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Goodwill (Tables)
12 Months Ended
Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Carrying Amount of Goodwill by Segment
Changes to the carrying amount of consolidated goodwill by segment are as follows:
 
Industrial
Gases–
Americas
Industrial
Gases–
EMEA
Industrial
Gases–
Asia
Industrial
Gases–
Global
Corporate and other
Total
Goodwill, net at 30 September 2017

$163.7


$402.4


$135.2


$20.2


$—


$721.5

Acquisitions

29.5

38.1


10.4

78.0

Currency translation and other
(1.6
)
(7.5
)
(1.4
)
(.1
)

(10.6
)
Goodwill, net at 30 September 2018

$162.1


$424.4


$171.9


$20.1


$10.4


$788.9

Acquisitions

38.5

10.1



48.6

Currency translation and other
(5.8
)
(30.6
)
(3.5
)
(.5
)

(40.4
)
Goodwill, net at 30 September 2019

$156.3


$432.3


$178.5


$19.6


$10.4


$797.1


30 September
2019

2018

2017

Goodwill, gross

$1,162.2


$1,194.7


$1,138.7

Accumulated impairment losses(A)
(365.1
)
(405.8
)
(417.2
)
Goodwill, net

$797.1


$788.9


$721.5


(A) 
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.