CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025		Dec. 31, 2024		Dec. 31, 2023
Income Statement [Abstract]
Revenues from services	$ 17,957.1		$ 17,853.9	[1]	$ 18,914.5
Cost of services	14,959.5		14,767.1		15,556.5
Gross profit	2,997.6		3,086.8		3,358.0
Selling and administrative expenses, excluding impairment charges	2,758.8		2,780.8		3,047.1
Impairment charges	88.7	[2]	0.0		55.1
Selling and administrative expenses	2,847.5		2,780.8		3,102.2
Operating profit	150.1		306.0		255.8
Interest and other expenses, net	56.7		49.2		49.9
Earnings before income taxes	93.4		256.8		205.9
Provision for income taxes	106.7		111.7		117.1
Net (loss) earnings	$ (13.3)		$ 145.1		$ 88.8
Net (loss) earnings per share - basic	$ (0.29)		$ 3.04		$ 1.78
Net (loss) earnings per share - diluted	$ (0.29)		$ 3.01		$ 1.76
Weighted average shares - basic	46.6		47.8		49.8
Weighted average shares - diluted	46.6		48.3		50.4

[1] Effective January 1, 2025, our segment reporting was realigned to include our Morocco business within Other Southern Europe. Accordingly, France is now adjusted to exclude Morocco. All previously reported results have been recast to conform to the current year presentation.

[2] Impairment charges for the year ended December 31, 2025 consist of a goodwill impairment related to our investments in Switzerland and the United Kingdom and an impairment of an indefinite-lived intangible asset in our Switzerland business.