Intangible Assets and Goodwill (Tables)

6 Months Ended

Jun. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets

Intangible assets, net of accumulated amortization, impairment charges and adjustments are summarized as follows:

		As of June 30, 2021						As of December 31, 2020
(In millions)	Estimated Life	Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
Completed technology	4-28 years	$	7,394.3	$	(5,252.7)	$	2,141.6	$	7,394.3	$	(5,136.5)	$	2,257.8
In-process research and development	Indefinite until commercialization	179.4		—		179.4		762.5		—		762.5
Trademarks and trade names	Indefinite	64.0		—		64.0		64.0		—		64.0
Total intangible assets		$	7,637.7	$	(5,252.7)	$	2,385.0	$	8,220.8	$	(5,136.5)	$	3,084.3

Estimated future amortization for acquired intangible assets

The estimated future amortization of finite-lived intangible assets for the next five years is expected to be as follows:

(In millions)	As of June 30, 2021
2021 (remaining six months)	$	110.0
2022	215.0
2023	215.0
2024	225.0
2025	220.0
2026	200.0

Summary of roll forward of the changes in goodwill

The following table provides a roll forward of the changes in our goodwill balance:

(In millions)	As of June 30, 2021
Goodwill, December 31, 2020	$	5,762.1
Other	1.8
Goodwill, June 30, 2021	$	5,763.9