Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 27, 2019

Accounting Policies [Abstract]

Schedule of Useful Lives for Property, Plant and Equipment

Property, Plant and Equipment

Property, plant and equipment is stated at cost. Major renewals and improvements are capitalized, while routine maintenance and repairs are expensed as incurred. Depreciation for property, plant and equipment, other than land and construction in process, is generally based upon the following estimated useful lives, using the straight-line method:

Buildings	10	to	45 years
Leasehold improvements	1	to	20 years
Capitalized software	1	to	10 years
Machinery and equipment	1	to	20 years

 The Company capitalizes certain computer software and development costs incurred in connection with developing or obtaining software for internal use.

Upon retirement or other disposal of property, plant and equipment, the cost and related amount of accumulated depreciation are eliminated from the asset and accumulated depreciation accounts, respectively. The difference, if any, between the net asset value and the proceeds is included in net income.

The Company assesses the recoverability of assets or asset groups using undiscounted cash flows whenever events or circumstances indicate that the carrying value of an asset or asset group may not be recoverable. If an asset or asset group is found to be impaired, the amount recognized for impairment is equal to the difference between the carrying value of the asset or asset group and its fair value.

Schedule of Useful Lives for Finite Lived Intangible Assets

The estimated useful lives of the Company's intangible assets as of December 27, 2019 were the following:

Completed technology	8	to	25 years
License agreements			30 years
Trademarks	22	to	30 years

Shipping and Handling Cost

Shipping costs included in SG&A expenses in continuing operations were as follows:

	Fiscal Year
	2019		2018		2017
Shipping costs	$	17.6	$	12.8	$	13.9