Balance Sheet Information and Other Supplemental Disclosures - Narrative (Details) - USD ($) $ in Millions	Sep. 29, 2023	Dec. 31, 2022
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Net assets for overfunded plans	$ 12.8
Accrued pension liability	67.6	$ 53.8
Current portion accrued pension liability	$ 1.3	$ 0.4
Operating lease weighted average remaining lease term	11 years
Finance lease weighted average remaining lease term	18 years 4 months 24 days
Operating lease weighted average discount rate percent	4.80%
Finance lease weighted average discount rate percent	6.20%
GT Advanced Technologies Inc
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Restricted cash	$ 5.8