 USD ($) repurchase_program	Dec. 31, 2020 USD ($) repurchase_program shares	Dec. 31, 2019 USD ($) repurchase_program
Accumulated Other Comprehensive Income (Loss) [Line Items]
Treasury stock retirement		$ 0		$ 0
Number of repurchase programs | repurchase_program		2	2	2	2
Amounts reclassified from accumulated other comprehensive net (loss) income		$ (4,000,000)	$ (3,000,000)	$ (9,000,000)	$ (7,000,000)
Long-Term Inter-Company Loans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive net (loss) income		$ 0	$ 0	$ 0	$ 0
Treasury Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Treasury stock retired | shares	28,000	28,000		28,000
Treasury stock retirement		$ 2,668,000,000		$ 2,668,000,000
Common Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Treasury stock retired | shares		28,000		28,000
Treasury stock retirement		$ (28,000,000)		$ (28,000,000)
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Treasury stock retirement		(2,640,000,000)		(2,640,000,000)
$2 Billion Open-Market Purchase Program [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stock repurchase program, authorized amount		2,000,000,000		2,000,000,000
Evergreen Program [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Authorization limit		$ 0		$ 0