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GUARANTEES AND CONTINGENCIES - Additional Information (Details) - Canada Revenue Agency (CRA)
$ in Millions
 12 Months Ended
Jun. 30, 2024
USD ($)
Loss Contingencies [Line Items]  
Estimated amount of loss resulting from an adverse tax position $ 80
Income taxes paid $ 33
Tax Year 2012  
Loss Contingencies [Line Items]  
Additional tax expense (as a percent) 10.00%
Tax Year 2013  
Loss Contingencies [Line Items]  
Additional tax expense (as a percent) 10.00%
Tax Year 2014  
Loss Contingencies [Line Items]  
Additional tax expense (as a percent) 10.00%
Tax Year 2015  
Loss Contingencies [Line Items]  
Additional tax expense (as a percent) 10.00%
Tax Year 2016  
Loss Contingencies [Line Items]  
Additional tax expense (as a percent) 10.00%
Tax Years 2017, 2018 and 2019  
Loss Contingencies [Line Items]  
Estimated amount of loss resulting from an adverse tax position $ 470
Minimum | Tax Year 2012  
Loss Contingencies [Line Items]  
Income tax examination, estimate of increase to taxable income 90
Minimum | Tax Year 2013  
Loss Contingencies [Line Items]  
Income tax examination, estimate of increase to taxable income 90
Minimum | Tax Year 2014  
Loss Contingencies [Line Items]  
Income tax examination, estimate of increase to taxable income 90
Minimum | Tax Year 2015  
Loss Contingencies [Line Items]  
Income tax examination, estimate of increase to taxable income 90
Minimum | Tax Year 2016  
Loss Contingencies [Line Items]  
Income tax examination, estimate of increase to taxable income 90
Maximum | Tax Year 2012  
Loss Contingencies [Line Items]  
Income tax examination, estimate of increase to taxable income 100
Maximum | Tax Year 2013  
Loss Contingencies [Line Items]  
Income tax examination, estimate of increase to taxable income 100
Maximum | Tax Year 2014  
Loss Contingencies [Line Items]  
Income tax examination, estimate of increase to taxable income 100
Maximum | Tax Year 2015  
Loss Contingencies [Line Items]  
Income tax examination, estimate of increase to taxable income 100
Maximum | Tax Year 2016  
Loss Contingencies [Line Items]  
Income tax examination, estimate of increase to taxable income $ 100