Income Taxes Income Before Income taxes (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Jan. 03, 2021	[1]	Oct. 04, 2020	Jul. 05, 2020	Apr. 05, 2020	Dec. 29, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Income Tax Contingency [Line Items]
U.S.										$ 183,452	$ 29,252	$ 32,627
Non-U.S.										722,912	207,890	225,056
Income from continuing operations before income taxes	$ 473,091		$ 233,757	$ 164,827	$ 34,689	$ 65,296	$ 63,254	$ 71,827	$ 36,765	$ 906,364	$ 237,142	$ 257,683

[1] The fourth quarter of fiscal year 2020 includes a pre-tax loss of $25.4 million as a result of the mark-to-market adjustment on postretirement benefit plans. The fourth quarter of fiscal year 2019 includes a pre-tax loss of $31.2 million as a result of the mark-to-market adjustment on postretirement benefit plans. See Note 1 for a discussion of this accounting policy