FAIR VALUE MEASUREMENTS - Rollforward (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total realized / unrealized gains (losses) included in OCI	$ 13.0	$ (103.7)	$ (25.8)	$ (74.1)
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	0.6	(79.2)	(33.5)	(78.9)
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]
Purchases	0.0	25.0	0.0	25.0
Total realized / unrealized gains included in net earnings	1.1	0.9	3.0	2.7
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	0.6	(79.2)	(33.5)	(78.9)
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	84.8	192.4	117.0	190.3
Fair value at end of period	$ 86.5	$ 139.1	$ 86.5	$ 139.1

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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The aggregate amount of income from investments (for example, dividends) not considered a component of the entity's core operations.

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