Restructuring Actions - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Apr. 01, 2018	Dec. 30, 2018
Restructuring Charges [Abstract]
Pre-tax restructuring charges relating to severance and other employee costs	$ 0	$ 17,349
Severance expense recorded, fourth quarter			$ 72,000

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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