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FAIR VALUE MEASUREMENTS - Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total realized / unrealized gains (losses) included in OCI	$ 5.4	$ 13.0	$ 1.6	$ (25.8)
Net Unrealized Gain (Loss) On Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total realized / unrealized gains (losses) included in OCI	5.1	0.6	3.6	(33.5)
Fair value, inputs, level 3 | Fair Value, Measurements, Recurring | Convertible debt investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total realized / unrealized gains included in net earnings	0.1	1.1	0.3	3.0
Fair value, inputs, level 3 | Fair Value, Measurements, Recurring | Convertible debt investments | Net Unrealized Gain (Loss) On Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total realized / unrealized gains (losses) included in OCI	5.1	0.6	3.6	(33.5)
Fair value, inputs, level 3 | Estimated Fair Value | Fair Value, Measurements, Recurring | Convertible debt investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value at beginning of period	84.5	84.8	85.8	117.0
Fair value at end of period	$ 89.7	$ 86.5	$ 89.7	$ 86.5

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