Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of indefinite-lived intangible assets

At December 31, 2023	Cost		Accumulated amortization		Net book value
Trade names and trademarks	$	221.9	$	(29.7)	$	192.2
Customer relationships	2,553.1		(225.0)		2,328.1
Software and technology assets	670.4		(285.5)		384.9
Software under development	8.9		—		8.9
Backlog	1.1		(1.1)		—
	$	3,455.4	$	(541.3)	$	2,914.1

At December 31, 2022	Cost		Accumulated amortization		Net book value
Trade names and trademarks	$	54.0	$	(2.9)	$	51.1
Customer relationships	245.4		(85.6)		159.8
Software and technology assets	289.1		(182.3)		106.8
Software under development	4.5		—		4.5
Backlog	1.1		(0.6)		0.5
	$	594.1	$	(271.4)	$	322.7

Schedule of finite-lived intangible assets

Amortization is recognized in earnings on a straight-line basis over the estimated useful lives of intangible assets from the date that they are available for use. The amortization periods of finite-lived intangible assets are re-evaluated periodically when facts and

circumstances indicate that the remaining useful lives may have changed. Indefinite-lived trade names and trademarks are not amortized. The estimated useful lives of the Company's intangible assets are as follows:

Asset	Rate / term
Trade names and trademarks	2 - 15 years or indefinite-lived
Customer relationships	6 - 20 years
Software and technology assets	3 - 7 years

At December 31, 2023	Cost		Accumulated amortization		Net book value
Trade names and trademarks	$	221.9	$	(29.7)	$	192.2
Customer relationships	2,553.1		(225.0)		2,328.1
Software and technology assets	670.4		(285.5)		384.9
Software under development	8.9		—		8.9
Backlog	1.1		(1.1)		—
	$	3,455.4	$	(541.3)	$	2,914.1

At December 31, 2022	Cost		Accumulated amortization		Net book value
Trade names and trademarks	$	54.0	$	(2.9)	$	51.1
Customer relationships	245.4		(85.6)		159.8
Software and technology assets	289.1		(182.3)		106.8
Software under development	4.5		—		4.5
Backlog	1.1		(0.6)		0.5
	$	594.1	$	(271.4)	$	322.7

Schedule of annual amortization expense

At December 31, 2023, estimated annual amortization expense for the next five years ended December 31 are as follows:

2024	$	321.5
2025	304.2
2026	290.8
2027	228.1
2028	185.0
	$	1,329.6