Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Changes in Carrying Value

The following table represents our change in carrying value of intangible assets (in millions):

	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Three Months Ended March 31, 2022
Customer relationships, beginning of period	$	1,844.8	$	(795.1)	$	1,049.7
Amortization expense	—		(32.8)		(32.8)
Customer relationships, end of period	$	1,844.8	$	(827.9)	$	1,016.9

Schedule of Amortization Expense

The following table summarizes our estimated aggregate amortization expense for the next five years and thereafter (in millions):

2022 (remaining)	$	95.6
2023	127.6
2024	127.6
2025	110.2
2026	106.3
Thereafter	449.6
Total	$	1,016.9