FAIR VALUE - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Apr. 01, 2016	Oct. 02, 2015
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Available-for-sale securities:	$ 88.8	$ 93.0
Non-U.S. government security
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Available-for-sale securities:		0.7
Fair Value, Measurements, Recurring
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Total assets measured at fair value	88.8	93.0
Derivative liabilities	(1.9)
Contingent consideration	(3.2)	(4.1)
Total liabilities measured at fair value	(5.1)	(4.1)
Fair Value, Measurements, Recurring | Corporate debt securities
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Available-for-sale securities:	88.8	92.3
Fair Value, Measurements, Recurring | Non-U.S. government security
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Available-for-sale securities:		0.7
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Instruments
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Total assets measured at fair value	0.0	0.0
Derivative liabilities	0.0
Contingent consideration	0.0	0.0
Total liabilities measured at fair value	0.0	0.0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Instruments | Corporate debt securities
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Available-for-sale securities:	0.0	0.0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Instruments | Non-U.S. government security
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Available-for-sale securities:		0.0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Total assets measured at fair value	0.0	9.1
Derivative liabilities	(1.9)
Contingent consideration	0.0	0.0
Total liabilities measured at fair value	(1.9)	0.0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs | Corporate debt securities
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Available-for-sale securities:	0.0	8.4
Fair Value, Measurements, Recurring | Significant Other Observable Inputs | Non-U.S. government security
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Available-for-sale securities:		0.7
Fair Value, Measurements, Recurring | Significant Unobservable Inputs
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Total assets measured at fair value	88.8	83.9
Derivative liabilities	0.0
Contingent consideration	(3.2)	(4.1)
Total liabilities measured at fair value	(3.2)	(4.1)
Fair Value, Measurements, Recurring | Significant Unobservable Inputs | Corporate debt securities
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Available-for-sale securities:	$ 88.8	83.9
Fair Value, Measurements, Recurring | Significant Unobservable Inputs | Non-U.S. government security
Assets/Liabilities Measured at Fair Value on a Recurring Basis
Available-for-sale securities:		$ 0.0