GOODWILL AND INTANGIBLE ASSETS

6 Months Ended

Mar. 29, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

The following table reflects the activity of goodwill by reportable operating segment:



(In millions)	Oncology Systems			Proton Solutions			Total
Balance at September 28, 2018	$	242.1		$	51.5		$	293.6
Business combination	22.0			—			22.0
Measurement period adjustment to a business combination in prior year	(4.7		)	—			(4.7		)
Foreign currency translation adjustments	—			(1.6		)	(1.6		)
Balance at March 29, 2019	$	259.4		$	49.9		$	309.3

See Note 2, "Business Combinations," for more information.

The following table reflects the gross carrying amount and accumulated amortization of the Company's intangible assets:



	March 29, 2019							September 28, 2018
(In millions)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Technologies and patents	$	136.2	$	(76.8	)	$	59.4	$	139.6	$	(73.9	)	$	65.7
Customer contracts and supplier relationship	44.4		(22.0		)	22.4		44.9		(19.1		)	25.8
Other	6.1		(5.9		)	0.2		6.6		(5.8		)	0.8
Total intangible with finite lives	186.7		(104.7		)	82.0		191.1		(98.8		)	92.3
In-process research and development with indefinite lives	8.8		—			8.8		8.8		—			8.8
Total intangible assets	$	195.5	$	(104.7	)	$	90.8	$	199.9	$	(98.8	)	$	101.1

Amortization expense for intangible assets was $6.7 million and $4.1 million during the three months ended March 29, 2019 and March 30, 2018, respectively, and $11.4 million and $10.4 million during the six months ended March 29, 2019 and March 30, 2018, respectively.

As of March 29, 2019, the Company estimates its remaining amortization expense for intangible assets with finite lives will be as follows (in millions):



Fiscal Years:	Remaining Amortization Expense
Remainder of 2019	$	10.4
2020	18.8
2021	15.2
2022	14.1
2023	13.4
Thereafter	10.1
Total remaining amortization for intangible assets	$	82.0