SUPPLEMENTAL CASH FLOW & OTHER DATA (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended
	Aug. 31, 2020	Apr. 30, 2020	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020
Supplemental Cash Flow and Other Data [Line Items]
CARES Act, amount received from initial tranche		$ 65
CARES Act, amount received from secondary tranche	$ 73
Return of cash, CARES Act			$ 138
Other expense (income), net
Supplemental Cash Flow and Other Data [Line Items]
CARES Act proceeds recognized in the statement of operations					$ 65
Reversal of recognition of CARES Act proceeds				$ 65