Income Taxes - Summary of Income Tax Examinations (Details)	12 Months Ended
	Jan. 01, 2021
SWITZERLAND
Income Taxes [Line Items]
Income Tax Examination, Year under Examination	2019
Minimum | US Federal
Income Taxes [Line Items]
Income Tax Examination, Year under Examination	2017
Minimum | California
Income Taxes [Line Items]
Income Tax Examination, Year under Examination	2016
Minimum | JAPAN
Income Taxes [Line Items]
Income Tax Examination, Year under Examination	2018
Maximum | US Federal
Income Taxes [Line Items]
Income Tax Examination, Year under Examination	2019
Maximum | California
Income Taxes [Line Items]
Income Tax Examination, Year under Examination	2019
Maximum | JAPAN
Income Taxes [Line Items]
Income Tax Examination, Year under Examination	2019