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Pre-Production Costs Related to Long-Term Supply Agreements (Tables)
3 Months Ended
Apr. 03, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Classification of Recoverable Customer E&D and Tooling Costs Related to Long-Term Supply Agreements
The classification of recoverable customer E&D and tooling costs related to long-term supply agreements is shown below (in millions):
April 3,
2021
December 31,
2020
Current$225.0 $212.0 
Long-term126.8 121.4 
Recoverable customer E&D and tooling$351.8 $333.4