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Intangible Assets, net (Tables)

12 Months Ended

Dec. 31, 2021

Intangible Assets, net

Summary of intangible assets, net


			December 31, 2021						December 31, 2020
	Weighted Average		Gross						Gross
	Amortizable		Carrying			Accumulated			Carrying			Accumulated
	Life in Years		Amount			Amortization			Amount			Amortization

			(in millions)
Intangible assets subject to amortization:
Covenants not to compete	5.0		$	0.5		$	(0.2)		$	0.7		$	(0.5)
Customer lists/relationships	14.3			713.0			(435.1)			623.2			(396.7)
Other	8.5			25.2			(9.4)			9.2			(9.0)
				738.7			(444.7)			633.1			(406.2)
Intangible assets not subject to amortization:
Trade names				783.7			—			720.2			—
			$	1,522.4		$	(444.7)		$	1,353.3		$	(406.2)

Summary of estimated aggregate amortization expense


	(in millions)
2022		46.8
2023		42.6
2024		39.1
2025		34.9
2026		25.4