Intangible Assets

12 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

INTANGIBLE ASSETS

The table below summarizes the major classes of our intangible assets:

	2020			2019
30 September	Gross	Accumulated Amortization/ Impairment	Net	Gross	Accumulated Amortization/ Impairment	Net
Customer relationships	$538.0	($209.9)	$328.1	$487.9	($179.8)	$308.1
Patents and technology	39.1	(16.3)	22.8	39.0	(13.3)	25.7
Other	77.6	(33.7)	43.9	75.0	(33.4)	41.6
Total finite-lived intangible assets	654.7	(259.9)	394.8	601.9	(226.5)	375.4
Trade names and trademarks (indefinite-lived)	52.2	(11.2)	41.0	56.2	(12.1)	44.1
Total Intangible Assets	$706.9	($271.1)	$435.8	$658.1	($238.6)	$419.5

The increase in net intangible assets in fiscal year 2020 was primarily attributable to intangible assets acquired through business combinations, partially offset by amortization.

Amortization expense for intangible assets was $34.5, $33.1, and $30.0 in fiscal years 2020, 2019, and 2018, respectively. Refer to Note 1, Major Accounting Policies, for the amortization periods for each major class of intangible assets. The table below details projected annual amortization expense for intangible assets as of 30 September 2020:

2021	$36.6
2022	34.1
2023	33.0
2024	31.8
2025	30.7
Thereafter	228.6
Total	$394.8

Indefinite-lived intangible assets are subject to impairment testing at least annually or more frequently if events or changes in circumstances indicate that potential impairment exists. The impairment test for indefinite-lived intangible assets involves calculating the fair value of the indefinite-lived intangible assets and comparing the fair value to their carrying value. If the fair value is less than the carrying value, the difference is recorded as an impairment loss. During the fourth quarter of fiscal year 2020, we conducted our annual impairment test of indefinite-lived intangible assets and determined that the fair value of all our intangible assets exceeded their carrying value.