GOODWILL AND OTHER INTANGIBLE ASSETS

9 Months Ended

Jul. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

The following table summarizes the changes in the carrying amount of goodwill by segment for the nine months ended July 31, 2019:



(in millions)	Rigid Industrial Packaging & Services			Paper Packaging & Services		Total
Balance at October 31, 2018	$	716.5		$	59.5	$	776.0
Goodwill acquired	22.3			769.4		791.7
Currency translation	(5.8		)	—		(5.8		)
Balance at July 31, 2019	$	733.0		$	828.9	$	1,561.9

The Caraustar Acquisition added $769.4 million of goodwill to the Paper Packaging & Services segment and the Tholu Acquisition added $22.3 million of goodwill to the Rigid Industrial Packaging & Services segment. See Note 3 to the interim condensed consolidated financial statements for additional disclosure of goodwill added by these acquisitions.

The following table summarizes the carrying amount of net intangible assets by class as of July 31, 2019 and October 31, 2018:



(in millions)	Gross Intangible Assets		Accumulated Amortization		Net Intangible Assets
July 31, 2019:
Indefinite lived:
Trademarks and patents	$	13.2	$	—	$	13.2
Definite lived:
Customer relationships	891.1		135.6		755.5
Trademarks, patents and trade names	27.0		7.9		19.1
Non-compete agreements	2.3		0.4		1.9
Other	22.0		17.4		4.6
Total	$	955.6	$	161.3	$	794.3



(in millions)	Gross Intangible Assets		Accumulated Amortization		Net Intangible Assets
October 31, 2018:
Indefinite lived:
Trademarks and patents	$	13.3	$	—	$	13.3
Definite lived:
Customer relationships	162.2		105.8		56.4
Trademarks and patents	10.9		5.1		5.8
Other	21.2		16.1		5.1
Total	$	207.6	$	127.0	$	80.6

Amortization expense for the three months ended July 31, 2019 and 2018 was $17.1 million and $3.8 million, respectively. Amortization expense for nine months ended July 31, 2019 and 2018 was $35.5 million and $11.5 million, respectively. Amortization expense for the next five years is expected to be $52.9 million in 2019, $69.1 million in 2020, $66.8 million in 2021, $59.2 million in 2022 and $56.4 million in 2023.

The Caraustar Acquisition added $725.5 million of intangibles to the Paper Packaging & Services segment and the Tholu Acquisition added $24.6 million of intangibles to the Rigid Industrial Packaging & Services agreement. See Note 3 to the interim condensed consolidated financial statements for additional disclosure of intangibles added by these acquisitions.

Definite lived intangible assets for the periods presented are subject to amortization and are being amortized using the straight-line method over periods that are contractually, legally determined, or over the period a market participant would benefit from the asset.