Revenue (Tables)

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following tables disaggregate revenue by reportable segment and service line (in millions):

		Three Months Ended March 31, 2022
	Revenue recognition timing	Americas		EMEA		APAC		Total
Property, facilities and project management	Over time	$	1,122.7	$	114.8	$	222.7	$	1,460.2
Leasing	At a point in time	372.9		49.7		37.2		459.8
Capital markets	At a point in time	242.1		28.9		18.8		289.8
Valuation and other	At a point in time or over time	47.6		44.3		29.3		121.2
Total revenue		$	1,785.3	$	237.7	$	308.0	$	2,331.0

		Three Months Ended March 31, 2021
	Revenue recognition timing	Americas		EMEA		APAC		Total
Property, facilities and project management	Over time	$	1,030.9	$	114.0	$	205.3	$	1,350.2
Leasing	At a point in time	222.8		42.6		29.4		294.8
Capital markets	At a point in time	133.8		22.3		10.7		166.8
Valuation and other	At a point in time or over time	37.4		45.0		29.6		112.0
Total revenue		$	1,424.9	$	223.9	$	275.0	$	1,923.8