Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

In the following table, revenue is disaggregated by service types for each of our reportable segments. See Note 2 to the Consolidated Financial Statements in our 2020 Annual Report on Form 10-K for descriptions of revenue service types.

	Three Months Ended September 30,
	2021											2020
	Staffing and Interim		Outcome- Based Solutions and Consulting		Permanent Recruitment		Other		Total			Staffing and Interim		Outcome- Based Solutions and Consulting		Permanent Recruitment		Other		Total
Americas:
United States	$	525.0	$	46.1	$	40.4	$	33.4	$	644.9		$	478.2	$	33.0	$	21.3	$	46.3	$	578.8
Other Americas		328.8		12.6		9.7		1.6		352.7			332.0		10.9		4.0		3.4		350.3
		853.8		58.7		50.1		35.0		997.6			810.2		43.9		25.3		49.7		929.1
Southern Europe:
France		1,220.0		79.6		12.7		4.7		1,317.0			1,119.8		72.4		9.8		3.3		1,205.3
Italy		432.4		8.7		11.0		4.3		456.4			335.1		7.0		6.0		3.1		351.2
Other Southern Europe		501.8		90.6		14.0		2.8		609.2			456.8		87.0		8.7		3.4		555.9
		2,154.2		178.9		37.7		11.8		2,382.6			1,911.7		166.4		24.5		9.8		2,112.4
Northern Europe		1,049.3		62.4		37.0		17.9		1,166.6			845.7		63.2		22.2		16.6		947.7
APME		461.2		103.7		36.0		10.3		611.2			469.3		86.0		30.0		10.3		595.6
		4,518.5		403.7		160.8		75.0		5,158.0			4,036.9		359.5		102.0		86.4		4,584.8
Intercompany Eliminations										(17.4	)										—
Total									$	5,140.6										$	4,584.8
	Nine Months Ended September 30,
	2021											2020
	Staffing and Interim		Outcome- Based Solutions and Consulting		Permanent Recruitment		Other		Total			Staffing and Interim		Outcome- Based Solutions and Consulting		Permanent Recruitment		Other		Total
Americas:
United States	$	1,562.1	$	108.4	$	100.8	$	111.2	$	1,882.5		$	1,425.9	$	93.6	$	62.1	$	124.0	$	1,705.6
Other Americas		1,097.5		33.5		23.7		7.6		1,162.3			1,018.7		30.6		12.6		9.2		1,071.1
		2,659.6		141.9		124.5		118.8		3,044.8			2,444.6		124.2		74.7		133.2		2,776.7
Southern Europe:
France		3,545.1		249.7		40.5		17.4		3,852.7			2,781.5		213.0		29.7		10.9		3,035.1
Italy		1,257.3		24.6		32.5		13.9		1,328.3			897.2		20.7		19.0		10.5		947.4
Other Southern Europe		1,458.2		277.5		38.9		9.7		1,784.3			1,253.3		252.6		30.1		9.4		1,545.4
		6,260.6		551.8		111.9		41.0		6,965.3			4,932.0		486.3		78.8		30.8		5,527.9
Northern Europe		3,135.7		193.8		102.6		58.8		3,490.9			2,563.6		198.5		73.1		46.7		2,881.9
APME		1,407.5		304.2		113.2		33.6		1,858.5			1,386.5		250.9		95.1		27.1		1,759.6
		13,463.4		1,191.7		452.2		252.2		15,359.5			11,326.7		1,059.9		321.7		237.8		12,946.1
Intercompany Eliminations										(17.4	)										—
Total									$	15,342.1										$	12,946.1

In the following table, revenue is disaggregated by timing of revenue recognition for each of our reportable segments:

	Three Months Ended September 30,
	2021							2020
	Services transferred over time		Services transferred at a point in time		Total			Services transferred over time		Services transferred at a point in time		Total
Americas:
United States	$	623.2	$	21.7	$	644.9		$	567.6	$	11.2	$	578.8
Other Americas		346.6		6.1		352.7			347.6		2.7		350.3
		969.8		27.8		997.6			915.2		13.9		929.1
Southern Europe:
France		1,305.5		11.5		1,317.0			1,196.4		8.9		1,205.3
Italy		446.3		10.1		456.4			345.6		5.6		351.2
Other Southern Europe		598.0		11.2		609.2			548.6		7.3		555.9
		2,349.8		32.8		2,382.6			2,090.6		21.8		2,112.4
Northern Europe		1,135.1		31.5		1,166.6			928.3		19.4		947.7
APME		590.5		20.7		611.2			579.1		16.5		595.6
		5,045.2		112.8		5,158.0			4,513.2		71.6		4,584.8
Intercompany Eliminations						(17.4	)						—
Total					$	5,140.6						$	4,584.8
	Nine Months Ended September 30,
	2021							2020
	Services transferred over time		Services transferred at a point in time		Total			Services transferred over time		Services transferred at a point in time		Total
Americas:
United States	$	1,829.6	$	52.9	$	1,882.5		$	1,673.0	$	32.6	$	1,705.6
Other Americas		1,147.2		15.1		1,162.3			1,062.9		8.2		1,071.1
		2,976.8		68.0		3,044.8			2,735.9		40.8		2,776.7
Southern Europe:
France		3,815.5		37.2		3,852.7			3,008.0		27.1		3,035.1
Italy		1,297.9		30.4		1,328.3			929.7		17.7		947.4
Other Southern Europe		1,752.5		31.8		1,784.3			1,520.1		25.3		1,545.4
		6,865.9		99.4		6,965.3			5,457.8		70.1		5,527.9
Northern Europe		3,402.0		88.9		3,490.9			2,818.3		63.6		2,881.9
APME		1,796.7		61.8		1,858.5			1,707.9		51.7		1,759.6
		15,041.4		318.1		15,359.5			12,719.9		226.2		12,946.1
Intercompany Eliminations						(17.4	)						—
Total					$	15,342.1						$	12,946.1