Goodwill and Other Intangible Assets

3 Months Ended

Mar. 31, 2021

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

Note 12—Goodwill and Other Intangible Assets

The changes in the carrying amount of goodwill by segment were as follows:

	Interconnect		Cable
	Products and		Products and
	Assemblies		Solutions		Total
Goodwill at December 31, 2020	$	4,874.5	$	157.6	$	5,032.1
Acquisition-related		96.5		11.6		108.1
Foreign currency translation		(47.2)		—		(47.2)
Goodwill at March 31, 2021	$	4,923.8	$	169.2	$	5,093.0

Other than goodwill noted above, the Company’s intangible assets as of March 31, 2021 and December 31, 2020 were as follows:

		March 31, 2021						December 31, 2020
	Weighted	Gross				Net		Gross				Net
	Average	Carrying		Accumulated		Carrying		Carrying		Accumulated		Carrying
	Life (years)	Amount		Amortization		Amount		Amount		Amortization		Amount
Customer relationships	9	$	479.9	$	321.1	$	158.8	$	456.6	$	313.6	$	143.0
Proprietary technology	11		156.0		90.9		65.1		156.2		88.1		68.1
Backlog and other	2		49.7		49.4		0.3		49.7		49.4		0.3
Total intangible assets (definite-lived)	9		685.6		461.4		224.2		662.5		451.1		211.4
Trade names (indefinite-lived)			186.1				186.1		186.1				186.1
		$	871.7	$	461.4	$	410.3	$	848.6	$	451.1	$	397.5

The increase in the gross carrying amount of intangible assets in the first quarter of 2021 was driven by certain customer relationships recognized as a result of the acquisition accounting associated with our first quarter 2021 acquisitions. Amortization expense for the three months ended March 31, 2021 and 2020 was approximately $12.3 and

$12.9, respectively. As of March 31, 2021, amortization expense relating to the Company’s current intangible assets estimated for the remainder of 2021 is approximately $37.0 and for each of the next five fiscal years is approximately $42.0 in 2022, $39.3 in 2023, $33.6 in 2024, $24.2 in 2025 and $23.1 in 2026.