(6) GOODWILL AND OTHER INTANGIBLES

The change in the carrying value of goodwill by segment follows:


					Europe,
					Middle East &
	Americas		Asia Pacific		Africa		Total
Balance, December 31, 2017	$	356.4	$	53.1	$	186.6	$	596.1
Foreign currency translation		1.9		(2.5)		(10.5)		(11.1)
Measurement period adjustments (1)		9.0		0.3		3.0		12.3
Acquisitions (1)		29.2		—		7.5		36.7
Balance, December 31, 2018	$	396.5	$	50.9	$	186.6	$	634.0
Foreign currency translation and other		(25.0)		(0.6)		(2.6)		(28.2)
Balance, December 31, 2019	$	371.5	$	50.3	$	184.0	$	605.8

(1)

Represents measurement period adjustments related to the Geist and Energy Labs acquisitions. See note 2 for additional information.

The gross carrying amount and accumulated amortization of identifiable intangible assets by major class follow:


			Accumulated
As of December 31, 2019	Gross		Amortization		Net
Customer relationships	$	1,099.2	$	(268.2)	$	831.0
Developed Technology		328.2		(105.4)		222.8
Capitalized software		103.3		(35.8)		67.5
Trademarks		38.6		(12.4)		26.2
Favorable operating leases		2.1		(2.1)		—
Total finite-lived identifiable intangible assets	$	1,571.4	$	(423.9)	$	1,147.5
Indefinite-lived Trademarks		294.1		—		294.1
Total Intangible Assets	$	1,865.5	$	(423.9)	$	1,441.6


			Accumulated
As of December 31, 2018	Gross		Amortization		Net
Customer relationships	$	1,102.0	$	(180.4)	$	921.6
Developed Technology		326.2		(70.5)		255.7
Capitalized software		81.6		(17.9)		63.7
Trademarks		38.6		(7.7)		30.9
Favorable operating leases		2.1		(1.8)		0.3
Backlog		139.2		(139.2)		—
Total finite-lived identifiable intangible assets	$	1,689.7	$	(417.5)	$	1,272.2
Indefinite-lived Trademarks		292.0		—		292.0
Total Intangible Assets	$	1,981.7	$	(417.5)	$	1,564.2

Total intangible asset amortization expense for the years ended December 31, 2019, 2018 and 2017, was $145.8, $156.6, $224.8, respectively. Based on intangible asset balances as of December 31, 2019, expected amortization expense is $145.2 in 2020, $145.9 in 2021, $137.9 in 2022, $133.2 in 2023, $133.0 in 2024.