Goodwill and intangible assets (Tables)

3 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table sets forth goodwill by segment as of October 1, 2020 and December 31, 2020:

	Americas		International		Total
Balance at October 1, 2020	$	865.8	$	150.2	$	1,016.0
Formulations Acquisition	29.2		—		29.2
Cumulative translation adjustment	0.1		10.9		11.0
Balance at December 31, 2020	$	895.1	$	161.1	$	1,056.2

Schedule of Finite-Lived Intangible Assets

Total intangible assets at December 31, 2020 are as follows:

	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Trademarks and trade names	$	59.7	$	(14.8)	$	44.9
Customer relationships	395.2		(67.4)		327.8
Patents	34.5		(11.4)		23.1
Proprietary technology	172.5		(43.1)		129.4
Proprietary formulas	21.9		(0.8)		21.1
Non-compete	0.5		(0.5)		—
Vendor relationships	8.0		(2.7)		5.3
Total Amortizable intangible assets	692.3		(140.7)		551.6
Trademarks and trade names - indefinite lived	1,366.6		—		1,366.6
Total Other intangible assets, net	$	2,058.9	$	(140.7)	$	1,918.2

Total intangible assets at September 30, 2020 were as follows:

	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Trademarks and trade names	$	59.7	$	(13.9)	$	45.8
Customer relationships	394.2		(60.8)		333.4
Patents	34.5		(10.8)		23.7
Proprietary technology	172.5		(37.6)		134.9
Proprietary formulas	2.4		(0.5)		1.9
Non-compete	0.5		(0.4)		0.1
Vendor relationships	5.0		(1.2)		3.8
Total Amortizable intangible assets	668.8		(125.2)		543.6
Trademarks and trade names - indefinite lived	1,365.4		—		1,365.4
Total Other intangible assets, net	$	2,034.2	$	(125.2)	$	1,909.0