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FAIR VALUE MEASUREMENTS - Narrative (Details) - Convertible debt investments - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 30, 2023
Dec. 31, 2022
Sep. 30, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Cost basis of investment $ 225.9 $ 223.0 $ 225.8
Gross unrealized loss 140.9 131.9 140.0
Debt Securities, Available-for-Sale, Allowance for Credit Loss $ 101.3 $ 0.0 $ 101.3
Minimum      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Debt term 3 years 8 months 12 days    
Maximum      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Debt term 5 years 8 months 12 days