Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 27, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

The gross carrying amount and accumulated amortization of intangible assets were comprised of the following at the end of each period:

	December 27, 2019				December 28, 2018
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortizable:
Completed technology	$	10,456.9	$	3,822.8	$	10,467.9	$	2,980.6
License agreements	120.1		74.1		120.1		70.1
Trademarks	77.7		20.1		81.9		18.1
Customer relationships	—		—		27.5		14.1
Total	$	10,654.7	$	3,917.0	$	10,697.4	$	3,082.9
Non-Amortizable:
Trademarks	$	35.0			$	35.0
In-process research and development	245.3				633.3
Total	$	280.3			$	668.3

Finite-lived Intangible Assets Amortization Expense

Finite-lived intangible asset amortization expense within continuing operations is as follows:

	Fiscal Year
	2019		2018		2017
Amortization expense	$	853.4	$	740.2	$	694.5

Schedule of Future Amortization Expense, Intangible Assets

The estimated aggregate amortization expense on intangible assets owned by the Company is expected to be as follows:

Fiscal 2020	$	754.2
Fiscal 2021	657.6
Fiscal 2022	585.1
Fiscal 2023	581.1
Fiscal 2024	581.1