Goodwill (Tables)

6 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes to the carrying amount of consolidated goodwill by segment for the six months ended 31 March 2021 are as follows:

	Industrial Gases– Americas	Industrial Gases– EMEA	Industrial Gases– Asia	Industrial Gases– Global	Corporate  and other	Total
Goodwill, net at 30 September 2020	$152.6	$524.1	$180.4	$19.5	$14.9	$891.5
Acquisitions(A)	—	14.5	—	—	—	14.5
Currency translation and other	4.4	0.9	3.0	0.4	—	8.7
Goodwill, net at 31 March 2021	$157.0	$539.5	$183.4	$19.9	$14.9	$914.7

(A)We recognized goodwill for expected cost synergies and growth opportunities resulting from a business combination in the second quarter of fiscal year 2021. Refer to Note 3, Acquisitions, for additional information. The goodwill recognized is not deductible for tax purposes.

	31 March	30 September
	2021	2020
Goodwill, gross	$1,284.8	$1,230.2
Accumulated impairment losses(B)	(370.1)	(338.7)
Goodwill, net	$914.7	$891.5

(B)Accumulated impairment losses include the impacts of currency translation. These losses are attributable to our Latin America reporting unit ("LASA") within the Industrial Gases – Americas segment.