SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Government Assistance (Details) - COVID-19 Pandemic $ in Millions	3 Months Ended
	Jun. 30, 2020 USD ($)
Unusual or Infrequent Item, or Both [Line Items]
Government assistance	$ 99
Government assistance, deferred	2
Selling, general and administrative expenses
Unusual or Infrequent Item, or Both [Line Items]
Government assistance	87
Cost of Sales
Unusual or Infrequent Item, or Both [Line Items]
Government assistance	$ 10