Goodwill and Intangible Assets (Tables)

3 Months Ended

Dec. 31, 2021

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Changes in goodwill

The following table sets forth the change in the carrying amount of goodwill during the three months ended December 31, 2021 (in millions):

Balance as of September 30, 2021	$	1,760.9
Acquisition of Midway		30.0
Divestiture of Solar Products		(13.6	)
Translation and other adjustments		0.1
Balance as of December 31, 2021	$	1,777.4

Summary of Intangible Assets

The following table summarizes intangible assets by category (in millions, except time periods):

	December 31, 2021			September 30, 2021			December 31, 2020			Weighted-Average Remaining Life1 (Years)
Amortizable intangible assets:
Non-compete agreements	$	0.2		$	0.2		$	0.2			0.4
Customer relationships		1,092.3			1,076.2			1,085.9			15.8
Trademarks		1.0			—			3.7			1.8
Total amortizable intangible assets		1,093.5			1,076.4			1,089.8			15.8
Accumulated amortization		(682.3	)		(671.4	)		(607.0	)
Total amortizable intangible assets, net		411.2			405.0			482.8
Indefinite-lived trademarks		9.8			9.8			9.8
Total intangibles, net	$	421.0		$	414.8		$	492.6

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1.As of December 31, 2021.

Summary of Estimated Future Amortization

The following table summarizes the estimated future amortization expense for intangible assets (in millions):

Year Ending December 31,
2022	$	81.6
2023		66.9
2024		53.9
2025		43.7
2026		35.2
Thereafter		129.9
Total future amortization expense	$	411.2