Revenue (Tables)

6 Months Ended

Jun. 30, 2023

The following tables present revenue disaggregated by revenue source and pattern of revenue recognition (in millions):


	Three Months Ended June 30,
	2023						2022
	Over Time		Point In Time		Total Revenues		Over Time		Point In Time		Total Revenues
Time and materials contracts	$	170.6	$	—	$	170.6	$	170.6	$	—	$	170.6
Fixed fee percent complete contracts	16.2		—		16.2		13.5		—		13.5
Fixed fee contracts	39.7		—		39.7		33.1		—		33.1
Reimbursable expenses	2.1		—		2.1		2.4		—		2.4
Total professional services fees	228.6		—		228.6		219.6		—		219.6
Other services revenue*	1.5		0.6		2.1		2.0		0.7		2.7
Total services	230.1		0.6		230.7		221.6		0.7		222.3
Software and hardware	—		0.4		0.4		—		0.4		0.4
Total revenues	$	230.1	$	1.0	$	231.1	$	221.6	$	1.1	$	222.7

*Other services revenue primarily consists of hosting fees, maintenance, training, internally developed SaaS revenue and partner referral fees.


	Six Months Ended June 30,
	2023						2022
	Over Time		Point In Time		Total Revenues		Over Time		Point In Time		Total Revenues
Time and materials contracts	$	346.1	$	—	$	346.1	$	342.2	$	—	$	342.2
Fixed fee percent complete contracts	31.0		—		31.0		27.9		—		27.9
Fixed fee contracts	76.0		—		76.0		64.3		—		64.3
Reimbursable expenses	4.6		—		4.6		4.4		—		4.4
Total professional services fees	457.7		—		457.7		438.8		—		438.8
Other services revenue*	2.9		1.0		3.9		3.9		1.0		4.9
Total services	460.6		1.0		461.6		442.7		1.0		443.7
Software and hardware	—		0.9		0.9		—		1.1		1.1
Total revenues	$	460.6	$	1.9	$	462.5	$	442.7	$	2.1	$	444.8

*Other services revenue primarily consists of hosting fees, maintenance, training, internally developed SaaS revenue and partner referral fees.

The following table presents revenue disaggregated by geographic area, as determined by the billing address of customers (in millions):