Computer Software (Tables)

12 Months Ended

Dec. 31, 2021

Research and Development [Abstract]

Schedule of Capitalized Software

Software, net consists of the following (in millions):

	December 31,
	2021		2020
Internally developed software	$	1,123.6	$	998.5
Purchased software		94.3		89.8
Software		1,217.9		1,088.3
Accumulated amortization		(720.9)		(590.0)
Software, net	$	497.0	$	498.3

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Estimated amortization expense on software for the next five fiscal years is as follows (in millions):

2022(1)	$	139.8
2023		136.4
2024		82.5
2025		64.4
2026		36.7

(1) Assumes assets not in service as of December 31, 2021 are placed in service equally throughout the year.

Estimated amortization expense on other intangible assets for the next five fiscal years is as follows (in millions):

2022	$	143.1
2023		118.5
2024		92.4
2025		77.8
2026		63.0