Intangible Assets (Tables)

6 Months Ended

Jun. 30, 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
Six Months Ended June 30, 2022
Customer relationships, beginning of period	$	1,844.8	$	(795.1)	$	1,049.7
Amortization expense	—		(64.7)		(64.7)
Customer relationships, end of period	$	1,844.8	$	(859.8)	$	985.0

Schedule of Amortization Expense

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

2022 (remaining)	$	63.7
2023	127.6
2024	127.6
2025	110.2
2026	106.3
Thereafter	449.6
Total	$	985.0