GUARANTEES AND CONTINGENCIES - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended
	Jul. 11, 2018	Sep. 30, 2020
Internal Revenue Service (IRS)
Loss Contingencies [Line Items]
Estimated amount of loss resulting from an adverse tax position		$ 770
Income tax examination, tax		455
Income tax examination, penalties		130
Income tax examination, interest		185
Internal Revenue Service (IRS) | Tax Year 2010
Loss Contingencies [Line Items]
Estimated amount of loss resulting from an adverse tax position	$ 335
Additional tax expense, as a percent	20.00%
Internal Revenue Service (IRS) | Tax Year 2012
Loss Contingencies [Line Items]
Additional tax expense, as a percent	40.00%
Income tax examination, change in liability	$ 80
Canada Revenue Agency (CRA)
Loss Contingencies [Line Items]
Estimated amount of loss resulting from an adverse tax position		$ 45
Canada Revenue Agency (CRA) | Tax Year 2012
Loss Contingencies [Line Items]
Additional tax expense, as a percent		10.00%
Canada Revenue Agency (CRA) | Tax Year 2013
Loss Contingencies [Line Items]
Additional tax expense, as a percent		10.00%
Canada Revenue Agency (CRA) | Tax Year 2014
Loss Contingencies [Line Items]
Additional tax expense, as a percent		10.00%
Canada Revenue Agency (CRA) | Tax Year 2015
Loss Contingencies [Line Items]
Additional tax expense, as a percent		10.00%
Minimum | Canada Revenue Agency (CRA) | Tax Year 2012
Loss Contingencies [Line Items]
Income tax examination, estimate of increase to taxable income		$ 90
Minimum | Canada Revenue Agency (CRA) | Tax Year 2013
Loss Contingencies [Line Items]
Income tax examination, estimate of increase to taxable income		90
Minimum | Canada Revenue Agency (CRA) | Tax Year 2014
Loss Contingencies [Line Items]
Income tax examination, estimate of increase to taxable income		90
Minimum | Canada Revenue Agency (CRA) | Tax Year 2015
Loss Contingencies [Line Items]
Income tax examination, estimate of increase to taxable income		90
Maximum | Canada Revenue Agency (CRA) | Tax Year 2012
Loss Contingencies [Line Items]
Income tax examination, estimate of increase to taxable income		100
Maximum | Canada Revenue Agency (CRA) | Tax Year 2013
Loss Contingencies [Line Items]
Income tax examination, estimate of increase to taxable income		100
Maximum | Canada Revenue Agency (CRA) | Tax Year 2014
Loss Contingencies [Line Items]
Income tax examination, estimate of increase to taxable income		100
Maximum | Canada Revenue Agency (CRA) | Tax Year 2015
Loss Contingencies [Line Items]
Income tax examination, estimate of increase to taxable income		$ 100